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Cercospora Leaf Spot in Sugarbeet

Sugarbeets    All Locations

Cercospor Leaf Spot

Posted on: July 12, 2024 by Oliver Never

Sugarbeets - Treasure Valley, Western Magic Valley

University of Idaho and Amalgamated Sugar Company personnel have identified Cercospora leaf spot in fields near Parma ID, Wilder ID, and Glenns Ferry ID.  Incidence is still low, however, most fields have closed rows, Cercospora spores have been detected in spore traps deployed in the Treasure Valley, and environmental conditions have been conducive for infection for a couple of weeks now. 

If fungicide applications have not yet occurred, we strongly encourage everyone to start spraying against Cercospora leaf spot. 

Several fungicides are available but be aware of multiple fungicide-resistant strains of Cercospora. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14 days. Using a protectant such as copper products, EBDCs, or hydrogen peroxide with every spray is strongly recommended.[https://www.srcoop.com/articles/2024_Fungicide_Recommendations.pdf ] 

Contact your crop consultant from the Amalgamated Sugar Company to discuss suitable fungicides for your area, to report a loss of fungicide efficacy, or if you have any questions.


Click on the link below for the Cercospora leaf spot pages in the PNW Plant Disease Management Handbooks.

https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-cercospora-leaf-spot

Cercospora Leaf Spot in Sugarbeet - 2024

Sugarbeets    Treasure Valley, Treasure Valley - Idaho, Magic Valley

Cercospora Leaf Spot

Posted on: July 7, 2024 by Oliver Neher

Sugarbeets- Treasure Valley, Western Magic Valley

University of Idaho and Amalgamated Sugar Company personnel have identified Cercospora leaf spot in fields near Parma ID, Wilder ID, and Glenns Ferry ID. Incidence is stilllow, however, most fields have closed rows, Cercospora spores have been detected in spore traps deployed in the Treasure Valley, and environmental conditions have been conducive for infection for a couple of weeks now

In case fungicide applications have not yet occurred, we are strongly encouraging everyone to start spraying against Cercospora leaf spot. There are several fungicides available [https://www.srcoop.com/articles/2024_Fungicide_Recommendations.pdf ] but be aware of multiple fungicide resistant strains of Cercospora. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14 days. The use of a protectant such as copper products, EBDCs, or hydrogen peroxide with every spray is strongly recommended.

Contact your crop consultant from the Amalgamated Sugar Company to discuss suitable fungicides for your areato report a loss of fungicide efficacy, or if you have any questions.

 

Click on the link below for the Cercospora leaf spot pages in the PNW Plant Disease Management Handbooks.

https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-cercospora-leaf-spot

Powdery Mildew and Cercospora in Sugarbeets

Sugarbeets    All Locations

powdery mildew and cercospora

Posted on: June 30, 2022 by Jerry Neufeld

Powdery mildew and Cercospora leaf spot have been found by Amalgamated Sugar Company Crop Consultants in sugarbeet fields in the western Treasure Valley.  There are several fungicides available for use to treat these diseases. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14-21 days. Please be advised that strobilurins could show reduced efficacy due to fungicide resistance in powdery mildew. Always tankmix with at least 5 lbs of sulfur for resistance management purposes when treating against powdery mildew. For the same reason, use a copper product as tank mix partner when treating against Cercospora. DO NOT MIX COPPER AND GLYPHOSATE. Contact your Crop Consultant from The Amalgamated Sugar Company LLC if you have any questions.

Click on the links below for the powdery mildew and cercospora pages in the PNW Plant Disease Management Handbooks.


Sugarbeet Root Maggot - 2022

Sugarbeets    Treasure Valley, Treasure Valley - Idaho, Eastern Idaho, Magic Valley

sugarbeet root maggot

Posted on: May 10, 2022 by Jerry Neufeld

The growing degree day calculator (gdd) (hosted by the Integrated Plant Protection Center at Oregon State University; http://uspest.org/cgi-bin/ddmodel.us) for the sugarbeet root maggot fly shows that—depending on your location in the Treasure Valley—we have accumulated 330 gdd since March 1, 2022 and 258 gdd in the Magic Valley. Peak flight of root maggot flies should occur after 360 accumulated gdd when the maximum high temperature exceeds 80 degrees F. In the Treasure Valley this will be about May 15, in the Magic Valley this will be about May 22.  This is a few days later than last year in both locations.  The gdd model does an excellent job of predicting peak flight, but monitoring with orange sticky stake traps is the best way to get local information on fly numbers for a given field to determine if you have the threshold numbers of flies.  The link below will take you to the Sugarbeet Root Maggot Fly Monitoring readings for the Mini-Cassia and Upper Snake growing areas.

Root maggot flies will lay eggs near sugarbeet plants. After the larvae hatch they will begin feeding on the young sugarbeets. Look for these pests to appear in the western end of the Treasure Valley first.  The optimal timing for applying granular insecticides against root maggots is within 10 days of peak flight.  Granular insecticides must be watered in well to get good uptake by the sugarbeets.  The link below from the 2022 PNW Insect Management handbook contains additional information about the sugarbeet root maggot control. I have also attached a link to the University of Idaho publication entitled “Sugarbeet Root Maggot; Identification, Biology and Management.”  Amalgamated Sugar Company would like you to visit with your field consultant for treatment options.


As a reminder, all food uses of Lorsban/chlorpyrifos were cancelled, and tolerances revoked, by the U.S. EPA on February 28, 2022.  There is not an "existing stocks" provision, so you cannot use any leftover Lorsban/chlorpyrifos you have on hand.  No uses of any type are allowed on any food or feed crop.


Powdery Mildew in Sugarbeets - 2021

Sugarbeets    All Locations

Powdery Mildew

Posted on: July 2, 2021 by Jerry Neufeld

Powdery mildew has been found by
The Amalgamated Sugar Company
LLC Crop Consultants in sugarbeet fields in the Nyssa, OR area near the
Snake River.  There are several
fungicides available for use to treat powdery mildew. Depending on the disease
pressure and chemistry used, applications with different chemistries should be
repeated every 14-21 days.
Please be advised that strobilurins could show reduced efficacy due to fungicide
resistance. Always tankmix with at least 5 lbs of sulfur for resistance
management purposes. Contact your Crop Consultant from The
Amalgamated Sugar Company
LLC if you have any
questions.



Click on
the link below for the powdery mildew pages in the PNW Plant Disease Management
Handbooks.

Sugarbeet Root Maggot - 2021

Sugarbeets    All Locations

sugarbeet root maggot

Posted on: May 19, 2021 by Jerry Neufeld

The growing degree day calculator (gdd) (hosted by the
Integrated Plant Protection Center at Oregon State University;
http://uspest.org/cgi-bin/ddmodel.us)
for the sugarbeet root maggot fly shows that—depending on your location in the
Treasure Valley— the peak flight of root maggot flies began a few days
ago.  The gdd model does an excellent job
of predicting peak flight, but monitoring with orange sticky stake traps is the
best way to get local information on fly numbers for a given field to determine
if you have the threshold numbers of flies.



Root maggot flies will lay eggs near sugarbeet plants. After
the larvae hatch they will begin feeding on the young sugarbeets. Look for
these pests to appear in the western end of the Treasure Valley first.  The optimal timing for applying granular
insecticides against root maggots is within 10 days of peak flight.  Granular insecticides must be watered in well
to get good uptake by the sugarbeets.  The
Amalgamated Sugar Company field consultants are reporting that root maggot fly pressure
appears to be light at the moment in the Treasure Valley, but there are some
elevated levels of root maggot flies in eastern Idaho .  If you suspect you are having issues with these
pests contact your TASCO field consultant. 
Click on the links below for control information from the PNW Insect
Control Handbook and the TASCO “Fly Monitoring Readings”.

Black Bean Aphid -2020

Sugarbeets    Magic Valley

Black Bean Aphid

Posted on: July 31, 2020 by Jerry Neufeld

The Amalgamated Sugar Company field consultants are reporting that Black Bean Aphids have been found in sugarbeet fields near Hazelton, ID. Insecticides for Black Bean Aphid and Fungicides for Powdery Mildew can be tank mixed; however, TASCO has some concerns about the amount of water carrier used when these products are applied by air. TASCO asks that you contact your crop consultant if you have any application questions. Click on the link below for more information about Black Bean Aphid in the Pacific Northwest Insect Management Handbook.

Powdery Mildew, Cercospora Leaf Spot and Spider Mites near Twin Falls

Sugarbeets    Magic Valley

Powdery Mildew, Cercospora Leaf Spot and Spider Mites

Posted on: July 22, 2020 by Jerry Neufeld

Powdery mildew and spider mites have been found by The Amalgamated Sugar Company LLC Crop Consultants in sugarbeet fields in the Twin Falls, ID area. There are several fungicides available for use to treat powdery mildew. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14-21 days. Please be advised that strobilurins could show reduced efficacy due to fungicide resistance. Always tankmix with at least 5 lbs of sulfur for resistance management purposes.

TASCO is also reporting they have confirmed Cercospora leaf spot in a sugarbeet field near Twin Falls. We have reached critical temperatures but relative humidity is still low, however overhead irrigation can artificially increase relative humidity and therefore increase infection potential. Fields in close proximity to last year’s infected fields, or back to back sugarbeet fields are especially at risk. Please contact your local AMSCO agriculturist for fungicide recommendations based on last year’s fungicide resistance survey.

Contact your Crop Consultant from The Amalgamated Sugar Company LLC if you have any questions.

TASCO Field Days

Sugarbeets    All Locations

Posted on: July 1, 2020 by Jerry Neufeld

The following announcement is from The Amalgamated Sugar Company.
Due to the raising rate of Covid community transmission, we see ourselves forced to cancel The Amalgamated Sugar Company Field Days in Nampa (July 7th) and Jerome (July 9th).

We apologize for the short notice and ask for your understanding.

Powdery Mildew in Sugarbeets - 2020

Sugarbeets    All Locations

Powdery Mildew

Posted on: June 23, 2020 by Jerry Neufeld

Powdery mildew has been found by The Amalgamated Sugar Company LLC Crop Consultants in sugarbeet fields in the Nyssa, OR and Parma, ID area. This is quite a bit earlier than the past few years. There are several fungicides available for use to treat powdery mildew. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14-21 days. Please be advised that strobilurins could show reduced efficacy to due fungicide resistance. Always tankmix with at least 5 lbs of sulfur for resistance management purposes. Contact your Crop Consultant from The Amalgamated Sugar Company LLC if you have any questions.

Click on the link below for the powdery mildew pages in the PNW Plant Disease Management Handbooks.

Cercospora leaf spot in Sugarbeets - 2020

Sugarbeets    All Locations

Cercospora leaf spot

Posted on: June 15, 2020 by Jerry Neufeld

Amalgamated Sugar Company, LLC is reporting they have the first confirmed sighting of Cercospora leaf spot for 2020 in a sugarbeet field between Caldwell and Notus. A Senior Agriculturist with AMSCO found symptomatic leaves in an overhead irrigated field. We have reached critical temperatures but relative humidity is still low, however overhead irrigation can artificially increase relative humidity and therefore increase infection potential. Fields in close proximity to last year’s infected fields, or back to back sugarbeet fields are especially at risk. Please contact your local AMSCO agriculturist for fungicide recommendations based on last year’s fungicide resistance survey.

Powdery Mildew in Sugarbeets - 2019 - Twin Falls District

Sugarbeets    All Locations

Powdery Mildew

Posted on: July 23, 2019 by Jerry Neufeld

Powdery mildew has been found by The Amalgamated Sugar Company Crop Consultants in sugarbeet fields in the Twin Falls District. There are several fungicides available for use to treat powdery mildew. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14-21 days. Contact your crop consultant from the Amalgamated Sugar Company if you have any questions.

Click on the link below for the powdery mildew pages in the PNW Plant Disease Management Handbooks.

Black Bean Aphid -2019

Sugarbeets    All Locations

Black Bean Aphid

Posted on: July 17, 2019 by Jerry Neufeld

The Amalgamated Sugar Company personnel are reporting that Black Bean Aphids have been found in sugarbeet fields in the Magic Valley. Insecticides for Black Bean Aphid and Fungicides for Powdery Mildew can be tank mixed; however, TASCO has some concerns about the amount of water carrier used when these products are applied by air. TASCO asks that you contact your crop consultant if you have any application questions. Click on the link below for more information about Black Bean Aphid in the Pacific Northwest Insect Management Handbook.

Cercospora leaf spot in Sugarbeets - 2019

Sugarbeets    All Locations

Cercospora leaf spot

Posted on: June 28, 2019 by Jerry Neufeld

Cercospora leaf spot has been found by The Amalgamated Sugar Company in fields near eastern Oregon, Treasure Valley, western Magic Valley. Incidence is low and likely does not warrant treatment yet. However, when inoculum is present, infection will progress with warmer temperatures and increased irrigation and relative humidity. There are several fungicides available for use to treat Cercospora leaf spot, but be aware of multiple fungicide resistant strains of Cercospora. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14-21 days.

Contact your crop consultant from the Amalgamated Sugar Company to discuss suitable fungicides for your area, to report a loss of fungicide efficacy, or if you have any questions.

Click on the link below for the Cercospora leaf spot pages in the PNW Plant Disease Management Handbooks.

Powdery Mildew in Sugarbeets - 2019

Sugarbeets    All Locations

Powdery Mildew

Posted on: June 27, 2019 by Jerry Neufeld

Powdery mildew has been found by The Amalgamated Sugar Company Crop Consultants in fields near Adrian, Oregon and western Idaho. There are several fungicides available for use to treat powdery mildew. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14-21 days. Contact your crop consultant from the Amalgamated Sugar Company if you have any questions.

Click on the link below for the powdery mildew pages in the PNW Plant Disease Management Handbooks.

sugarbeet leafminer and armyworm

Sugarbeets    Treasure Valley

leafminer and armyworm

Posted on: May 31, 2019 by Jerry Neufeld

The Amalgamated Sugar Company crop consultants are reporting that pockets of leaf miner and army worm are starting to pop up around various locations in Treasure Valley sugarbeet fields. The links below from the Pacific Northwest Insect Management Handbook describe the damage and also show the damage these pests cause. Please contact your Amalgamated Sugar crop consultant for more details and treatment options.

sugarbeet root maggot, 2019

Sugarbeets    All Locations

Posted on: April 29, 2019 by Jerry Neufeld

The growing degree day calculator (gdd) (hosted by the Integrated Plant Protection Center at Oregon State University; http://uspest.org/cgi-bin/ddmodel.us) for the sugarbeet root maggot fly shows that—depending on your location in the Treasure Valley—we have accumulated 295 gdd since January 1, 2019 and 263 gdd in the Magic Valley. Peak flight of root maggot flies should occur after 360 accumulated gdd when the maximum high temperature exceeds 80 degrees F. In the Treasure Valley this will be about May 7, in the Magic Valley this will be about May 12. The gdd model does an excellent job of predicting peak flight, but monitoring with orange sticky stake traps is the best way to get local information on fly numbers for a given field to determine if you have the threshold numbers of flies.
Root maggot flies will lay eggs near sugarbeet plants. After the larvae hatch they will begin feeding on the young sugarbeets. Look for these pests to appear in the western end of the Treasure Valley first. The optimal timing for applying granular insecticides against root maggots is within 10 days of peak flight. Granular insecticides must be watered in well to get good uptake by the sugarbeets. The link below from the 2019 PNW Insect Management handbook contains additional information about the sugarbeet root maggot. Visit with your field consultant from TASCO for treatment options.

cutworms in sugarbeets in Jamieson, Oregon area

Sugarbeets    Treasure Valley

cutworms

Posted on: April 25, 2019 by Jerry Neufeld

Amalgamated Sugar Company Field Consultant, Aaron Searle is reporting that cutworms and wireworms have been found in sugarbeet fields near Jamieson, Oregon. There are several species of cutworms that attack sugarbeets, but all are nocturnal, so you may see injury but not readily find the insect damaging the sugarbeets. Cutworms are usually worse in fields where there is crop residue, such as following alfalfa or corn. If you see “skips” in the field, dig around in the soil where you would have expected a plant and you will likely find the lower portion of a cut plant. Larvae are often found less than an inch below the soil surface near a damaged plant. Contact your TASCO Field Consultant for treatment options. Below is the link to the PNW Insect Management Handbook for cutworms in sugarbeets.

Cercospora Leaf Spot and Black Bean Aphid- 2018

Sugarbeets    Treasure Valley

cercospora leaf spot and black bean aphid

Posted on: July 6, 2018 by Jerry Neufeld

Amalgamated Sugar Company field consultants are advising sugarbeet growers to scout their fields for Cercospora Leaf Spot and Black Bean Aphids. Conditions are ideal for these pests right now. Both of these pests are currently being found in many sugarbeet fields in the Middleton, Notus and Parma areas. The fungicides and insecticides used on these pests can commonly be tank mixed; however; AMSCO would like you to contact your field representative for specific recommendations. The links below will take you to the Pacific Northwest Handbooks where you can see the chemicals used on these pests, and also see images of them.

Loopers in Sugarbeets - 2018

Sugarbeets    Treasure Valley

loopers

Posted on: June 25, 2018 by Jerry Neufeld

Amalgamated Sugar Company is reporting that loopers have been found in sugarbeet fields in the Caldwell area. These pests will defoliate leaves, leaving only the leaf veins and petioles if left untreated. The link below will take you to the PNW Insect Management Handbook for control measures. If you have any questions, contact your Crop Consultant from Amalgamated Sugar Company for more information.

Cercospora Leaf Spot - 2018

Sugarbeets    All Locations

cercospora leaf spot

Posted on: June 25, 2018 by Jerry Neufeld

According to Dr. Oliver Neher, from AMSCO, it is time to scout sugarbeet fields for Cercospora Leaf Spot. Temperatures are increasing, rows are closing and irrigation is intense right now. In the next couple of days we could see the average night time temperatures reaching 60 F and with ongoing irrigation we are creating favorable conditions for CLS. Favorable conditions for CLS are when the average night time temperature is above 60 degrees Fahrenheit with 90 percent relative humidity or above for 5 hours or more. Start treating when there are 5 spots average on 50-100 leaves.

Initially focus your scouting on areas with persistent leaf wetness (overlapping handlines and pivots, or areas with increased soil moisture) and known CLS problem areas or close to previous CLS fields. With the increase of fungicide resistance it is very important to use proper chemistry rotation and the addition of a copper product. However, remember copper and glyphosate don’t mix. It is best to consult your Field Consultant from AMSCO before making any treatments.

powdery mildew in sugarbeets - 2018

Sugarbeets    All Locations

powdery mildew

Posted on: June 24, 2018 by Jerry Neufeld

Powdery mildew has been found by a Simplot Crop Consultant and confirmed by The Amalgamated Sugar Company Staff in fields near Adrian, Oregon and Parma, Idaho. There are several fungicides available for use to treat powdery mildew. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 14-21 days. Contact your crop consultant from the Amalgamated Sugar Company if you have any questions.

Click on the link below for the powdery mildew pages in the PNW Plant Disease Management Handbooks.

sugarbeet root maggot, 2018

Sugarbeets    Treasure Valley

sugarbeet root maggot

Posted on: May 7, 2018 by Jerry Neufeld

The degree day calculator (hosted by the Integrated Plant Protection Center at Oregon State University; http://uspest.org/cgi-bin/ddmodel.us) for the sugar beet root maggot fly shows that—depending on your location in the Treasure Valley—we have accumulated 360 growing degree days since January 1, 2018. Peak flight of root maggot flies should occur after 360 accumulated growing degree days when the maximum high temperature exceeds 80 degrees F. In the Treasure Valley this should be this week.

Root maggot flies will lay eggs near sugarbeet plants. After the larvae hatch they will begin feeding on the young sugarbeets. Look for these pests to appear in the western end of the Treasure Valley first. If you haven’t applied a treatment for sugarbeet root maggot, now is the time to do so. The link below from the 2018 PNW Insect Management handbook contains additional information. Visit with your field consultant from AMSCO for treatment options.

Powdery Mildew and Spider MItes in Sugarbeets

Sugarbeets    All Locations

powdery mildew and spider mites

Posted on: July 6, 2017 by Jerry Neufeld

Powdery mildew and spider mites have been found by Amalgamated Sugar Company Crop Consultants in the Roswell, Weiser and Adrian, Oregon areas. There are several fungicides available for use to treat powdery mildew. Depending on the disease pressure and chemistry used, applications with different chemistries should be repeated every 7 to 14 days. Contact your crop consultant from the Amalgamated Sugar Company if you have questions about treatment options for these pests.

Click on the links below for the powdery mildew and spider mite pages in the PNW Plant Disease and Insect Management Handbooks.

Armyworms, Loopers and False Celery Leaftier in Sugarbeets

Sugarbeets    Treasure Valley

army worms, loopers, False Celery Leaftier

Posted on: June 29, 2017 by Jerry Neufeld

Kevin Foulger, Crop Consultant with Amalgamated Sugar Company is reporting that loopers, armyworms and False Celery Leaftier have been found in sugarbeet fields on the west end of the Treasure Valley, mostly in the Adrian area. These pests will defoliate leaves, leaving only the leaf veins and petioles if left untreated. The links below will take you to the PNW Insect Management Handbook for control measures. I have also attached a couple of images provided by Kevin. If you have any questions, contact your Crop Consultant from Amalgamated Sugar Company for more information.

Cercospora Leaf Spot and Black Bean Aphid in Sugarbeets

Sugarbeets    All Locations

Cercospora Leaf Spot and Black Bean Aphid

Posted on: August 8, 2016 by Jerry Neufeld

AMSCO Pathologist Dr. Oliver Neher is reporting that Cercospora leaf spot has been confirmed in sugarbeet fields in the Wendell and Rupert areas. The recent weather conditions have been favorable for disease development. According to the 2016 PNW Plant Disease Handbook, “High humidity or free moisture and high temperatures (77°F to 95°F days, nights above 60°F) favor infection”. Many of the currently grown high-yielding sugarbeet varieties are susceptible or moderately susceptible to Cercospora. The 2016 PNW Plant Disease Handbook lists several fungicides that can be applied to treat this disease. Click on the link below for this information. The other link below directs to an extension bulletin published by the North Dakota State University and contains additional information for disease management. Dr. Neher is also reporting that black bean aphid is being found in these areas. You may be able to tank mix insecticides for black bean aphid with fungicides used for Cercospora. Contact your crop consultant from Amalgamated Sugar Company for more information.

Powdery Mildew in Sugarbeets 2016

Sugarbeets    All Locations

powdery mildew

Posted on: July 7, 2016 by Jerry Neufeld

Powdery mildew has been found by Amalgamated Sugar Company Crop Consultants in the Adrian, Oregon area. There are several fungicides available for use to treat powdery mildew. Depending on the disease pressure, applications with different chemistries should be repeated every 14 to 21 days. Contact your crop consultant from the Amalgamated Sugar Company if you have questions about treatment options.

Click on the links below for the powdery mildew page in the PNW Plant Disease handbook.

sugarbeet root maggot, 2017

Sugarbeets    Treasure Valley

sugarbeet root maggot

Posted on: April 26, 2016 by Jerry Neufeld

The degree day calculator (hosted by the Integrated Plant Protection Center at Oregon State University; http://uspest.org/cgi-bin/ddmodel.us) for the sugar beet root maggot fly shows that—depending on your location in the Treasure Valley—we have accumulated nearly 360 growing degree days since January 1, 2017. Peak flight of root maggot flies should occur after 360 accumulated growing degree days when the maximum high temperature exceeds 80 degrees F. In the Treasure Valley this will be very soon.

Root maggot flies will lay eggs near sugarbeet plants. After the larvae hatch they will begin feeding on the young sugarbeets. Look for these pests to appear in the western end of the Treasure Valley first. If you haven’t applied a treatment for sugarbeet root maggot, now is the time to do so. The link below from the 2017 PNW Insect Management handbook contains additional information. Visit with your field consultant from AMSCO for treatment options.

University of Idaho, Snake River Sugarbeet Conference

Sugarbeets    Treasure Valley

Posted on: November 18, 2015 by Jerry Neufeld

Click on the pdf below for more information about the University of Idaho, Snake River Sugarbeet Conference. The conference is being held in Boise on December 9 and in Burley on December 10.

cercospora leaf spot

Sugarbeets    Treasure Valley

cersospora leaf spot

Posted on: June 26, 2015 by Jerry Neufeld

Terry Cane, Crop Consultant with Amalgamated Sugar Company, is reporting that cercospora leaf spot is being found in sugarbeets in the Hammett and Indian Cove area in Elmore County. Contact your crop consultant from Amalgamated Sugar Company for more information.

cercospora leaf spot

Sugarbeets    Treasure Valley

cersospora leaf spot

Posted on: June 26, 2015 by Jerry Neufeld

Terry Cane, Crop Consultant with Amalgamated Sugar Company, is reporting that cercospora leaf spot is being found in sugarbeets in the Hammett and Indian Cove area in Elmore County. Contact your crop consultant from Amalgamated Sugar Company for more information.

sugarbeet root maggot

Sugarbeets    Treasure Valley - Idaho

sugarbeet root maggot

Posted on: May 6, 2015 by Jerry Neufeld

The degree day calculator (hosted by the Integrated Plant Protection Center at Oregon State University) for the sugar beet root maggot fly shows that—depending on your location in the Treasure Valley—we have accumulated 394 degree days since March 1, 2015. Peak flight of root maggot flies should occur after 360 accumulated degree days when the maximum high temperature exceeds 80 degrees F. In the Treasure Valley this is right about right now. We are 9 days ahead of last year.

Root maggot flies will lay eggs near sugarbeet plants. After the larvae hatch they will begin feeding on the young sugarbeets. AMSCO representatives I spoke with have not seen any adult flies yet. Look for these pests to appear in the western end of the Treasure Valley first. If you haven’t applied a treatment for sugarbeet root maggot, now is the time to do so. Consult your field representative from AMSCO for treatment options.

Cercospora leaf spot in sugarbeets

Sugarbeets    Magic Valley

Cercospora

Posted on: August 27, 2014 by Jeff Miller

Cercospora leaf spot has been confirmed in a sugarbeet field in Minidoka County. The recent wet weather has been favorable for disease development. The link below directs to an extension bulletin published by the University of Nebraska which discusses disease symptoms and fungicides which can be used for disease management.

glyphosate-resistant kochia

Sugarbeets    Treasure Valley

kochia

Posted on: August 4, 2014 by Jerry Neufeld

This is an update to the alert that was posted on June 11, 2014 regarding the suspected glyphosate-resistant kochia plants in Western Idaho and Eastern Oregon sugar beet fields. It has now been confirmed that the plants that escaped control in at least two fields in Eastern Oregon were indeed resistant to glyphosate. Tests done by the weed laboratory staff at Colorado State University in Fort Collins, CO confirmed the resistance. Kochia weed seeds will be collected from different fields at the end of the season in order to determine the distribution of glyphosate-resistant kochia in the region.

In the meantime, we would encourage growers to physically remove kochia plants that escaped control in sugar beet fields (if at all possible) in order to minimize the buildup of glyphosate-resistant seeds in the soil. Also, please report any suspicious kochia escapes to your local crop consultant, crop advisor, extension educators, Joel Felix (OSU weed scientist), or Don Morishita (UI weed scientist).

Submitted by Joel Felix, Malheur Experiment Station/Oregon State University, 595 Onion Ave, Ontario, OR 97914

Spider Mites in sugar beets

Sugarbeets    Treasure Valley

Two-spotted spider mite

Posted on: July 31, 2014 by Bill Buhrig

Two-spotted spider mites are being found in sugar beet fields in the Treasure Valley. Implementing proper scouting procedures and working with your crop consultant should be done to determine if action is necessary. For more information on the two-spotted spider mite, consult the PNW Insect Handbook at the link below.

On a related note, there has been a Section 18 granted for specific counties in Idaho and Oregon for the use of the miticide Onager in sugar beets. This is a very specific label that includes expiration dates in the coming weeks. For the eligible counties in Oregon, this label expires August 14, 2014. For eligible counties Idaho, this label expires August 31, 2014.

As is the case with all pesticides, please read and follow the label carefully!

sugarbeet pests

Sugarbeets    Treasure Valley

black bean aphid and powdery mildew

Posted on: July 11, 2014 by Jerry Neufeld

Powdery mildew has been found by Amalgamated Sugar Company Field Consultants in the Grandview, Idaho area. In addition, Black Bean Aphids have been found in sugarbeet fields in the Grandview and Nampa, Idaho areas. If Black Bean Aphids are found in your fields at a level requiring treatment, you can include an insecticide treatment for Black Bean Aphid in the mildew tank mix. Contact your Amalgamated Field Consultant for information regarding treatment recommendations.

powdery mildew in sugarbeets

Sugarbeets    All Locations

powdery mildew

Posted on: June 30, 2014 by Jerry Neufeld

Powdery mildew has been positively identified by Amalgamated Sugar Company Crop Consultants in sugarbeet fields in the western Treasure Valley of Oregon. There are several fungicides available for use to treat powdery mildew, including sulfur dusts. Depending on the disease pressure, applications with different chemistries should be repeated every 7 to 14 days. Contact your crop consultant from the Amalgamated Sugar Company if you have questions about treatment options.

Glyphosate-resistant kochia

Sugarbeets    All Locations

kochia

Posted on: June 11, 2014 by Don Morishita

Suspected glyphosate-resistant kochia has been reported in at least two locations in western Idaho and eastern Oregon sugar beet fields. It is critical to watch for kochia escapes in sugar beet and Roundup Ready corn fields. Please report any suspicious kochia escapes to your local crop consultant, crop advisor, extension educator, Joel Felix (OSU weed scientist), or Don Morishita (UI weed scientist).

sugarbeet root maggot

Sugarbeets    Treasure Valley

sugarbeet root maggot

Posted on: April 25, 2014 by Jerry Neufeld

The degree day calculator (hosted by the Integrated Plant Protection Center at Oregon State University) for the sugar beet root maggot fly shows that—depending on your location in the Treasure Valley—we have accumulated 262 degree days since March 1, 2014. Peak flight of root maggot flies should occur after 360 accumulated degree days when the maximum high temperature exceeds 80 degrees F. In the Treasure Valley this will be about May 6. Root maggot flies will lay eggs near sugarbeet plants. After the larvae hatch they will begin feeding on the young sugarbeets. AMSCO representatives have not seen any adult flies yet. Look for these pests to appear in the western end of the Treasure Valley first. If you haven’t applied a treatment for sugarbeet root maggot, now is the time to do so. Consult your field representative from AMSCO for treatment options.

various sugarbeet pests

Sugarbeets    All Locations

several insect and disease pests

Posted on: August 20, 2013 by Jerry Neufeld

The Amalgamated Sugar Company Field Consultants are reporting that black bean aphids are widespread in sugarbeet fields in the Eden and Hazleton, Idaho area. The infestation is moderate to very high, depending on the location. They appear to be moving from the east end of the Twin Falls district to the west. In addition, two spotted spider mites are widespread throughout the Treasure Valley and the Twin Falls sugarbeet growing areas.

Cercospera Leaf Spot has also been found in sugarbeet fields in the Wendell area. This disease does not show up very often and is very localized. Powdery mildew has also been found in the Twin Falls area.

Make sure to scout your fields to assess the level of infestation you may, or may not have with these pests. TASCO stresses you should contact your TASCO Field Consultant for treatment recommendations, or if you have any questions.

bean aphids in sugar beet

Sugarbeets    All Locations

bean aphids

Posted on: July 11, 2013 by Erik Wenninger

Black bean aphids have been observed in sugar beet fields at the U-Idaho Kimberly R & E Center. The bean aphid is a dark-bodied aphid, about 1/16-inch long; individuals may be winged or wingless. Aphids are most abundant on the young leaves within the crown of sugar beets. Infestations usually occur as scattered hot spots or along edges rather than uniformly across the entire field.

Aphids are attacked by a variety of predatory and parasitic insects, including lady beetles. If natural enemies are absent, consider an insecticide application if bean aphid colonies cover 20 to 40 percent of leaf surfaces.

For current information on registered insecticides, consult the Pacific Northwest Insect Management Handbook (http://pnwhandbooks.org/insect/agronomic/sugar-beet).

spider mites in sugarbeets

Sugarbeets    Treasure Valley

spider mites

Posted on: June 28, 2013 by Jerry Neufeld

Spider mites were a major issue in sugarbeets in 2012. This alert is to let you know that now is the time to be on the watch for them. If you are getting ready to apply fungicide for mildew, you might want to also scout for mites and treat them both at the same time if necessary. Always check with your Amalgamated Sugar Company Crop consultant if you have any questions.

approaching sugar beet root maggot threshold in Rupert/Paul

Sugarbeets    All Locations

sugar beet root maggot

Posted on: May 9, 2013 by Erik Wenninger

The degree day calculator (hosted by the Integrated Plant Protection Center at Oregon State University) for the sugar beet root maggot fly shows that—depending on your location in the Magic Valley—we have accumulated more than 200 degree days since March 1, 2010. Peak flight of root maggot flies should occur after 360 accumulated degree days when the maximum high temperature exceeds 80 degrees F. In the Mini-Cassia area, this usually occurs around the 2nd of June, but with warm weather this year, peak flight in Rupert may occur by midweek next week.

Monitoring flies adjacent to your sugar beet fields using orange sticky stake traps will provide even more useful information regarding the local population densities of flies. The Amalgamated Sugar Company monitors flies with sticky stake traps throughout the Mini-Cassia area and posts the counts on their website: http://www.srcoop.com/ The economic threshold for application of granular insecticides against root maggots is an accumulative total of 40-50 sugar beet root maggot flies per sticky stake trap (the threshold varies depending on your contract price per ton). In the Mini-Cassia area, which historically has had high root maggot pressure, growers should consider an insecticide application 10 days before exceeding threshold captures on sticky stakes. Otherwise, insecticide applications should be made within 10 days before or after reaching the threshold (the closer to the threshold date, the better). Activation of granular insecticides should be accomplished by irrigation as soon after application as possible. See University of Idaho publication CIS 999, IPM Guide to Sugar Beet Root Maggot: http://www.uiweb.uidaho.edu/sugarbeet/insc/sbmaggot.htm


You can monitor degree day accumulation for sugar beet root maggots as follows:

1) Log onto: http://uspest.org/cgi-bin/ddmodel.pl?spp=srm

2) Select “Sugarbeet Root Maggot Bechinski et al. 1990” degree day model from the “Select degree day model….” drop down box at the top of the form

3) In the “Select location” box, select a location in the drop down box best describing your location (e.g. “RUPERT id agmet” in the “Washington, Idaho” box if you want information for a field near Rupert). Make sure to select “None” at the top of the lists in the other two location boxes.

4) Leave the “Or upload your own…” box blank

5) In the “Forecast:” area, enter your zip code or your city, state in the “NWS zipcode/city, state” box, or the location nearest your field from the “or weather.com site” drop down box to the right). This selection forecasts 7 days forward based on the local weather forecast (beyond 7 days the forecast is based on the historical average). The predicted date of peak fly flight will vary depending on the forecast location selected, so pick the one closest to your location. Select “none” to have the forecast based only on the historical average.

6) Select the location nearest your field in the “Select historical average forecast location” area. Your selection here should match, as close as possible, your selection in the “Select location” area above: there may not be an exact match. As above, select “none” in the other two boxes.

7) Make sure the “Table” and “graph” boxes are checked (and the “precipitation” if you want rainfall information) and click the “Calc” button. A table with the current degree day accumulations matching your selection should appear. There should also be a graph near the bottom showing the current year accumulation compared to the historical average for your selections.

powdery mildew in sugarbeets

Sugarbeets    Magic Valley

powdery mildew

Posted on: August 3, 2012 by Jerry Neufeld

Powdery mildew has been positively identified by Amalgamated Sugar Company Crop Consultants in sugarbeet fields in the Magic Valley of Idaho near Filer. Based on the early disease onset a protective fungicide application is suggested as well as continued scouting to assess disease development. There are several fungicides available for use to treat powdery mildew, including sulfur dusts. Click on the pdf below for recommendations from the 2012 PNW Plant Disease handbook. Depending on the disease pressure, applications with different chemistries should be repeated every 7 to 14 days. Contact your crop consultant from the Amalgamated Sugar Company if you have questions about treatment options.

powdery mildew in sugarbeets

Sugarbeets    Treasure Valley - Idaho

powdery mildew

Posted on: July 20, 2012 by Jerry Neufeld

Powdery mildew has been positively identified by Amalgamated Sugar Company Crop Consultants in sugarbeet fields in the western Treasure Valley of Idaho and Oregon. There are several fungicides available for use to treat powdery mildew, including sulfur dusts. Click on the pdf below for recommendations from the 2012 PNW Plant Disease handbook. Depending on the disease pressure, applications with different chemistries should be repeated every 7 to 14 days. Contact your crop consultant from the Amalgamated Sugar Company if you have questions about treatment options.

sugarbeets

Sugarbeets    Treasure Valley - Idaho

powdery mildew

Posted on: July 6, 2012 by Jerry Neufeld

The Amalgamated Sugar Company Crop Consultants are saying that now is the time to plan your treatments for powdery mildew in sugarbeets. While mildew has not yet been found in the Treasure Valley, Amalgamated Crop Consultants say the modes of action of the mildew chemistries work best if treatments are applied before mildew is found in the field. They are recommending mildew applications start in the west end of the Treasure Valley in the near future for surface irrigated fields. Sprinkler irrigated fields can potentially be delayed by another week or more depending on temperatures. Contact your Amalgamated Crop Consultant for information regarding these treatment recommendations and rotation of chemistries.

sugarbeet root maggot

Sugarbeets    Magic Valley

sugarbeet root maggot

Posted on: May 16, 2012 by Jerry Neufeld

The following information was provided by Dr. Erik J. Wenninger, Entomology and Extension Specialist with the University of Idaho at the Kimberly Research & Extension Center.

The degree day calculator (hosted by the Integrated Plant Protection Center at Oregon State University) for the sugar beet root maggot fly shows that—depending on your location in the Magic Valley—we have accumulated more than 360 degree days since March 1, 2012. Peak flight of root maggot flies should occur after 360 accumulated degree days when the maximum high temperature exceeds 80 degrees F. In the Mini-Cassia area, this usually occurs around the 2nd of June, but with warmer weather this year, peak flight in Rupert was predicted to have occurred on May 14.

Monitoring flies adjacent to your sugar beet fields using orange sticky stake traps will provide even more useful information regarding the local population densities of flies. The Amalgamated Sugar Company monitors flies with sticky stake traps throughout the Mini-Cassia area and posts the counts on their website: http://www.srcoop.com/ The economic threshold for application of granular insecticides against root maggots is an accumulative total of 40-50 sugar beet root maggot flies per sticky stake trap (the threshold varies depending on your contract price per ton). In the Mini-Cassia area, which historically has had high root maggot pressure, growers should consider an insecticide application 10 days before exceeding threshold captures on sticky stakes. Otherwise, insecticide applications should be made within 10 days before or after reaching the threshold (the closer to the threshold date, the better). Activation of granular insecticides should be accomplished by irrigation as soon after application as possible. See University of Idaho publication CIS 999, IPM Guide to Sugar Beet Root Maggot: http://www.uiweb.uidaho.edu/sugarbeet/insc/sbmaggot.htm

You can monitor degree day accumulation for sugarbeet root maggots as follows:
1) Log onto: http://uspest.org/cgi-bin/ddmodel.pl?spp=srm
2) Select “Sugarbeet Root Maggot Bechinski et al. 1990” degree day model from the “Select degree day model….” drop down box at the top of the form
3) In the “Select location” box, select a location in the drop down box best describing your location (e.g. “RUPERT id agmet” in the “Washington, Idaho” box if you want information for a field near Rupert). Make sure to select “None” at the top of the lists in the other two location boxes.
4) Leave the “Or upload your own…” box blank
5) In the “Forecast:” area, enter your zip code or your city, state in the “NWS zipcode/city, state” box, or the location nearest your field from the “or weather.com site” drop down box to the right). This selection forecasts 7 days forward based on the local weather forecast (beyond 7 days the forecast is based on the historical average). The predicted date of peak fly flight will vary depending on the forecast location selected, so pick the one closest to your location. Select “none” to have the forecast based only on the historical average.
6) Select the location nearest your field in the “Select historical average forecast location” area. Your selection here should match, as close as possible, your selection in the “Select location” area above: there may not be an exact match. As above, select “none” in the other two boxes.
7) Make sure the “Table” and “graph” boxes are checked (and the “precipitation” if you want rainfall information) and click the “Calc” button. A table with the current degree day accumulations matching your selection should appear. There should also be a graph near the bottom showing the current year accumulation compared to the historical average for your selections.

cutworms found in sugar beet

Sugarbeets    Magic Valley

cutworms

Posted on: April 23, 2012 by Erik Wenninger

Heavy infestations of cutworms have been observed by Dave Scantlin (crop consultant, The Amalgamated Sugar Company) in sugar beet fields in Jerome, Wendell, and western Twin Falls County.

Cutworms generally are nocturnal, remaining by day just under the soil surface; often they are not seen until after the plant already has been damaged. Cutworm larvae are about 1 inch when mature and vary in color from light gray to dark brown, with faint stripes or fine mottles on their smooth, hairless, soft bodies. They curl into a motionless C-shape when disturbed. Subterranean species feed on roots and stems, cutting off plants at the soil surface. Climbing species hide during the day in soil and either cut off plants at the soil surface or feed in the crown on newest leaves and stems.

Scouting is easiest when done early in the morning. Lightly scrape the soil surface and look for larvae. No formal economic thresholds exist for cutworm insecticide treatment decisions in sugar beet. Infestations typically are very spotty, usually occurring near weedy patches or along field borders. Consider spot treating infested sites rather than the entire field.

Insecticide seed treatments may suppress cutworms, but will not control heavy infestations. For current information on registered insecticides, consult the Pacific Northwest Insect Management Handbook.

sugar beet root aphid

Sugarbeets    Magic Valley

root aphid

Posted on: September 19, 2011 by Jerry Neufeld

Erik Wenninger, UI Entomology and Extension Specialist at the Kimberly R & E Center is reporting that sugar beet root aphids were observed in root samples taken last week from common lambsquarters in Kimberly. Sugar beet fields in Kimberly have not yet been thoroughly scouted, but at least some beets are expected to be infested. Overall root aphid numbers appear to be lower and infestations seem to have begun later than in previous years. Sugar beet root aphids may be pinhead sized and up to 5/64-inch (2 mm) long. They are pale whitish yellow and broadly oval to pear shaped. They secrete white, waxy strands, which give beets a distinctive “moldy” appearance. Severe infestations may reduce tonnage and sucrose levels. There are no rescue insecticide options available; when root aphids are found attacking beets, cultural control practices should be followed, the most important of which is to maintain optimum irrigation. For more information on identifying and managing sugar beet root aphids, see the following extension publication at the link below:

powdery mildew in sugar beets

Sugarbeets    Treasure Valley - Idaho

powdery mildew

Posted on: July 26, 2011 by Jerry Neufeld

Powdery mildew has been positively identified by Amalgamated Sugar Company Representatives in sugar beet fields in the western Treasure Valley. There have also been reports of loopers in many Treasure Valley sugarbeet fields. As you scout your fields for powdery mildew, you may also want to be on the lookout for loopers and black bean aphids. There are several fungicides available for use to treat powdery mildew, including sulfur dusts. Click on the link below for recommendations from the 2011 PNW Plant Disease handbook. Depending on the disease pressure, applications with different chemistries should be repeated every 10 to 14 days. Contact your field representative from the Amalgamated Sugar Company if you have questions about treatment options.

Black Bean Aphid

Sugarbeets    Magic Valley

Black Bean Aphid

Posted on: July 20, 2011 by Jerry Neufeld

Dr. Erik J. Wenninger, Entomology and Extension Specialist with the University of Idaho at the Kimberly R and E Center is reporting that Black Bean Aphids have been observed in sugar beet fields at the U-Idaho Kimberly R & E Center. The black bean aphid is a dark-bodied aphid, about 1/16-inch long; individuals may be winged or wingless. So far primarily winged individuals have been found, but they will soon produce colonies of wingless aphids on beets. Aphids may be found on the young leaves within the crown of sugar beets. Infestations usually occur as scattered hot spots or along edges rather than uniformly across the entire field. Colonies can produce massive amounts of honeydew, which may result in black, sooty mold covering the leaves.

Aphids are attacked by a large variety of predatory and parasitic insects. We do not yet know enough about arthropod natural enemies to suggest practical ways of manipulating and enhancing their effects other than avoiding any unnecessary insecticide applications. See the Extension publication PNW 343, Beneficial Insects Associated with Pacific Northwest Crops, for descriptions of common natural enemies.

If natural enemies are absent, consider an insecticide application if bean aphids are on most leaves and if colonies cover 20 to 40 percent of leaf surfaces. When scouting a field, it is important to sample plants in several representative areas across a field, because infestations may be patchy. It is advisable to also assess natural enemy populations at this time when making a decision on whether to apply insecticides. In addition to sugar beets, black bean aphids may be found in other crops, including beans and corn.

For current information on registered insecticides and other information about black bean aphids click on the links below.

cutworms in sugarbeets

Sugarbeets    Treasure Valley - Idaho

cutworms

Posted on: April 20, 2011 by Jerry Neufeld

Amalgamated Sugar Company Field Reps are reporting cutworms have been found in sugarbeet fields near Grandview. There are many species of cutworms that attack sugarbeets, but all are nocturnal, so you may see injury but not readily find the insect damaging the sugarbeets. Cutworms are usually worse in fields where there is crop residue, such as following alfalfa. If you see “skips” in the field, dig around in the soil where you would have expected a plant and you will likely find the lower portion of a cut plant. Larvae are often found less than an inch below the soil surface near a damaged plant. If you have any questions, contact your Amalgamated Fieldman.

sugarbeet root aphids

Sugarbeets    Magic Valley

sugarbeet root aphids

Posted on: August 20, 2010 by Jerry Neufeld

UI Extension Entomologist Erik Wenninger is reporting that sugar beet root aphids have been observed on the roots of common lambsquarters within sugar beet fields in Kimberly. Aphids have not yet been observed on adjacent beets, but they are expected to move to beets soon. Sugar beet root aphids may be pinhead sized and up to 5/64-inch (2 mm) long. They are pale whitish yellow and broadly oval to pear shaped. They secrete white, waxy strands, which give beets a distinctive “moldy” appearance. Severe infestations may reduce tonnage and sucrose levels. There are no rescue insecticide options available; when root aphids are found attacking beets, cultural control practices should be followed (see below).

Sugar beet root aphids feed on the roots of sugar beet plants, but will also attack closely related species, including spinach, table beets, common lambsquarters, and pigweed. Pulling alternate weed hosts found within or adjacent to sugar beet fields and inspecting the roots for aphids and distinctive wax secretions may be a convenient method of preliminary scouting. If aphids are found on weeds, then nearby sugar beets should be examined as well.

When root aphid infestations are found on sugar beets, careful maintenance of a proper irrigation schedule is the single most important cultural control tool available. Damage by root aphids is exacerbated when plants are drought stress (conversely, diseases are encouraged when plants are over irrigated), so an optimal irrigation schedule will enhance the ability of the crop to resist attack from aphids. In addition, good management of alternate weed hosts (including lambsquarters, dock, pigweed, and prostrate knotweed) is important, and care should be taken to avoid contaminating uninfested fields with soil or irrigation water from an infested field. The use of resistant sugar beet varieties may be considered for future plantings.

Black Bean Aphids

Sugarbeets    Magic Valley

Black Bean Aphid

Posted on: August 10, 2010 by Jerry Neufeld

UI Extension Entomologist Erik Wenninger is reporting sporadic black bean aphid infestations have been observed in several sugar beet fields across the Magic Valley. The black bean aphid is a dark-bodied aphid, about 1/16 inch long; individuals may be winged or wingless. Aphids may be found on the young leaves within the crown of sugar beets. Infestations usually occur as scattered hot spots or along edges rather than uniformly across the entire field. Colonies can produce massive amounts of honeydew, which causes a black, sooty mold to cover the leaves.

There are no formal economic thresholds for insecticide treatment decisions for bean aphids, but treatment should be considered if fields are under heavy pressure. When scouting a field, it is important to sample plants in several representative areas across a field, because infestations may be patchy. Also, several predators (notably, lady beetles) and parasites attack bean aphids and may effectively suppress aphid populations. Therefore, it is advisable to assess natural enemy populations when making a decision on whether to apply insecticides.

In addition to sugar beets, black bean aphids may be found in other crops, including beans and corn.
For current information on registered insecticides, consult the Pacific Northwest Insect Management Handbook (http://uspest.org/pnw/insects).

Powdery Mildew in Sugarbeets

Sugarbeets    Treasure Valley - Idaho

Powdery Mildew

Posted on: June 25, 2010 by Jerry Neufeld

The Amalgamated Sugar Company Field Representatives are saying that now is the time to plan your treatments for powdery mildew in sugarbeets. While mildew has not yet been found in the Treasure Valley, White Satin Field staff say the modes of action of the mildew chemistries work best if treatments are applied before mildew is found in the field. They are recommending mildew treatments begin in the west end of the Treasure Valley the week after July 4 regardless of whether or not your fields are surface or sprinkler irrigated. You may also want to include an insecticide treatment for black bean aphid or loopers in the mildew tank mix. Contact your Amalgamated Fieldman for information regarding these treatment recommendations and rotation of chemistries.

Sugarbeet Leafminer

Sugarbeets    Magic Valley

Leafminer

Posted on: June 10, 2010 by Jerry Neufeld

Heavy leafminer activity has been observed in several sugar beet fields across the Magic Valley. Maggots feed between the upper and lower leaf surfaces, leaving irregular transparent windows, blotches, and winding tunnels. Eggs are tiny, white, and cigar shaped and are laid on the underside of leaves and cotyledons; they may be laid singly or in groups of two or more. Eggs may be readily observed without magnification. Under very warm conditions, eggs may hatch within four days, but will take longer to hatch under the cooler conditions that we have experienced this spring. There are no formal economic thresholds for insecticide treatment decisions for leafminers, but treatment should be considered if fields are under heavy pressure. To scout a field, sample ten plants in each of several representative areas across a field. Record the average number of eggs and mines per plant observed in each area. Foliar insecticides should be considered within a few days after the first appearance of mines or before most eggs have hatched. Alternatively, systemic granular insecticide should still be effective if applied (and activated) shortly after most larvae have tunneled into leaves. Insecticide seed treatment should also provide control against early-season leafminer attack, which is expected to be more damaging than later-season attack. For current information on registered insecticides, consult the Pacific Northwest Insect Management Handbook (http://uspest.org/pnw/insects).

This information was provided by Dr. Erik Wenninger, UI Extension Entomology Specialist.

sugatbeet root maggot

Sugarbeets    Magic Valley

sugarbeet root maggot

Posted on: May 25, 2010 by Jerry Neufeld

The degree day calculator (hosted by the Integrated Plant Protection Center at Oregon State University) for the sugarbeet root maggot fly shows that—depending on your location in the Magic Valley—we have accumulated about 237 degree days since March 1, 2010. Peak emergence of root maggot flies should occur around 350 accumulated degree days when the maximum high temperature exceeds 80 degrees F. In the Mini-Cassia area, this usually occurs around the 2nd of June. With recent temperatures being cooler than average, peak flight should occur slightly later (around the 5th of June in the Rupert area).

Monitoring flies adjacent to your sugar beet fields using orange sticky stake traps will provide even more useful information regarding the local population densities of flies. The Amalgamated Sugar Company monitors flies with sticky stake traps throughout the Mini-Cassia area and posts the counts on their website: http://www.srcoop.com/ The economic threshold for application of granular insecticides against root maggots is an accumulative total of 40-50 sugarbeet root maggot flies per sticky stake trap (the threshold varies depending on your contract price per ton). In the Mini-Cassia area, which historically has had high root maggot pressure, growers should consider an insecticide application 10 days before exceeding threshold captures on sticky stakes. Otherwise, insecticide applications should be made within 10 days before or after reaching the threshold (the closer to the threshold date, the better). Activation of granular insecticides should be accomplished by irrigation as soon after application as possible. See University of Idaho publication CIS 999, IPM Guide to Sugar Beet Root Maggot: http://www.uiweb.uidaho.edu/sugarbeet/insc/sbmaggot.htm

You can monitor degree day accumulation for sugarbeet root maggots as follows:
1) Log onto: http://uspest.org/cgi-bin/ddmodel.pl?spp=srm
2) Select “Sugarbeet Root Maggot Bechinski et al. 1990” degree day model from the “Select degree day model….” drop down box at the top of the form
3) In the “Select location” box, select a location in the drop down box best describing your location (e.g. “RUPERT id agmet” in the “Washington, Idaho” box if you want information for a field near Rupert). Make sure to select “None” at the top of the lists in the other two location boxes.
4) Leave the “Or upload your own…” box blank
5) In the “Forecast:” area, enter your zip code or your city, state in the “NWS zipcode/city, state” box, or the location nearest your field from the “or weather.com site” drop down box to the right). This selection forecasts 7 days forward based on the local weather forecast (beyond 7 days the forecast is based on the historical average). The predicted date of peak fly flight will vary depending on the forecast location selected, so pick the one closest to your location. Select “none” to have the forecast based only on the historical average.
6) Select the location nearest your field in the “Select historical average forecast location” area. Your selection here should match, as close as possible, your selection in the “Select location” area above: there may not be an exact match. As above, select “none” in the other two boxes.
7) Make sure the “Table” and “graph” boxes are checked (and the “precipitation” if you want rainfall information) and click the “Calc” button. A table with the current degree day accumulations matching your selection should appear. There should also be a graph near the bottom showing the current year accumulation compared to the historical average for your selections.

This information is provided by Dr. Erik J. Wenninger, UI Extension Entomology Specialist in Twin Falls.

sugarbeet root maggot

Sugarbeets    Treasure Valley - Idaho

sugarbeet root maggot

Posted on: May 18, 2010 by Jerry Neufeld

According to a representative from Amalgamated Sugar Company, growing degree day models indicate that adult sugarbeet root maggot flies will begin their spring emergence and begin flying in the very near future. Adult flies will lay eggs near sugarbeet plants. After the larvae hatch they will begin feeding on the young sugarbeets. AMSCO representatives have not seen any adult flies yet, but warn they will be flying any day now. Look for these pests to appear in the western end of the Treasure Valley first. If you haven’t applied a treatment for sugarbeet root maggot, now is the time to do so. Consult your crop advisor or field representative from AMSCO for treatment options.

powdery mildew in sugarbeets

Sugarbeets    Treasure Valley - Idaho

Posted on: July 14, 2009 by Jerry Neufeld

According to Amalgamated Sugar Co. field reps, powdery mildew has been found in sugarbeet fields near Homedale, Idaho.

sugarbeet pests

Sugarbeets    Treasure Valley - Idaho

Posted on: July 6, 2009 by Jerry Neufeld

Amalgamated Sugar Company field staff are reporting loopers and army worms have been found in sugarbeet fields in the Grandview/Bruneau areas. Other Amalgamated Sugar Company field staff are also starting to see these pests in the Treasure valley. Growers need to scout fields often. It is suggested that an insecticide be added at the time of treatment for powdery mildew. Consult your Amalgamated Sugar fieldman for more information.

powdery mildew in sugarbeets

Sugarbeets    Treasure Valley - Idaho

Posted on: June 25, 2009 by Jerry Neufeld

The Amalgamated Sugar Company Field Representatives are saying that now is the time to plan your treatments for powdery mildew in sugarbeets.
While mildew has not yet been found in the Treasure Valley, White Satin Field staff say the modes of action of the mildew chemistries work best if treatments are applied before mildew is found in the field. They are recommending mildew applications in the west end of the Treasure Valley the week after July 4 regardless of whether or not your fields are surface or sprinkler irrigated. You may also want to include an insecticide treatment for black bean aphid or loopers in the mildew tank mix. CONTACT YOUR WHITE SATIN FIELD REPRESENTATIVE FOR INFORMATION REGARDING THESE TREATMENT RECOMMENDATIONS AND ROTATION OF CHEMISTRIES.

powdery mildew in sugarbeets

Sugarbeets    All Locations

Posted on: June 27, 2008 by Jerry Neufeld

The Amalgamated Sugar Company Field Representatives are saying that now is the time to plan your treatments for powdery mildew in sugarbeets. While mildew has not yet been found in the Treasure Valley, White Satin Field staff say the modes of action of the mildew chemistries work best if treatments are applied before mildew is found in the field. They are recommending mildew applications in the west end of the Treasure Valley the week after July 4 regardless of whether or not your fields are surface or sprinkler irrigated. You may also want to include an insecticide treatment for black bean aphid or loopers in the mildew tank mix. CONTACT YOUR WHITE SATIN FIELD REPRESENTATIVE FOR INFORMATION REGARDING THESE TREATMENT RECOMMENDATIONS AND ROTATION OF CHEMISTRIES.

Leaf miners in sugarbeets

Sugarbeets    Magic Valley

Posted on: June 16, 2008 by Steve Hines

Leaf miners have been found in sugar beets in the MiniCassia area. Mainly in larger beets. If you have questions, call your Almagameted Sugar fieldman.

cutworms in sugarbeets

Sugarbeets    Treasure Valley - Idaho

Posted on: April 24, 2008 by

Amalgamated Sugar Company Field Reps are reporting cutworms were found in sugarbeets near Bruneau and Grandview. There are many species of cutworms that attack sugarbeets, but all are nocturnal, so you may see injury but not readily find the insect damaging the plants. If you see skips in the field, dig around in the soil where you would have expected a plant and you will likely find the lower portion of a cut plant. Larvae are often found less than an inch below the soil surface near a damaged plant. If you have any questions, contact your Amalgamated Fieldman.

powdery mildew

Sugarbeets    Magic Valley

Posted on: July 24, 2007 by Jerry Neufeld

Sugarbeet powdery mildew has been identified in the Magic Valley near Filer, Idaho, today (7/23/07) by Amalgamated Sugar Company fieldmen Nic Wittman and Dave Scantlin. Dr John Gallian confirmed the diagnosis. Growers in the
area are advised to begin their powdery mildew spray programs to minimize economic loss.

powdery mildew

Sugarbeets    All Locations

Posted on: July 13, 2007 by Jerry Neufeld

Howard Binford from the Amalgamated Sugar Company is reporting that powdery mildew has been found in a sugarbeet field north of Adrian, Oregon.

powdery mildew in sugarbeets

Sugarbeets    All Locations

Posted on: June 27, 2007 by Jerry Neufeld

The Amalgamated Sugar Company Field Representatives are saying that now is the time to plan your treatments for powdery mildew in sugarbeets. While mildew has not yet been found in the Treasure Valley, White Satin Field staff say the modes of action of the mildew chemistries work best if treatments are applied before mildew is found in the field. They are recommending mildew applications in the west end of the Treasure Valley by July 4, and applications in the east end of the Treasure Valley (Ada/Canyon County line) no later than July 10. Treatments should be made by these dates regardless of whether or not your fields are surface or sprinkler irrigated. THIS WEBSITE DOES NOT CONTAIN A REFERENCE PAGE FOR POWDERY MILDEW IN SUGARBEETS. CONTACT YOUR WHITE SATIN FIELD REPRESENTATIVE FOR INFORMATION REGARDING THEIR TREATMENT RECOMMENDATIONS AND ROTATION OF CHEMISTRIES.

sugarbeet root maggot

Sugarbeets    All Locations

Posted on: April 19, 2007 by Jerry Neufeld

Field representatives from the Amalgamated Sugar Company are reporting adult sugarbeet root maggot flies have emerged and are flying. GDD models indicate peak flight will be in the next few days. This is quite a bit earlier than in the past few years.

Adult flies will lay eggs near the sugarbeet plants 3 to 10 days after they emerge. After the larvae hatch they will begin feeding on the young sugarbeets. Potential maggot damage could be worse this year since there are so many replanted fields with small beets at the time the maggots are feeding. Look for these pests to appear in the western end of the Treasure Valley first. If you haven’t applied a treatment for sugarbeet root maggot, contact your White Satin fieldman for further information.

powdery mildew in sugarbeets

Sugarbeets    All Locations

Posted on: July 21, 2006 by Jerry Neufeld

Dr. John Gallian, Extension Plant Pathologist and Sugarbeet Specialist at the University of Idaho, Twin Falls R&E Center recently posted this message to the UIsugarbeet-INFO digest regarding powdery mildew in sugarbeets.

Bayer CropScience has a 2(ee) label for Gem Fungicide that allows for the application of Gem 25WG at the reduced rate of 5 oz/acre in combination with a minimum of 5 lb/acre of micronized wettable or dispersible sulfur. Although the 2(ee) label does not specify where the reduced rate should be used, Bayer's sales recommendation specifically states "In the Magic Valley or where powdery mildew pressure is usually less severe and residual control requirements are less, Gem may be used at a reduced rate of 5 oz/acre tank mixed with 5 lbs/acre micronized or dispersible sulfur per our ID/OR 2(ee)=85.".

I understand that this reduced rate is being recommended and applied in the Treasure Valley. I STRONGLY recommend against applying the reduced rate in the Treasure Valley where disease pressure is high! Gem, Headline, and Topsin are all at risk for resistance in powdery mildew to develop. Using less than the full rate of an "at risk" fungicide greatly increases the probability of selecting a resistant pathogen population.

In the Treasure Valley, I recommend that if Gem is to be used, only the full 7 oz/acre rate, tank mixed with a minimum of 5 lbs/acre sulfur, be applied at the earliest opportunity. At-risk fungicides should be used early in the epidemic when the pathogen population is low - just before or immediately after powdery mildew is first detected. This treatment timing is appropriate with all registered fungicides in all locations. All at risk fungicides should be tank mixed with a minimum of 5 lbs/acre of sulfur for resistance management. We should do everything we can to preserve the efficacy of all our fungicides by following best management practices for avoiding resistance from developing.

For further information, visit our website at:http://www.uidaho.edu/sugarbeet/Managingfungresist.htm

Dr. John J. Gallian
Extension Plant Pathologist and Sugarbeet Specialist
University of Idaho, Twin Falls R&E Center
P.O. Box 1827
Twin Falls, ID 83303-1827
(208)736-3600 Fax: (208)736-0843
Web Page: www.uidaho.edu/sugarbeet/

powdery mildew in sugarbeets

Sugarbeets    All Locations

Posted on: July 10, 2006 by Jerry Neufeld

Powdery mildew has been positively identified by Amalgamated Sugar Company Representatives in sugarbeet fields in the western Treasure Valley (Homedale, ID; Vale and Adrian, OR areas). While there have been no reports of black bean aphids, loopers or armyworms, they typically show up about this time of year. As you scout your fields for powdery mildew, you may also want to be on the lookout for these pests. Contact your field representative from the Amalgamated Sugar Company if you have questions.

Powdery Mildew in Sugarbeets

Sugarbeets    Treasure Valley - Idaho

Posted on: June 19, 2006 by Jerry Neufeld

The Amalgamated Sugar Company Field Representatives (TASCO) are saying that now is the time to plan your treatments for powdery mildew in sugarbeets. While mildew has not yet been found in the Treasure Valley, TASCO Field Representatives say the modes of action of the mildew chemistries work best if treatments are applied before mildew is found in the field. TASCO is recommending mildew applications in the west end of the Treasure Valley by July 5, and applications in the east end of the Treasure Valley (Ada/Canyon County line) no later than July 10. Treatments should be made by these dates regardless of whether or not your fields are surface or sprinkler irrigated. THIS WEBSITE DOES NOT CONTAIN A REFERENCE PAGE FOR POWDERY MILDEW IN SUGARBEETS. CONTACT YOUR FIELD REPRESENTATIVE FROM TASCO FOR THEIR TREATMENT RECOMMENDATIONS.

Sugarbeet root maggot

Sugarbeets    Magic Valley

Posted on: June 2, 2006 by Kelly Tindall

According to sticky stake captures, sugar beet root maggots have reached threshold in about 50% of trap locations in the Minidoka area. Counts in the Cassia area are still below threshold. Consult Amalgamated’s website for trap captures in your area to determine if insecticide is warranted in your area. (http://www.amalgamatedsugar.com/articles/2006RtMaggotStickyStake.pdf)

sugarbeet root maggot

Sugarbeets    Treasure Valley - Idaho

Posted on: May 11, 2006 by Jerry Neufeld

Field representatives from the Amalgamated Sugar Company are reporting adult sugarbeet root maggot flies have emerged and are flying. Adult flies begin to lay eggs near sugarbeet plants 3 to 10 days after emergence. After the larvae hatch they will begin feeding on the young sugarbeets. If you haven’t applied a treatment for sugarbeet root maggot consult your crop advisor or field representative from AMSCO for treatment options.

Cutworms in sugarbeets

Sugarbeets    Magic Valley

Posted on: May 11, 2006 by Kelly Tindall

Cutworms ½ - ¾ inches were found in sugarbeets near Hunt in Jerome County. There are many species that attack sugarbeets but all are nocturnal, so you may see injury but not readily find the insect damaging the plants. If you see skips in the field, dig around the in the soil where you would have expected a plant and you will likely find the lower portion of a cut plant. Larvae are often found less than an inch below the soil surface near a damaged plant. At this time there are no established thresholds for cutworms in sugarbeets, but it may be worthwhile to consider adding an insecticide in with your next post-emergence herbicide application if you are seeing larvae and signs of injury. If you have any questions, you can contact Kelly Tindall (734-9590) or your Amalgamated Fieldman.

Potato Disease Management Meeting

Sugarbeets    All Locations

Posted on: November 22, 2005 by Jeff Miller

University of Idaho Crop Consultant Training Workshop
December 14, 2005
Best Western Conference Center
800 N. Overland Ave.; Burley, ID

For all potato growers and consultants:

Come to learn the latest information on managing diseases of potato. Presentations will be given on managing soilborne, foliar, and storage diseases of potatoes.

Agenda:

8:30-9:30: Managing Rhizoctonia canker in potato

9:30-10:30: Managing foliar diseases (white mold, early blight, and late blight with some information on black dot)

10:30-12:00: Managing storage diseases of potato (pink rot, leak, silver scurf, and dry rot)


Presentations will be given by Dr. Jeff Miller (University of Idaho) and Dr. Terry Miller (Miller Research, Inc.) and will focus on new results from fungicide trials relating to product rates, fungicide application timing and methods, and strategies for avoiding the development of fungicide resistance in pest populations.

Please contact Jeff Miller at 208-397-4181 for further information.

Powdery Mildew in Sugarbeets

Sugarbeets    Treasure Valley - Idaho

Posted on: July 13, 2005 by Steven Reddy

Powdery Mildew has been identified by Amalgamated Sugar Company Field Staff in the Middleton and Notus areas of the Treasure Valley.
In addition, Black Bean Aphid has been identified in the same fields. In many cases, an insecticide can be tank mixed with your Powdery Mildew treatment. Consult with your field representative for recommendations.

Eminent Registration in Sugarbeets

Sugarbeets    All Locations

Posted on: June 14, 2005 by Jerry Neufeld

Dr. John Gallian, Sugarbeet Specialist and Plant Pathologist at the University of Idaho Twin Falls R&E Center posted this message to the UIsugarbeet-INFO digest regarding registration for Eminent Fungicide.

Eminent 125SL (tetraconazole) has been given a 24(c) Special Local Need (SLN) registration for use in Idaho for powdery mildew and Cercospora leafspot control on sugarbeets. This registration will be valid beginning with the 2005 growing season through November 30, 2012.

This registration provides sugarbeet growers with a fungicide for resistance management that has a different mode of action than the strobilurins (Gem and Headline) and the benzimidizoles (Topsin M). Eminent is a sterol demethylation inhibitor (DMI) fungicide and should be applied in tank mix or in alternate applications with non- DMI fungicides. It belongs to the triazole group of fungicides.

Check our website at www.uidaho.edu/sugarbeet under "Pesticides" for more information on resistance management and under "Diseases" for Eminent powdery mildew efficacy data for each year since 2001.

Eminent 125SL is to be applied at 13 fl oz/acre and must be alternated with a non-triazole fungicide which is registered for sugarbeets. For the complete label, you can check the Idaho State Department of Agriculture website www.agri.state.id.us. Follow these links, "Programs & Services" "Pesticides" "Product Registrations" "Section 24c Labels."

Sugarbeet Root Maggot

Sugarbeets    Treasure Valley - Idaho

Posted on: May 2, 2005 by Jerry Neufeld

According to a representative from Amalgamated Sugar Company, growing degree day models indicate that adult sugarbeet root maggot flies will begin their spring emergence and begin flying in the very near future. Adult flies will lay eggs near sugarbeet plants. After the larvae hatch they will begin feeding on the young sugarbeets. AMSCO representatives have not seen any adult flies yet, but warn they will be flying any day now. Look for these pests to appear in the western end of the Treasure Valley first. If you haven’t applied a treatment for sugarbeet root maggot, now is the time to do so. Consult your crop advisor or field representative from AMSCO for treatment options.

Cutworms

Sugarbeets    Treasure Valley - Idaho

Posted on: April 14, 2005 by Jerry Neufeld

Representatives from Amalgamated Sugar Company are reporting they have found a few sugarbeet fields around the valley that are being damaged by cutworms. Weedy spots and field borders are typically “hot spots” for these pests.

powdery mildew in sugarbeets

Sugarbeets    Treasure Valley - Idaho

Posted on: July 12, 2004 by Jerry Neufeld

Powdery mildew has been positively identified by Amalgamated Sugar Company Representatives in sugarbeet fields in the western Treasure Valley, Wilder and Star areas. In addition, black bean aphids and loopers have been found in several sugarbeet fields around the county. An insecticide for aphids and loopers can be tank mixed with a fungicide to treat both pests at the same time.

Laredo is not available this year to treat powdery mildew in sugarbeets. U of Idaho Sugarbeet Specialist Dr. John Gallian is recommending that you do not use chemicals with the same mode of action more than once a year on the same sugarbeet fields. In addition, Dr. Gallian is recommending the addition of 5 pounds of sulfur to each treatment in order to fight resistance. Contact your AMSCO field representative if you have any questions.

powdery mildew in sugarbeets

Sugarbeets    Treasure Valley - Idaho

Posted on: June 25, 2004 by Jerry Neufeld

Amalgamated Sugar Company Field Representatives are saying that now is the time to be considering your treatment plan for powdery mildew in sugarbeets. While mildew has not yet been found in the Treasure Valley, the modes of action of the mildew chemistries work best if treatments are applied before mildew is even found in the field. Dennis Searle, AMSCO Agronomist is recommending mildew applications in the west end of the Treasure Valley by July 5 and applications in the east end of the Treasure Valley no later than July 10. Dennis says that treatments should be made by these dates regardless of whether or not your fields are surface or sprinkler irrigated. Also, loopers and other worms are being found in sugarbeet fields. Be on the look out for these pests. In many cases an insecticide can be tank mixed with your mildew treatment. CONTACT YOUR FIELD REPRESENTATIVE FROM AMSCO IF YOU HAVE ANY QUESTIONS.

sugarbeet root maggots

Sugarbeets    Treasure Valley - Idaho

Posted on: April 20, 2004 by Jerry Neufeld

Amalgamated Sugar Company field representatives are reporting that sugarbeet root maggot flies have been spotted in the Ontario and Wieser areas. If you have not yet applied a treatment for sugarbeet root maggots do so as soon as possible. Contact your field representative for treatment options.

cutworms

Sugarbeets    Treasure Valley - Idaho

Posted on: April 20, 2004 by Jerry Neufeld

Amalgamated Sugar Company field representatives are reporting cutworms in many sugarbeet fields across the Treasure Valley. Infestations are worst in fields where sugarbeets are following grain or corn, or those fields that have had mint sludge applied to them.

Sugarbeet Root Maggot

Sugarbeets    Treasure Valley - Idaho

Posted on: April 7, 2004 by Jerry Neufeld

Dennis Searle, Agronomist with AMSCO is reporting that due to the warm weather we are running about 10 growing degree days ahead of last year. This means that very soon overwintering root maggot pupa will begin emerging as adults and begin flying. In 2003 the peak capture of maggot flies was about May 13 in the Caldwell vicinity according to the sugarbeet root maggot growing degree day model developed by Dr. Ed Bechinski from the U of Idaho. In 2004 the same model is predicting peak capture of maggot flies on about April 22. Dennis thinks we will see flies flying within about 10 days, and maggots feeding on sugarbeets by the end of April. Look for these pests to appear in the western end of the Treasure Valley first. If you haven’t applied a treatment for sugarbeet root maggot, now is the time to do so. Consult your crop advisor or field representative from AMSCO for treatment options.

Larado Cleared for Sugarbeets in Oregon for powdery mildew c

Sugarbeets    Treasure Valley - Oregon

Posted on: August 1, 2003 by Lynn Jensen

Larado has recieved a section 18 emergency label for powdery mildew control in sugarbeets for the 2003 crop year. There is a limit of application per season.

laredo on sugarbeets

Sugarbeets    Treasure Valley - Idaho

Posted on: July 31, 2003 by Jerry Neufeld

USEPA has approved the use of Laredo to control powdery mildew on sugar beets in Idaho. EPA changed the number of applications to only a single application, even though two were requested. You can view the label document, along with other Section 18 approvals on the ISDA website at http://www.idahoag.us/agresource/section18.htm

update on Laredo

Sugarbeets    Treasure Valley - Idaho

Posted on: July 28, 2003 by Jerry Neufeld

The following information about Laredo was posted on the UIsugarbeet website by Dr. John Gallian.

The EPA has notified George Robinson, Idaho State Department of Agriculture, that a decision will be made during the week of July 28 whether to grant the Section 18 for Laredo. If we receive permission to use Laredo, it will allow the material to be applied as the second application for powdery mildew where a strobilurin (Gem or Headline) or benzimidazole (Topsin M) has already been
applied, allowing good resistance management practices to be followed.

black bean aphid

Sugarbeets    Treasure Valley - Idaho

Posted on: July 23, 2003 by Jerry Neufeld

Amalgamated Sugar Company is reporting that Black Bean Aphids are being found in sugarbeet fields across the Treasure Valley. Growers are often mixing an insecticide with a fungicide for powdery mildew and applying them at the same time. At the present time, Laredo is still not labeled for powdery mildew in sugarbeets in Idaho. ISDA is still waiting for US-EPA to approve the label.

powdery mildew in sugarbeets

Sugarbeets    Treasure Valley - Idaho

Posted on: July 10, 2003 by Jerry Neufeld

Powdery mildew has been positively identified by Amalgamated Sugar Company Representatives in sugarbeet fields in the Notus, Weiser and Ontario areas. In addition, loopers have been found in several sugarbeet fields around the county. An insecticide for loopers can be tank mixed with a fungicide to treat both pests at the same time.

At the present time, Laredo does not have a label for powdery mildew in sugarbeets in Idaho. ISDA and UI are working with the manufacturer and EPA on this issue. If Laredo does become available I will post that information to this website.

UI Sugarbeet Specialist Dr. John Gallian is recommending that you do not use chemicals with the same mode of action more than once a year on the same fields. In addition, he is recommending that you add 5 pounds of sulfur to each treatment in order to fight resistance.

powdery mildew in sugarbeets

Sugarbeets    Treasure Valley - Idaho

Posted on: July 7, 2003 by Jerry Neufeld

Representatives from Amalgamated Sugar Company are saying that now is the time to be on the lookout for powdery mildew in sugarbeets. Mildew usually shows up first at the western end of the Treasure Valley and moves east. Amalgamated field representatives are closely monitoring the mildew situation, an alert will be posted when the disease is actually found.

sugarbeet root maggot

Sugarbeets    Treasure Valley - Idaho

Root Maggot

Posted on: May 16, 2003 by Jerry Neufeld

Amalgamated Sugar Company is reporting that a few sugarbeet root maggot flies have been found on sticky stakes in Elmore and Owyhee counties. No flies have been caught in the Nampa/Caldwell area. According to the growing degree day model, peak flight for the flies will occur in the next few days.

Sugarbeet Root Maggot

Sugarbeets    Treasure Valley - Idaho

Posted on: May 13, 2003 by Jerry Neufeld

According to the growing degree day model for sugarbeet root maggot developed by Dr. Ed Bechinski from the U of I, peak flight of maggot flies will occur in the next few days. Shortly after emergence the flies will lay eggs in the soil next to the sugarbeet plants. Larvae that hatch will then begin feeding on the sugarbeet taproot. Representatives from the Amalgamated Sugar Company say that if you haven?t yet applied a treatment for sugarbeet root maggot, now is the time to do so. Consult your crop advisor or field representative for treatment options.

Cutworms in sugarbeets

Sugarbeets    none

Posted on: April 3, 2003 by Jerry Neufeld

Terry Cane from Amalgamated Sugar Company is finding cutworms in sugarbeet fields south of Nampa. Cutworm problems tend to be worse in fields that have a lot of surface residue (e.g. wheat or mint stubble). Contact your sugar company field representative if you suspect cutworms and/or have questions.

sugarbeet root aphid

Sugarbeets    none

Posted on: August 26, 2002 by Greg Lierman and Lynn Jensen

An infestation of sugarbeet root aphid has been identified on a field near Cairo Junction. There are currently no registered insecticides to control this pest. Field personnel and growers should be on the lookout for this pest so that actual acreage can be documented, and a section 18 request submitted to the ODA if warrented.

powdery mildew in sugarbeets

Sugarbeets    none

Posted on: July 12, 2002 by Jerry Neufeld

Powdery mildew has been found in a sugarbeet field east of Notus. Amalgamated Sugar Company provided this information.

Powdery Mildew in Sugarbeets

Sugarbeets    none

Posted on: July 9, 2002 by Jerry Neufeld

Agronomists from the Amalgamated Sugar Company have found Powdery Mildew in sugarbeet fields in the Ontario area. If you are planning to apply a preventative treatment for Powdery Mildew you may want to scout your fields for Black Bean Aphid prior to the treatment. Both treatments can be applied together if necessary. If more than one treatment per year is used, remember to alternate active ingredients since powdery mildew can build up chemical resistance quickly.

Black Bean Aphid in Sugarbeets

Sugarbeets    none

Posted on: July 9, 2002 by Jerry Neufeld

Black Bean Aphids have been found in sugarbeet fields south of Nampa in numbers requiring treatment. Aphids can be found in the center of the whorl of sugarbeet leaves. This information provided by Landview Fertilizer.

curlytop in sugarbeets

Sugarbeets    All Locations

Posted on: June 6, 2002 by Jerry Neufeld

Curlytop virus has been found in sugarbeet fields in several locations around the Treasure Valley. Amalgamated Sugar Company is reporting that the virus is not widespread. Contact your field representative if you have suspect fields.

root maggots

Sugarbeets    none

Posted on: June 6, 2002 by Jerry Neufeld

Amalgamated Sugar Company is reporting that a few sugarbeet root maggots are being found in fields in the Parma, Notus, Wilder area. Watch for these insects as insecticides applied at planting may be losing effectiveness.

Sugarbeet Root Maggot

Sugarbeets    All Locations

Posted on: May 23, 2002 by Jerry Neufeld

According to the sugarbeet root maggot growing degree day model developed by Dr. Ed Bechinski from the U of Idaho, we accumulated 360 growing degree days as of May 13, 2002. For the past 7-10 days overwintering root maggot pupa have been emerging as adults and flying. Now is the time to be on the lookout for maggots feeding on sugarbeet roots, especially in replanted fields. Terry Cane from The Amalgamated Sugar Company has already confirmed the siting of adult root maggot flies.

Sugarbeet Leafhopper

Sugarbeets    All Locations

Posted on: May 17, 2002 by Jerry Neufeld

Terry Cane from the Amalgamated Sugar Company is reporting that sugarbeet leafhoppers have been found in sugarbeet fields at several locations across the Treasure Valley in Idaho and Oregon. Leafhoppers are vectors of the curly top virus. Call your field representative from TASCO for more information.

sugarbeet root maggot

Sugarbeets    All Locations

Posted on: May 14, 2002 by Jerry Neufeld

According to the sugarbeet root maggot growing degree day model developed by Dr. Ed Bechinski from the U of Idaho, we have accumulated 360 growing degree days as of May 13, 2002. What this means is that any day now overwintering root maggot pupa will begin to emerge as adults and begin flying. In about 7-10 days maggots will begin feeding on sugarbeet roots. Terry Cane from The Amalgamated Sugar Company has also confirmed the siting of adult root maggot flies. For treatment options see the ?Sugarbeet Root Maggot? reference page.

Black Bean Aphid in Sugarbeets

Sugarbeets    All Locations

Posted on: August 17, 2001 by Jerry Neufeld

Black Bean Aphids have been found in sugarbeet fields in the Star and Eagle areas. If you find these aphids in your sugarbeet fields, contact your field representative from the Amalgamated Sugar Company about your treatment options.

powdery mildew in sugarbeets

Sugarbeets    All Locations

Posted on: August 16, 2001 by Jerry Neufeld

Amalgamated Sugar Company is reporting powdery mildew is being found in sugarbeet fields in a widespread area around Eagle, Notus, Wilder and Emmett.

Powdery mildew on sugarbeets

Sugarbeets    All Locations

Posted on: July 10, 2001 by Bob HuffakerBen Simko

Powdery mildew is showing up on sugarbeets in the Treasure Valley. Remember that Larado has recieved a section 18 label for Idaho and Oregon. This alert was submitted once, but at least some people did not recieve it, so it is being resubmitted.

Powdery mildew on sugarbeets

Sugarbeets    All Locations

Posted on: July 10, 2001 by Bob Huffaker

Powdery mildew has been found on sugarbeets in the Valley. Remember that Larado has been cleared for use in both Idaho and Oregon.

sugarbeet root maggots

Sugarbeets    none

Sugarbeet Root Maggot

Posted on: June 8, 2001 by Jerry Neufeld

Sugarbeet root maggots are invading fields in the following areas: 1)Notus, 2) South of Owyhee River in Oregon, 3)Parma/New Acres. Amalgamated Sugar Company Representatives say it is the worst infestation in many years.

Sugarbeet Root Maggot

Sugarbeets    none

Posted on: June 5, 2001 by Jerry Neufeld

Sugarbeet root maggot feeding is taking place in fields south of Nampa. Problem is worse in fields that have been replanted. Phil Allison from Producers Supply Coop and Eddie Martineau are postulating that in the replanted fields one of two things may be happening. 1) the band of insecticide that was used at planting was disturbed during the replanting process and effectively diluted; 2) the replanted seeds were not placed back into the original band of insectcide. Some field investigations between fields that weren't replanted and fields that were replanted appears to support this. Now is the time to closely watch your replanted sugarbeet fields for sugarbeet root maggot.

Sugarbeet root maggot

Sugarbeets    none

Posted on: June 5, 2001 by Bruce Hunter

There have been a number of fields in the Nyssa area with root maggot problems. Some of these fields had an at planting insecticide application, but poor spring moisture failed to activate the materials. Furadan is being applied as a rescue treatment.

Sugarbeet Root Maggot

Sugarbeets    none

Posted on: June 1, 2001 by Jerry Neufeld

Sugarbeet Root Maggots are feeding on beets in many fields south of Nampa. Problem seems to be most severe in fields that were replanted due to the frost. Information provided be Producers Supply Coop.

Sugarbeet Cutworms

Sugarbeets    none

Posted on: May 7, 2001 by Jerry Neufeld

Cutworms are invading fields a few miles east of Notus. Worms are 1/2 to 2 inches long. If you see a lot of skips you may want to look closer for cutworms. Information provided by Amalgamated Sugar Company.

Cutworms

Sugarbeets    none

Posted on: May 3, 2001 by Lynn Jensen

There has been a report of cutworms infesting a sugarbeet field on the Oregon Slope.

Cutworms in Sugarbeets

Sugarbeets    none

Posted on: April 6, 2001 by Jerry Neufeld

Cutworms are starting to damage sugarbeet fields in Gem County about 8 miles northwest of Emmett. At the present time most worms are approximately 1/4 inch long.

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