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Ag Talk Tuesday - Blackfoot, ID Aug 7
All Crops Eastern Idaho
Posted on: August 6, 2018 by Juliet Marshall
Greetings:
Please join University of Idaho Extension personnel and fellow growers, fieldmen, agronomists, and industry reps to discuss current issues in crop production. This event is held periodically on selected Tuesdays at various locations across eastern and southeastern Idaho throughout the growing season, over breakfast or lunch.
The next event will be August 7, 7AM to 8:30AM, at Idaho AgCredit (188 West Judicial, Blackfoot; Tel: 208-785-1510; in the Conference Room). Topics will include (but are not limited to) vine kill options, harvest update, and an update on the UofI Spore Trap Network. Breakfast items will be provided and are sponsored by Idaho AgCredit. A flyer is attached for your convenience. Please feel free to distribute it to whomever you think may be interested.
Please RSVP by calling 208-529-8376 or emailing one of the organizers:
Kasia Duellman, UofI Extension Seed Potato Specialist, kduellman@uidaho.edu
Pam Hutchinson, UofI Extension Weed Specialist, phutch@uidaho.edu
Juliet Marshall, UofI Extension Cereals Specialist, jmarshall@uidaho.edu
Psyllid update 3 August 2018
Potato All Locations
potato psyllids
Posted on: August 3, 2018 by Erik Wenninger
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (12 fields), Cassia (1 field), Jerome (1 field), Payette (1 field), and Twin Falls (2 fields).
This week, we collected 32 psyllids from sticky cards (across 11 light sites and 6 intense sites).
We had traps deployed in all 96 of the 96 fields (100%) monitored this year and found psyllids in 17 of the monitored fields (17.7%).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Psyllid numbers continue to be relatively low thus far this year. With only two Lso-positive psyllids found to date, percent incidence is currently lower than what has typically been found during most previous years.
Nevertheless, we urge growers and crop consultants to have an IPM program in place.
Included on the PNW Pest Alert version of this update (http://www.pnwpestalert.net/) is a “heat map” of this week’s results (only for the western half of the state; we captured only one psyllid in the eastern half this week). “Heat maps” describe predicted psyllid densities across the landscape, based on our trap counts and on predictive models developed over six years of psyllid monitoring in Idaho. These maps, developed in collaboration with WSU, should be used as a guideline, but not a definitive count of the number of insects in any given field at any given point in time. “Low,” “Moderate,” “High,” and “Very High” designations are arbitrary categories that illustrate relative abundance and should not be used as “thresholds.” More details on the “heat maps” can be found in Potato Progress Volume XVII, Number 2, 15 February 2017.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
corn earworm counts 7/30/28
Corn Treasure Valley
corn earworm
Posted on: July 30, 2018 by Jerry Neufeld
Click on the pdf below for the latest corn earworm moth counts. CEW pressure still seems to be fairly light.
Psyllid update July 27, 2018
Potato All Locations
Potato Psyllid
Posted on: July 27, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (11 fields), Cassia (1 field), Minidoka (1 field), Payette (1 field), and Twin Falls (1 field).
This week, we collected 30 psyllids from sticky cards (across 13 light sites and 2 intense sites).
We had traps deployed in 96 of the estimated 96 fields (100%) monitored this year and found psyllids in 15 of the monitored fields (19.8%). However, we are still waiting to receive cards from 13 sites.
Testing of last week’s psyllids for Lso has been delayed due to the Potato Association of America meeting this week.
Psyllid numbers remain relatively low thus far this year. With two Lso-positive psyllids found to date, percent incidence is similar to what has typically been found during most previous years.
Nevertheless, we urge growers and crop consultants to have an IPM program in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
corn earworm counts 7/25/28
Corn Treasure Valley
corn earworm
Posted on: July 25, 2018 by Jerry Neufeld
Below are the corn earworm counts for 7/25/18 for the Treasure Valley. There does not appear to by very many corn earworm moths around at the moment.
Location 7/25/18
South of Caldwell 0
West of Kuna 2
North of Melba 0
SW of Nampa 5
South of Homedale 1
West of Greenleaf 1
NW of Wilder 0
East of Notus 0
Psyllid update July 20, 2018
Potato All Locations
Potato Psyllid
Posted on: July 20, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (10 fields), Cassia (3 fields), Elmore (1 field), Minidoka (2 fields), Payette (1 field), and Twin Falls (2 fields).
This week, we collected 29 psyllids from sticky cards (20 light sites and 9 intense sites).
We had traps deployed in 93 of the estimated 96 fields (96%) that will be monitored this year and found psyllids in 19 of the monitored fields (20.4%).
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Psyllid numbers remain relatively low thus far this year. With two Lso-positive psyllids found to date, percent incidence is similar to what has typically been found during most previous years.
Nevertheless, we urge growers and crop consultants to have an IPM program in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Ag Talk Tuesday!
All Crops Eastern Idaho
ATT
Posted on: July 16, 2018 by Juliet Marshall
Please join U of I Extension Specialists at Ag Talk Tuesday July 17 in Idaho Falls at Papa Tom's from 11:30AM to 1:00PM, for a no-host lunch to discuss current crop problems.
Directions to Papa Tom's: https://www.google.com/maps/dir/''/papa+tom's+idaho+falls/@43.4807967,-112.0713223,12z/data=!4m8!4m7!1m0!1m5!1m1!1s0x53545edb01d42491:0xfd4d454007e025a9!2m2!1d-112.0012825!2d43.4808181
In addition to current crop problems, Dr. Pamela Hutchinson will present information on post-emergence weed control, and I'll provide an update on the UofI Spore Trap Network.
Please RSVP to one of the co-hosts if you plan to attend :
Kasia Duellman - kduellman@uidaho.edu
Pamela Hutchinson - phutch@uidaho.edu
Juliet Marshall - jmarshall@uidaho.edu
Or you can call 208-529-8376.
Note: There will be no ATT on 7/24 or 7/31. Additional ATT meetings will be scheduled for August (8/7 and 8/21 currently) and September.
We hope you can join us - your insight and observations add value to these meetings, to everyone's benefit.
Thrips Update 7/13/18
Onion Treasure Valley
thrips
Posted on: July 16, 2018 by Jerry Neufeld
Stuart Reitz, from OSU Malheur County Extension, is monitoring Treasure Valley onion fields for thrips this summer. Click on the pdf below for an update on this project as of 7/13/18.
Second Lso-positive potato psyllid this year
Potato All Locations
Potato Psyllid
Posted on: July 13, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (8 fields), Cassia (3 fields), Owyhee (1 field), Jerome (2 fields), and Twin Falls (3 fields).
This week, we collected 31 psyllids from sticky cards (13 light sites and 4 intense sites).
We had traps deployed in 92 of the estimated 96 fields (96%) that will be monitored this year and found psyllids in 17 of the monitored fields (18.5%).
One psyllid collected last week in Canyon County tested positive for Lso (liberibacter), the bacterium that causes zebra chip.
Psyllid numbers remain relatively low thus far this year. With two Lso-positive psyllids found to date, percent incidence is similar to what has typically been found during most previous years.
Nevertheless, we urge growers and crop consultants to have an IPM program in place.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Fusarium Head Blight in winter wheat
Small Grains All Locations
Fusarium head blight
Posted on: July 11, 2018 by Juliet Marshall
Fusarium head blight (FHB or head scab) is being found in winter wheat and spring wheat.
Fields throughout southern and southeast Idaho are being affected by FHB, everywhere from Glenn’s Ferry through Firth. Some winter wheat fields have white heads caused by take all as well as partial to whole heads bleached by FHB. While it is unlikely that there are any fields still in the vulnerable stages (flowering), at risk fields should be protected with appropriate fungicide application. Fields should still be scouted and infected grain fields identified prior to harvest. DON (deoxynivalenol or vomitoxin) contaminated, infected seed and tombstone kernels can be reduced by increasing the fan speeds on the combine. This can significantly reduce dockage and rejection at the elevator.
corn earworm - 2018
Corn Treasure Valley
corn earworm
Posted on: July 11, 2018 by Jerry Neufeld
I am once again collaborating with Crookham Seed Co. on a project to trap corn earworm moths. Traps will be set out in corn fields at various locations near Dry Lake, Kuna, Melba, Middleton, Wilder, Homedale, and Caldwell. I will check the traps every few days and post the moth counts to this website.
The online Phenology and Degree Day Model (GDD) from Oregon State University is being used to estimate when the summer generation of corn earworm moths will emerge. This is the generation of moths that lay eggs in corn that is silking at the time when they emerge. The link to the GDD calculator for Corn Earworm is below.
The GDD model uses January 1 as a biofix, 55 and 92 as the temperature parameters and predicts the summer moths will emerge after 1300 GDD. These moths will then begin laying eggs in fresh corn silk. This model also estimates the eggs will hatch and larvae will begin feeding on corn ears 73 GDD later. According to this model, we will reach 1300 GDD in the Caldwell area about July 22, and will reach 1300 GDD in the Parma area about July 20. Egg laying in most, if not all, Treasure Valley locations will take place in this time frame. Larval feeding will begin 3 to 4 days later.
Traps will go out next week. The first moth counts will be posted a few days after the traps are set out.
The links below will take you to the websites where you can use the growing degree day model and also view various treatment methods based on the type of corn that you are growing.
» https://pnwhandbooks.org/insect/crop-pests?combine=earworm
U of Idaho Ag Talk Tuesday
All Crops Eastern Idaho
Posted on: July 9, 2018 by Jerry Neufeld
University of Idaho Extension Specialist, Dr. Kasia Duellman is inviting you to join her and other UofI Extension Specialists at the next UofI Ag Talk Tuesday which is July
10, 11:30 am to 1:00 pm at Morey's Steakhouse in Burley. This is an opportunity for informal discussion on current crop production problems.
The next UofI Ag Talk Tuesday will be held on July 17 at Papa Tom's in Idaho Falls, 11:30 am to 1:00 pm.
Malheur Experiment Station Field Day July 11
All Crops All Locations
Posted on: July 9, 2018 by Janet Jones
You are invited to the Malheur Experiment Station Summer Farm Festival and Annual Field Day!
Place: Malheur Experiment Station, 595 Onion Ave, Ontario, OR
Date: Wednesday, July 11, 2018
Registration starts at 8:00am with coffee and donuts
Click on the PDF below for the tour descriptions and schedule.
Also featured:
- Agricultural trade show booths!
- Program for youth starting at 9:30!
- Different events and contests with prizes!
A complimentary lunch will be served at noon.
For more information call Jan Jones at (541) 889-2174 or email janet.jones@oregonstate.edu.
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.
» https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-cercospora-leaf-spot
» https://pnwhandbooks.org/insect/agronomic/sugar-beet/sugar-beet-aphid
2018 Miller Research Potato Pest Management Field Day
All Crops All Locations
Posted on: July 6, 2018 by Jeff Miller
Miller Research will be holding its annual pest management field day on Tuesday, August 14 at the Miller Research facility located near Acequia, ID (426 E 200 N). A short presentation will be given in the office followed by a tour of the research plots. Trials to be highlighted include research on pink rot and Pythium leak, Rhizoctonia canker and Fusarium dry rot, fumigation methods for Verticillium control, foliar disease management, virus symptoms in the field and storage, and potato bruise management.
The presentations will focus on fungicide management of diseases and will highlight research which has been funded by the Pacific Northwest Potato Research Consortium. Three (3) ISDA pesticide recertification credits and three CCA (Pest Management) credits have been requested.
The tour will run from 9:00 to 12:00. Lunch will then be provided.
There is no cost to attend, but please respond to Cheryn Clayton by August 6 at (208) 531-5124 or cheryn@millerresearch.com if you are planning on attending.
» http://www.millerresearch.com/alerts/research-news/item/66-potato-disease-tour
First Lso-positive potato psyllid
Potato All Locations
Potato Psyllid
Posted on: July 6, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (4 fields), Owyhee (2 fields), Gooding (1 field), and Twin Falls (1 field).
This week, we collected 13 psyllids from sticky cards (7 light sites and 1 intense site).
We had traps deployed in 93 of the estimated 97 fields (95%) that will be monitored this year and found psyllids in 8 of the monitored fields (8.6%). However, we are still waiting to receive cards from 8 sites.
One psyllid collected last week in Canyon County tested positive for Lso (liberibacter), the bacterium that causes zebra chip.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Herbicide Damage to non target plants.
Landscape and Garden All Locations
Herbicide damage
Posted on: July 3, 2018 by Rich Guggenheim
We are seeing considerable damage to plants consistent with broad leaf herbicides being misapplied. Always read and follow all label instructions. It is against the law to use pesticides in a manner inconsistent with label instructions.
Click the links below to learn how to diagnose and prevent herbicide damage.
» https://www.extension.purdue.edu/extmedia/id/id_184_w.pdf
» http://herbicidesymptoms.ipm.ucanr.edu/HerbicideDamage/
» https://hortnews.extension.iastate.edu/2018/06/preventing-herbicide-injury-landscape
Curly Top Virus in Solanacea Plants
Landscape and Garden All Locations
BCTV
Posted on: July 2, 2018 by Rich Guggenheim
BCTV affects Beets, tomatoes, peppers, beans, potatoes, spinach, cucurbits, many ornamentals, and weeds such as Russian thistle (tumbleweed) and mustard. It is spread by the Beet leafhopper (Circulifer tenellus). There are no chemicals available for controlling the virus. Management foci include:
Plant virus-free transplants
Control weeds and insects
Remove infected plants
Cage young plants in home gardens. Good sanitation practices, such as weed and insect control, are also essential in limiting the occurrence of the disease. Home gardeners may also consider planting susceptible hosts, such as tomatoes and peppers, in a slightly shaded part of the garden, as leafhoppers prefer to feed in sunny locations
» http://utahpests.usu.edu/uppdl/files-ou/factsheet/curly-top-tomato08.pdf
» http://ipm.ucanr.edu/PMG/r783102011.html
Squash Bug confirmed in 2018 squash.
Landscape and Garden All Locations
Anasa tristis
Posted on: June 30, 2018 by Rich Guggenheim
Squash bugs have been confirmed in the Treasure Valley.
It attacks all cucurbits and vine crops but is most damaging to squashes and pumpkins. The insect has a disagreeable odor when crushed and is one of many insects known by the nickname "stink bug."
They may be difficult to see because their color matches the soil and because they are usually hiding under the vines, leaves or clods of dirt. The adults feed on sap from the plant leaves as they lay clusters of a dozen of more, large, brick-red to yellow-brown eggs on the lower sides of the leaves.
Handpick and discard egg clusters and nymphs as they appear. Use garden insecticides such as Sevin, permethrin or insecticidal soap according to label directions. Sprays are generally more effective than dusts, but must be reapplied frequently. Avoid spraying plants in bloom. If spraying during bloom is necessary, spray at night after honey bees have quit foraging for the day.
» https://extension.usu.edu/juab/ou-files/ENT-120-08.pdf
» http://extension.colostate.edu/topic-areas/insects/squash-bug-management-in-home-gardens-5-609/
Psyllid abundance remains relatively low
Potato All Locations
Potato Psyllid
Posted on: June 29, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (6 fields), Owyhee (1 field), and Twin Falls (2 fields).
This week, we collected 16 psyllids from sticky cards (8 light sites and 1 intense site).
We had traps deployed in 85 of the estimated 97 fields (87%) that will be monitored this year and found psyllids in 9 of the monitored fields (10.5%). However, we are still waiting to receive cards from 4 sites.
All psyllids collected last week tested negative for Lso (liberibacter), the bacterium that causes zebra chip.
Thus far, psyllid abundance has been relatively low this year; however, potato psyllid abundance typically increases during July through August.
More information can be found here: http://www.uidaho.edu/cals/potatoes/news
--Click on the links under “Updated weekly reports” for details on trap captures in Intense and Light sites.
--Click on the “Psyllid Management” link on the left panel for information on psyllid and zebra chip biology and management.
Peach Tree Borer 2018
Landscape and Garden All Locations
Peach Tree Borer
Posted on: June 29, 2018 by Dian Roberson
We have been finding Peach Tree Borers in our traps! They will attack peach, cherry, plum, and other stone fruits. It is the larva that does the most damage, feeding on the tree roots. Check out the information below!
» https://pnwhandbooks.org/insect/tree-fruit/peach-nectarine/peach-nectarine-peachtree-borer
» http://extension.colostate.edu/topic-areas/insects/peach-tree-borer-5-566/
University of Idaho onion workshop and field tour
Onion Treasure Valley
Posted on: June 27, 2018 by Jerry Neufeld
The University of Idaho is hosting an onion workshop and field tour on July 13 at the Parma R and E Center. You are encouraged to RSVP since seating in limited. Click on the pdf below for more information.
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.
» https://pnwhandbooks.org/insect/agronomic/sugar-beet/sugar-beet-looper
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.
» https://pnwhandbooks.org/plantdisease/host-disease/sugar-beet-beta-vulgaris-powdery-mildew
