Search Results
Your search for "All Alerts" in All Alerts
yielded 2129 results.
Swipe Left or Right to navigate Alerts
spotted wing drosophila
Small Fruits Treasure Valley
spotted wing drosophila
Posted on: September 26, 2013 by Jerry Neufeld
Spotted Wing Drosophila Southwest Idaho update
Spotted wing drosophila (SWD), Drosophila suzukii, is an invasive insect pest of economically valuable small fruit and tree fruit crops that was first identified in the Western United States in late 2008. Since July 2009, it has been found in Florida, Oregon and Washington and now appears to be established in many Pacific Northwest fruit crops. Spotted wing drosophila was confirmed in samples from Nez Pierce, Latah and Canyon Counties., ID in August of 2012, and in June of 2013 SWD adults were collected by a crop consultant from traps in an orchard near Fruitland, ID. The presence of the flies in samples this early in the 2013 season indicates the flies may have overwintered in southwest Idaho in 2012.
We have continued to find SWD throughout the summer in traps placed in the vicinity of southwest Idaho tree fruit and berry crops. Numbers of SWD in traps have increased dramatically over the last fdrew weeks and we have reared SWD adults from larvae found in raspberries, grapes and peaches. Spotted wing drosophila is a temperate vinegar or pomace fly native to Southeast Asia preferring temperatures of 20-30 °C (68-86 °F). The cool, wet weather we are now experiencing is ideal for SWD, and in combination with the presence of ripe, damaged and rotting fruit is likely contributing to the observed increase in the SWD population in southwest Idaho.
Spotted wing drosophila differs from the common drosophila species such as Drosophila melanogaster that occur in Pacific Northwest fruit crops in that it can attack healthy, undamaged ripening fruit; the common species will only attack overripe, damaged, or dropped fruit. Drosophila larvae in sound ripening fruit are likely to be spotted wing drosophila. Spotted wing drosophila have the potential to be a very serious pest of tree and small fruits. Commercial fruit producers and home gardeners should take all appropriate management efforts for this pest, including:
Monitoring: check fruit regularly for ripeness, damage and presence of SWD. Commercial or home traps are useful for monitoring for SWD adults, and may be useful for control.
Sanitation: remove and destroy infested and overripe or damage fruit
Early harvest: harvest as early as possible to reduce exposure to SWD
Netting: while not practical for large commercial operations, netting may be useful small fruits, and small or single trees or tree branches.
Pesticides: This pest is new and limited information is available on pesticides for control of SWD, but sprays must be timed to kill adults before they lay eggs in fruit.
Please see the attached information on identification, biology, monitoring and management of spotted wing drosophila for additional and specific information. Because of the relatively recent nature of this introduction, the provided information is subject to change as we learn more about the biology of this pest.
Other Resources:
Identification and Management resources
Identification and biology:
http://spottedwing.org/
Identification card SWD males: http://www.ipm.ucdavis.edu/PDF/PMG/SWD_IDCard.pdf
Identification card SWD females: http://www.ipm.ucdavis.edu/PDF/PMG/SWD-ID-Dsuzukii.pdf
Monitoring, identification and management including trapping information:
http://pnwhandbooks.org/insect/pnw-insect-management-handbook/emerging-pest-spotted-wing-drosophila also see appropriate sections for each commodity, e.g. raspberry, from this list:
http://pnwhandbooks.org/insect/search/content/spotted%20wing%20Drosophila
http://jenny.tfrec.wsu.edu/opm/displaySpecies.php?pn=165
http://ipm.wsu.edu/small/pdf/Concord_Grape_SWD_Bulletin_v1_02.pdf
http://extension.usu.edu/files/publications/publication/ENT-140-10.pdf
http://www.ipm.ucdavis.edu/EXOTIC/drosophila.html
YOU ALSO MAY REPORT SUSPECT SWD INFESTATIONS:
Preserve specimens in alcohol (rubbing alcohol is fine) and send to:
Idaho State Department of Agriculture, Plant Industries Division, P.O. Box 790 Boise, ID 83701. Please include your name, address and phone number or you may call (208) 332-8620 to report the possible find.
Or:
Jim Barbour, University of Idaho, Parma Research and Extension Center, 29603 U of I Lane, Parma, ID 83660. Or call (208) 722-6701 to report the find or for more information on this insect.
Samples also may be submitted to your County Educators at your local University of Idaho Cooperative Extension office.
potato psyllid & ZC update
Potato All Locations
potato psyllids and ZC
Posted on: September 21, 2013 by Erik Wenninger
More fields have been vine killed this week, but potato psyllid captures remain at similar levels relative to recent weeks. We are still waiting on some Lso testing results, but so far no new psyllids have tested positive for Lso, the bacterium that causes ZC. A previously reported psyllid in Power County from August 28 has tested negative for Lso, but one new psyllid was captured last week in Power County and remains to be tested. As stated last week, we will stop monitoring most individual fields as they undergo vine kill; however, we will continue sticky card trapping on some fields for a few weeks after vine kill in order to get a better understanding of late-season and post-season psyllid activity.
Detailed monitoring results can be found here:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
potato psyllid and ZC update - nymphs found in Twin Falls Co
Potato All Locations
potato psyllids and ZC
Posted on: September 13, 2013 by Erik Wenninger
Potato psyllid captures remain at similar levels relative to recent weeks. All trap data that we have received up to this point are up to date and can be viewed at the link below. For the first time this year within our monitoring program, we have found psyllid nymphs on foliage in a commercial potato field (two nymphs across 100 leaves sampled from a field in Twin Falls County). We are still waiting on some Lso testing results, but so far no new psyllids have tested positive for Lso, the bacterium that causes ZC. We will stop monitoring most individual fields as they undergo vine kill; however, we will continue sticky card trapping on some fields for a few weeks after vine kill in order to get a better understanding of late-season and post-season psyllid activity.
Detailed monitoring results can be found here:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
Planting Tips for Winter Cereals - BYDV
Small Grains All Locations
BYDV and aphids
Posted on: September 12, 2013 by Juliet Marshall
Planting winter cereals in Idaho– protecting your investment.
University of Idaho. Pest alert, September 12, 2013.
Dr. Juliet M. Marshall, Cereal Agronomy and Pathology
Dr. Arash Rashed, Entomology
Over the past several years our winter cereal production, in Idaho, has been negatively impacted with various arthropod pests and disease, including Barley Yellow Dwarf Virus (BYDV).
Below, are a few suggestions made to improve the overall health of our winter crops and to reduce the risk of significant yield loss due to disease problems:
Control volunteers and eliminate “green bridges”. Volunteer wheat and barley, as well as wild grasses, can host various pests of small grains, which may later invade your newly emerged winter crop. Break the green bridge by removing volunteers and having at least two weeks where there is no available host material. Corn is also a host for some insects and diseases that will affect cereals. For instance, aphids can transmit BYD virus from corn, which can harbor the virus but not be affected by it. Some evidence suggests that insecticide sprays in corn and in grassy borders would be effective in reducing BYDV incidence.
Small grains and other grasses (including grassy weeds) are known to host various cereal aphids (i.e. bird cherry-oat aphid, corn leaf aphid, and English grain aphid), and in the case of BYDV, the virus itself. Thus, crops like beets and alfalfa are not expected to act as a source of BYDV. If BYD virus was in your barley planted near beets last year, you likely had volunteers and grassy field borders as the source of infection. Fields could also be infected by newly arriving virus-carrying aphids.
Use treated seed. Insecticidal seed treatments can reduce aphid colonization of the crop, and subsequently, the secondary spread of BYDV. However, you may still get some virus transmission until the aphids ingest lethal levels of insecticides. Insecticides will also reduce the impact of wireworm feeding. Fungicides are also important for reducing soil and seed-borne diseases and early infection of seedling diseases.
Use resistant varieties. The most effective means to reduce diseases (stripe rust, for example) is to select varieties with resistance. For some diseases, such as BYDV, we don’t have wheat varieties with known levels of resistance to recommend at this point.
Planting date. Follow recommended planting dates for winter wheat and barley, and avoid early planting to minimize the exposure of emerging plants and young seedlings to virus-carrying aphids and other pests.
Seeding depth. In our dryland areas, we have had enough rainfall to replenish soil moisture in the seeding zone. With adequate moisture for rapid germination, you should not be planting deep – this year plant shallow – 1 to 1.5 inches will promote rapid emergence, good stand establishment and will help plants to withstand soilborne diseases such as Fusarium dryland crown rot. Deep planting will force the seed to expend more energy getting to the soil surface, weakening the seedling. It will also increase the chances of crusting prior to emergence. Under irrigation, the same practices apply – with adequate moisture, never plant deeper than 1.5 inches.
Seeding rate should be calculated based on seeds per acre, not lbs/A. Seed irrigated crops at 1 to 1.2 million seeds per acre when planting in our recommended planting window, as winter cereals will tiller adequately. Obviously, if you have to seed later following potatoes or sugar beets, there is less time for plant development and you should increase your seeding rate. If you have a very rough seed bed, increasing the seeding rate will also improve uniform plant stands. Under dryland conditions, reduce the seeding rate significantly, to 600,000 seeds/A for winter barley and 700,000 seeds/A for winter wheat.
Feed the seed. Use phosphorus to promote good root development. Starter fertilizers go a long way to promoting healthy crops, even when soil tests indicate adequate phosphorus levels. At high soil pH, phosphorus becomes unavailable, so even 10-15 lbs in furrow or below the seed can make considerable differences in root development and plant health.
Feed the plant. Soil test to determine available nutrients. Fertilize for expected yield. Consider adding 10-20 lbs/A KCl for straw strength and disease reduction. Sulfur is very important for end-use quality, and 20-40 lbs of sulfate per acre is strongly recommended for protein quality of hard red and hard white winter wheat.
Scout for problems. Monitor crops as they are growing for symptoms of nutrient deficiencies, weed infestations, insect problems, and disease incidence, and treat according to recommendations. The faster your remedy yield-robbing maladies, the greater your yield potential.
As a general rule, agronomic and cultural methods must be practiced, not only to reduce immediate risk, but also to help to achieve a sustainable pest management in the long run.
Idaho Association of Plant Protection Annual Meeting
All Crops All Locations
Posted on: September 11, 2013 by Jeff Miller
The Idaho Association of Plant Protection is holding its annual meeting November 5-6 at the Sawtooth Best Western Inn in Jerome. Please see the attached memorandum for more information. Please feel free to share this invitation with anyone who may be interested.
Those interesting in presenting can fill in the attached form and return it to either Jeff Miller (jeff@millerresearch.com) or Oliver Neher (o.t.neher@gmail.com). Please contact either Jeff or Oliver if you have any additional questions.
potato psyllid & ZC update
Potato All Locations
potato psyllids and ZC
Posted on: September 7, 2013 by Erik Wenninger
Across the U-Idaho monitoring program, psyllid captures this week generally have remained at similar levels (relative to recent weeks) or in some cases slightly higher levels. A few traps remain to be read from this week’s sampling; however, thus far there have been no psyllids found in counties from which we had not previously found psyllids. We are still waiting on Lso testing results, but so far no new psyllids have tested positive for Lso, the bacterium that causes ZC.
Detailed monitoring results (which will be updated as results continue to come in) can be found here:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
2014 Idaho Potato Conference
Potato All Locations
Posted on: September 5, 2013 by Nora Olsen
We are requesting suggested topics for the 2014 Idaho Potato Conference that will take place in Pocatello, ID on January 22nd and 23rd.
Please provide your ideas for potential workshops and presentations for this year's conference to Phil Nolte (pnolte@uidaho.edu) and Nora Olsen (norao@uidaho.edu) by October 7th.
Additional details regarding the conference can be found at http://web.cals.uidaho.edu/potatoconference/.
unusable pesticide disposal pickup
Announcements All Locations
Posted on: September 5, 2013 by Jerry Neufeld
Victor Mason at the Idaho State Department of Agriculture is announcing the fall 2013 schedule for the statewide pesticide disposal program. Click on the pdf below to find a location near you.
First zebra chip positive plant in Idaho this year
Potato All Locations
potato psyllids and ZC
Posted on: August 30, 2013 by Erik Wenninger
Last week we reported finding a plant at the Kimberly R&E center that exhibited classic zebra chip symptoms. A tuber sample from this plant tested positive for Lso, the zebra chip pathogen. This represents the first confirmed case of a zebra chip positive plant in Idaho this year. The potato was infected with type B Lso; all previous samples from Idaho were type A. There are two geographically based biotypes of Lso that infect potato (A and B); differences between the biotypes in relation to biology and management remain to be fully clarified.
We continue to catch psyllids on sticky traps across the U-Idaho monitoring program. A few traps remain to be read from this week’s sampling; however, thus far there have been no psyllids found in counties from which we had not previously found psyllids. Psyllid numbers are on the rise on some fields, notably in Canyon County.
More potato psyllids have tested positive for Lso. Lso-positive psyllids were found during the week of August 12 in the following counties: Canyon, Ada, Twin Falls, and Minidoka. Thus far, no Lso-positive psyllids have been found in eastern Idaho, though an additional psyllid was found this week in Power County that remains to be tested.
Detailed monitoring results (which will be updated as results continue to come in) can be found here:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
» http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
Induced Resistance as a Component of Potato Disease Manageme
All Crops All Locations
Field day
Posted on: August 26, 2013 by Nora Olsen
Induced Resistance as a Component of Potato Disease Management, Plus an Update on Potato Psyllid/Zebra Chip in Idaho
Wednesday, September 4
University of Idaho Aberdeen R&E Center
Tour starts at 10 am (optional afternoon tour of additional trials)
Free lunch provided by Certis
RSVP by Monday, September 2 with jmiller@pesticide.org or 208-850-6504
A September 4 field day will feature the use of induced resistance as part of an IPM program for disease management in potatoes. The University of Idaho, Certis and the Northwest Center for Alternatives to Pesticides invite growers and crop consultants to attend a tour of trials at the University of Idaho Aberdeen Research & Extension Center.
The field day will feature trials of Bacillus mycoides isolate J (BmJ), a naturally occurring soil bacterium. It was discovered in sugar beets, where it induced the defense response system without causing disease. Since then, BmJ has been shown to induce disease resistance in a variety of crops.
Phill Wharton, University of Idaho plant pathologist, will provide a tour of his potato disease trials. Additional University of Idaho researchers will discus their trials of BmJ for managing Potato Virus Y, as well as provide the latest update on potato psyllid and zebra chip in Idaho.
The tour starts at 10 am. A free lunch will be provided by Certis. RSVP by Monday, September 2 with jmiller@pesticide.org or 208-850-6504. The Aberdeen R&E Center is located at 1693 S 2700 W in Aberdeen, Idaho.
Following lunch, Phill Wharton will offer an optional tour of his additional potato disease field trials.
This field day features work supported by the Idaho State Department Agriculture (2010 Specialty Crop Block Grant) and the Natural Resources Conservation Service, U.S. Department of Agriculture (under number 68-0211-10-030).
Onion Variety Day
Onion Treasure Valley
Posted on: August 26, 2013 by Jerry Neufeld
The OSU Malheur Experiment Station is hosting an Onion Variety Day Tuesday, August 27, 2013. Click on the pdf below for the details.
Late blight
Potato All Locations
Late blight
Posted on: August 23, 2013 by Jeff Miller
Late blight has been positively confirmed in central Bingham County. So far the disease has only been identified in one field. All growers should scout fields (especially areas which remain wet relatively long). Please submit any suspicious samples to the University of Idaho or Miller Research for positive identification.
The web address below links to an article on fungicides for managing potato late blight. Additionally, the attachment below links to a file discussing many aspects of the late blight disease cycle and additional management options.
potato psyllid and ZC update
Potato All Locations
potato psyllids and ZC
Posted on: August 23, 2013 by Erik Wenninger
Today, August 23, at least one plant was observed at the Kimberly Research and Extension Center displaying classic zebra chip foliar and tuber symptoms. Samples are currently being tested for the presence of the Lso bacterium that causes zebra chip. Refer to http://extension.uidaho.edu/kimberly/tag/potato-psyllid-and-zebra-chip/ for additional information on potato psyllids scouting efforts and zebra chip symptom identification.
Potato psyllid numbers on sticky traps continue to rise across the U-Idaho monitoring program. A few traps remain to be read from this week’s sampling; however, thus far there have been no psyllids found in counties from which we had not previously found psyllids. We are still waiting on Lso test results from last week. Detailed monitoring results and management recommendations can always be found here:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
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.
various sugarbeet pests
All Crops 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. TASCO is recommending Lannate and Lorsban as the chemicals of choice to treat these insects. The pre-harvest interval may be an issue to deal with, depending on when you make the treatment. Make sure to read and follow the label instructions.
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. TASCO is recommending lengthening the interval between irrigations and either Headline or Inspire XT for the fungicide treatment. 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 if you have any questions.
Composting Field Day September 10
Tree Fruits All Locations
Posted on: August 19, 2013 by Tony McCammon
This is a FREE workshop! Join us at Rocky Fence Vineyard at 3770 Fuller Rd., Emmett, ID 83617 for a field day demonstrating three different composting techniques applicable to producers of different sizes, how adding carbon sources affect dairy compost quality, how to reduce air emissions from grape, wine, and dairy production, and how to implement composting on your farm.
Topics to be covered during the field day
•Overview of mechanically turned, forced aerated, and passive aerated windrows composting systems.
•Challenges for handling vine prunings and other carbon rich materials and nitrogen rich manures.
•What to do if the compost process doesn’t work as intended. Can I still use it?
•Preliminary results from a University of Idaho Extension year-long study on composting grape vine prunings and dairy manure.
•Field day features work supported by an Idaho Natural Resources Conservation Service, U.S. Department of Agriculture, CIG grant
Parma Idaho Fruit Field Day 2013
Tree Fruits All Locations
Posted on: August 19, 2013 by Tony McCammon
The University of Idaho Annual Fruit Field Day will be held on Friday September 6, 2013 8:30 am to 1:00 pm at the U of I Parma Research and Extension Center Pomology Orchard and Vineyard site, about 4 miles north of Parma, Idaho. The registration will start at 8:30 am and program will start at 9:00 am (sharp). Several cultivars of new table grapes, peaches, nectarines, apples, plums, quince, Asian pears, and other alternative fruits will be presented during the tour. Participants can taste many of these fruits. Highlights
Potato Progress
Announcements All Locations
Posted on: August 19, 2013 by Jerry Neufeld
Attached please find Volume XIII, Number 8.
In view of the recent finds of late blight in the Columbia Basin, Dennis Johnson (Professor of Plant Pathology at WSU) has offered the enclosed article on late blight management. This article is up-to-date and broadly applicable to irrigated potato production. You will also find in this issue some important announcements.
Andy Jensen, Ph.D.
Regional Research Director
For: Potato Commissions of Idaho, Oregon, & Washington
4032 N Ballantyne Ln.
Eagle, ID 83616
Home Office: 208-939-9965
Cell: 509-760-4859
Web: www.nwpotatoresearch.com
potato psyllid and zc update
Potato All Locations
potato psyllids and ZC
Posted on: August 16, 2013 by Erik Wenninger
Potato psyllids were trapped for the first time in eastern Idaho this week, one each in Power and Bingham counties. Psyllids were also trapped for the first time in Minidoka county. Incidence still remains low (less than 2%), as only six psyllids have tested positive for Lso out of the 300 trapped in our monitoring network throughout southern Idaho. To date, psyllids have now been trapped in Owyhee, Canyon, Ada, Elmore, Gooding, Jerome, Twin Falls, Cassia, Minidoka, Power, and Bingham counties. All psyllids collected last week tested negative for Lso, the bacterium that causes zebra chip disease.
Detailed monitoring results and management recommendations can always be found at the link provided below:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
Click on the link(s) below for more information about this pest:
» http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
potato psyllid and zc update
Potato All Locations
potato psyllids and ZC
Posted on: August 9, 2013 by Erik Wenninger
More potato psyllids were trapped this week in potato fields in Owyhee, Canyon, Ada, Elmore, Gooding, Jerome, Twin Falls, and Cassia Counties. Over 200 psyllids have been collected in our monitoring network so far this summer, and only six have tested positive for Lso, the bacterium that causes zebra chip disease. Those six Lso positive psyllids were trapped in Canyon, Jerome, and Twin Falls counties. This is relatively low incidence (less than 3%) compared to last year. All psyllids trapped last week tested negative for Lso.
Detailed monitoring results and management recommendations can always be found at the link provided below:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
» http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
Pesticide Disposal Program
Announcements All Locations
Posted on: August 7, 2013 by Jerry Neufeld
Click on the pdf below for information about the Idaho State Department of Agriculture’s Pesticide Disposal Program at various locations across Idaho starting in September.
potato psyllid and zc update
Potato All Locations
potato psyllids and ZC
Posted on: August 2, 2013 by Erik Wenninger
More potato psyllids were trapped this week in potato fields in Canyon, Ada, Elmore, Gooding, Jerome, Twin Falls and Cassia Counties. Results from last week show three more positives for Lso, the bacterium that causes zebra chip, but incidence of Lso remains low (less than 5%).
Detailed monitoring results and management recommendations can always be found at the link provided below:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
Click on the link(s) below for more information about this pest:
» http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
2013 Miller Research Pest Management Field Day
Potato All Locations
Posted on: August 2, 2013 by Jeff Miller
Miller Research will be holding a pest management field day on Wednesday, 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.
The presentations will focus on cultural and chemical management of diseases. We will discuss strengths and weaknesses of different management approaches. We have been awarded 2 ISDA pesticide recertification credits and 2.5 CCA (Pest Management) credits for this meeting.
Lunch will be served. Please RSVP so that we can plan for the appropriate number of people. Additional information along with a detailed agenda can be found at the link below. There is no cost to attend.
» http://www.millerresearch.com/alerts/research-news/item/43-mr-pest-management-field-day
Food Safety Modernization Act (FSMA) Meeting
All Crops Treasure Valley
Posted on: August 1, 2013 by Stuart Reitz
There will be a meeting with FDA scientists and administrators and state officials on August 12, 2:30 - 4:30 PM at the Four Rivers Cultural Center, 676 SW 5th Ave, Ontario, OR.
This meeting will be to discuss agricultural water in the Treasure Valley in relation to the proposed FSMA produce Rules. FDA officials will discuss the process for applying for possible exemptions / variances to the rule standards.
Growers and shippers are encouraged to attend.
Please see the attached flyer for details on reserving a seat for the meeting.
***There is no Registration Fee for this event***
Please call Malheur County Extension (541-881-1417) for information.
potato psyllid and ZC update
Potato All Locations
potato psyllids and ZC
Posted on: July 26, 2013 by Erik Wenninger
More potato psyllids were trapped this week in potato fields in Canyon, Ada, Elmore, Gooding, Jerome, and Twin Falls Counties. In addition, we trapped our first potato psyllids this week in Owyhee and Minidoka Counties. In addition to the counties listed above, in a previous week we had also captured a psyllid in Cassia County. All the psyllids tested from last week were negative for Lso, the bacterium that causes zebra chip. So far, over 100 potato psyllids have been collected this year in U-Idaho monitoring programs; of the 64 psyllids tested so far, only 3 have been positive for Lso (less than 5% incidence). In contrast, by this time last year roughly 50% of the psyllids collected were positive for Lso. It is important to note, however, that despite finding only a handful of Lso+ psyllids in the Columbian basin last year, zebra chip was still found.
Detailed monitoring results and management recommendations can always be found at the link provided below:
http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
» http://extension.uidaho.edu/kimberly/2013/04/2013-psyllid-updates/
