Crop Alerts
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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
A few more psyllids found in Treasure and Magic Valleys
Potato All Locations
Potato Psyllid
Posted on: June 22, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (3 fields), Jerome (1 field), and Twin Falls (1 field).
This week, we collected 10 psyllid from sticky cards (3 light sites and 2 intense sites).
We had traps deployed in 85 of the estimated 97 fields (87%) that will be monitored this year and found psyllids in 5 of the monitored fields (5.8%). However, we are still waiting to receive cards from 19 sites.
All psyllids collected last week tested negative 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.
UI SNAKE RIVER PEST MANAGEMENT TOURS
All Crops All Locations
Posted on: June 19, 2018 by Jerry Neufeld
The following information is provided by Dr. Pamela Hutchinson, University of Idaho Extension Specialist.
Please mark your calendars and plan to attend the UI Snake River Pest Management Tours. The first one is at Aberdeen on June 26th and the second one is at Kimberly on June 27th. Both field days start at 8:30 am with registration beginning at 8:00.
Aberdeen will feature several weed control trials in potatoes, including targeted herbicide programs in potatoes, Sonalan tank mixtures, and sulfentrazone formulation comparisons. Also, featured are herbicide mechanism of action plots, quinoa herbicide screening and Litchi tomato herbicide management.
At Kimberly, we will look at broadleaf and wild oat control in spring wheat, clover cover crop in wheat, safflower tolerance to sulfentrazone, weed control comparison between direct seeded and conventional tillage sugar beet, potato psyllid, Colorado potato beetle, aphid and wireworm management in potato, an update on the spore trapping network for early plant disease detection in potato, dry bean, sugar beet, and small grains, response of sugar beet to herbicide safener, beet leafminer control in sugar beet, weed control in dry bean, weed control in corn, and herbicide mechanism of action plots.
Both field days conclude with a sponsored lunch and pesticide recertification credits.
We hope to see you there!
Pam and Don
Don W. Morishita, Ph.D.
Superintendent, Professor of Weed Science and Extension Specialist University of Idaho | Kimberly R&E Center | 3806 N. 3600 E. | Kimberly, ID
83341 USA
Email: don@uidaho.edu | Phone: 208.423.6616 | Fax: 208.423.6631
Pamela J.S. Hutchinson
Potato Cropping Systems Weed Scientist
Aberdeen R&E Center
1693 S 2700 W
Aberdeen, ID 83210
Cell ph 208-681-1304
Office ph 397-4181 fax 397-4311
phutch@uidaho.edu
POTATO ASSOCIATION OF AMERICA MEETING
102nd Annual Meeting
July 22-26, 2018
Boise, ID
visit www.uidaho.edu/PAA2018
Ag Talk Tuesday
All Crops All Locations
Posted on: June 18, 2018 by Jerry Neufeld
The following information was provided by Dr. Pamela Hutchinson, Ag Extension Specialist with the University of Idaho.
WHAT: AG TALK TUESDAY
WHEN: JUNE 19,2018
11:30a to 1p
WHERE: THE BAY CAFE, AMERICAN FALLS
2830 Marina Rd
American Falls, ID 83211
(208) 226-2688
Potato, weed, and cereal pathology specialists have initiated "Ag Talk Tuesday" with multiple ATT sessions throughout the growing season in order to interact with University of Idaho specialists and get answers as well as discuss current crop status. We learn from you, too!
Please come to our third UofI Extension Ag Talk Tuesday, on June 19, from
11:30 AM to 1:00 PM.
This event is a non-host lunch where you can join UofI Ag Extension Specialists to talk about current ag production issues. We'd love to hear about what you are seeing in your fields. To help foster conversation, Drs Pamela J.S. Hutchinson, Kasia Duellman will give an update on potato diseases, insects, and weeds. Other specialists and county extension educators may also be present to help field any questions you may have or to hear about your own wisdom and experiences on what works and doesn't work on your farm.
Please join us Tuesday June 19th.
Contact Pamela J.S. Hutchinson for more information.
phutch@uidsho.edu
Future ATTs
June 26 - no ATT (Hutchinson Snake River Research Pest Management Tour - Aberdeen R and E Center 8a registration 8:30-noon tour followed by sponsored lunch.
July 3 - no ATT
July 10 - Burley (venue to be determined)
July 17 - Idaho Falls
First potato psyllid found in Magic Valley
Potato All Locations
Potato Psyllid
Posted on: June 15, 2018 by Lucy Standley
Psyllids were collected this week on sticky traps in potato in the following counties: Canyon (3 fields), Owyhee (1 field), and Twin Falls (1 field).
This week, we collected 6 psyllid from sticky cards (5 light sites).
We had traps deployed in 75 of the estimated 85 fields (88%) that will be monitored this year and found psyllids in 5 of the monitored fields (5.8%).
The psyllid collected last week tested negative 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.
Another psyllid found in Treasure Valley; none in Magic Valley
Potato All Locations
Potato Psyllid
Posted on: June 8, 2018 by Lucy Standley
One potato psyllid was collected on a sticky trap in potato in the following county: Canyon (1 field).
This week, we collected one psyllid from sticky cards (1 light site).
We had traps deployed in 50 of the estimated 89 fields (56%) that will be monitored this year and found one psyllid in one of the monitored fields (2%).
The psyllid collected last week tested negative 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.
First potato psyllid found in Idaho potato fields this season
Potato All Locations
Potato Psyllid
Posted on: June 1, 2018 by Lucy Standley
One potato psyllid was collected on a sticky trap in potato in the following county: Canyon (1 field).
This week, we collected one psyllid from sticky cards (1 light site).
We had traps deployed in 50 of the estimated 88 fields (57%) that will be monitored this year and found one psyllid in one of the monitored fields (1.13%).
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.
2018 Potato psyllid monitoring program underway in Idaho
Potato All Locations
Potato Psyllid
Posted on: May 25, 2018 by Lucy Standley
The University of Idaho, in collaboration with Miller Research and several crop consultants across the state will continue our monitoring program for potato psyllids, zebra chip, and liberibacter (Lso), the bacterium that causes zebra chip. The monitoring program covers commercial potato fields throughout southern Idaho and currently is funded in part by USDA and generous in-kind contributions by our collaborators.
The first deployment of sticky cards occurred last week in 17 Treasure Valley sites and 21 Magic Valley sites. Next week we expect to initiate sampling in 8 and 17 additional fields in the Treasure and Magic valleys, respectively.
This week we collected our first sticky cards of the season from potato fields. No potato psyllids were found in potato fields this week.
More details on the program will be forthcoming as we continue to ramp up sampling efforts. We hope to maintain a monitoring program at a level similar to recent years, but the breadth of the program this year will depend on funding that is still pending.
More information and resources on potato psyllids and zebra chip, including management and scouting recommendations, can be found at the link below.
http://www.uidaho.edu/cals/potatoes/news/psyllid-management
Ag Talk Tuesdays
All Crops All Locations
Cereals, Potatoes, Weeds - in the future, additional crops will be included coincident with location of ATT
Posted on: May 23, 2018 by Juliet Marshall
Potato, weed, and cereal pathology specialists are initiating "Ag Talk Tuesday" with multiple ATT sessions throughout the growing season in order to interact with University of Idaho specialists and get answers as well as discuss current crop status.
Details:
WHAT: Ag Talk Tuesday - no host lunch
WHEN: June 5 at 11:30 AM - 1:00 PM
WHERE: first one at Homestead Family Restaurant in Blackfoot, ID
We'd like to invite you to our first ever UofI Extension Ag Talk Tuesday, on June 5, from 11:30 AM to 1:00 PM.
The plan is to have multiple ATT sessions throughout the growing season in order to interact with University of Idaho specialists and get answers as well as discuss current crop status.
What: The FIRST EVER UofI Extension "Ag Talk Tuesday"
When: June 5, 11:30AM to 1:00PM
Where: Homestead Family Restaurant, 1355 Parkway Dr, Blackfoot, ID 83221 https://goo.gl/maps/GqfR7oghVNt
This event is a non-host lunch where you can join UofI Ag Extension Specialists to talk about current ag production issues. We'd love to hear about what you are seeing in your fields. To help foster conversation, Dr. Juliet Marshall will present some information on Fusarium head blight on small grains and the 2018 outlook; Dr. Pam Hutchinson will provide some tips on post-emergence herbicides; and Dr. Kasia Duellman will give an update on early season potato diseases. Juliet and Kasia will also mention the UofI Spore Trapping Network that will be fully operational by then. Other specialists and county extension educators may also be present to help field any questions you may have or to hear about your own wisdom and experiences on what works and doesn't work on your farm.
Please join us, and if you plan to attend, please RSVP to me by replying to this email or calling and leaving a message at 208-529-8376.
Future locations for Ag Talk Tuesday will be determined, to accommodate growers in different regions (we’re open to suggestions for venues and would like to rotate around eastern Idaho).
Sincerely,
Juliet
Juliet Marshall, Ph.D.
Endowed Research Professor, Cereals Pathology and Agronomy
Department of Entomology, Plant Pathology and Nematology
Idaho Falls R&E Center
1776 Science Drive Suite 205
Idaho Falls, ID 83402
208-529-8376 office
208-390-4859 cell
http://www.uidaho.edu/extension/cereals/scseidaho
Fire Blight Confirmed
Apple All Locations
Erwinia Amylavora
Posted on: May 18, 2018 by Rich Guggenheim
Fire Blight has been confirmed in Canyon County. This bacterial infection can attack anything in the rose family (Rosaceae). It is especially destructive to apples (Malus spp.), pears (Pyrus spp.), and crabapples (Malus spp.). There is no cure for fire blight. Prevention is the best solution. Purchase resistant varieties, minimize rapid growth and succulent tissue, prune out blighted twigs and cankered branches. Check out the publications and websites below for more information.
http://treefruit.wsu.edu/crop-protection/disease-management/fire-blight/
https://masters.agron.iastate.edu/redirect/514/lesson04/FireBlight.html
http://extension.colostate.edu/docs/pubs/garden/02907.pdf
» https://pnwhandbooks.org/plantdisease/host-disease/apple-malus-spp-fire-blight
» http://pnwpestalert.net/uploads/fire_blight.pdf
lygus bug in alfalfa seed, 2018
All Crops All Locations
lygus bug
Posted on: May 7, 2018 by Jerry Neufeld
The Lygus degree day calculator hosted by Integrated Plant Protection Center at Oregon State University and the IPM Centers - PNW Coalition shows that, depending on your location in the Treasure Valley, we have accumulated 280 to 290 degree days between January 1, 2018 and May 7, 2018. As you move west in the Treasure Valley the growing degree days increase. This is a few days ahead of 2017 and a few days ahead of the 30-year average; once again, this varies depending on your location. Peak emergence of lygus bug 1st and 2nd instar nymphs occurs right around 272 accumulated degree days; this should be about right now, and is the time monitoring for lygus bugs in alfalfa seed fields should begin.
When using most insecticides, fields should be treated when numbers of lygus bugs reach 4-5 lygus bug nymphs per 180 degree sweep. Growers using Assail, or Beleaf, as stand-alone sprays probably should treat before or just as 4th instar nymphs are detected.
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.
» https://pnwhandbooks.org/insect/agronomic/sugar-beet/sugar-beet-sugar-beet-root-maggot
Hail damage to onions
Onion Treasure Valley
Hail Damage
Posted on: May 7, 2018 by Stuart Reitz
A strong thunderstorm with high winds and hail crossed through parts of the valley Sunday evening. According to the National Weather Service, it went from Nyssa to the Fruitland and Payette areas.
If your onions were damaged in the storm, remember that the plants will benefit from a protective bactericide/fungicide application. Hail can create small and large wounds that leave plants extremely vulnerable to diseases.
As soon as you can get on the field, apply a copper containing protectant spray. Copper protects against bacterial and fungal diseases so it is a better option than fungicides that do not contain copper. This will help prevent infections while those wounds heal. The sooner after any damage occurs, the better.
Free Pesticide Disposal
All Crops All Locations
Posted on: April 30, 2018 by Jerry Neufeld
The Idaho State Department of Agriculture is conducting free pesticide disposals in four locations during May. Click on the pdf below for more information.
Onion thrips in Volunteer Onions
All Crops All Locations
Posted on: April 27, 2018 by Stuart Reitz
Onion thrips are starting to show up in greater numbers (both adults and immatures) on volunteer onions and other weeds. Volunteer onions serve as a host for both onion thrips and Iris Yellow Spot Virus. After a slight cool down, temperatures will be back in the 80s by the middle of next week - ideal conditions for development of thrips populations and their movement into current season onion fields.
If you have onion fields you would like included in our onion monitoring project, please contact stuart.reitz@oregonstate.edu / 541-881-1417.
Survey on Alfalfa Thrips
All Crops All Locations
Posted on: April 26, 2018 by Jason Thomas
Insect pests come and go in crops as conditions change. To learn more about the current state of thrips, a small insect that can occur in alfalfa the University of Idaho Extension service is conducting a survey about these insects. We encourage all those who work with alfalfa, including consultants to take this 3-minute survey. To thank you for your time, you will be entered into a raffle to win one of four $25 Amazon Gift Cards. Please share this with as many other farmers and consultants who work with alfalfa as possible so we can learn more about these pests.
» https://uidaho.co1.qualtrics.com/jfe/form/SV_bK1iz26kvhsmfE9
Potato Virus Detection Training Workshops
Potato All Locations
Posted on: April 16, 2018 by Nora Olsen
Due to the success of our Potato Virus Detection Training Workshop at Othello WA in 2016, we are hosting another set of workshops in 2018 at three locations: Othello WA, Antigo WI and Presque Isle ME. These workshops will cover field identification of PVY (strains O, N-Wi and NTN), including visual identification of foliar symptoms on 20 cultivars commonly grown in each region. Recent standardization of seed certification programs across the U.S. includes the requirement for documentation of inspector training. However, this training will also be beneficial to growers, people who rogue, and those in the potato industry in general. We expect a high attendance rate so please sign up early! Locations, dates and times are listed below. Additional details can be found on our registration page Potato Virus Detection Training Workshop Registration.
Othello, WA
Date/Time: Thursday June 21, 2018. This workshop will be integrated into the Washington State University Potato Field Day, 8:30 a.m. to 1 p.m.
Location: Washington State University Research Farm, 1471 West Cox Road, Othello, WA
You are also invited to these events held nearby:
• Tuesday June 19, Final WA Commercial Potato Seed Lot Reading for 2018, 1471 West Cox Road, Othello, WA, 8:30 a.m. to 2:30 p.m.
• Wednesday June 20, Oregon State University Potato Field Day, OSU Research and Extension Center, 2121 South 1st Street, Hermiston, OR
Antigo, WI
Date/Time: Thursday July 26, 2018, 9:30 to 11:30 a.m. in advance of the Langlade Ag Research Station County Field Day, 1 to 3:30 p.m.
Location: University of Wisconsin Langlade Agricultural Research Station, Langlade County Airport, N3689 Langlade Road, Antigo, WI
Presque Isle, ME
Date/Time: Tuesday July 10, 2018, 10 a.m. to 12 p.m. for inspectors and 2 to 4 p.m. for growers and field staff, with a rain date on Thursday July 12.
Location: University of Maine Aroostook Farm, 59 Houlton Road, US Route 1, Presque Isle, Maine
University and USDA experts will be available at each location to give you a tour and answer your questions. These workshops are part of a USDA NIFA Specialty Crops Initiative award #2014-51181-22373 titled “Biological and economic impacts of emerging potato tuber necrotic viruses and the development of comprehensive and sustainable management practices”.
To register for the event please visit Potato Virus Detection Training Workshop Registration.
For more information about the workshop please email pbg-potatovirus@cornell.edu.
Growing a great lawn! Free workshop!!!
Landscape and Garden All Locations
Green lawns!
Posted on: April 11, 2018 by Rich Guggenheim
Growing a GREAT Lawn is a free workshop being held from 9-12 at Nampa's Lakeview Park on April 14th from 10-12. Register online at the Nampa Parks and Rec website. This workshop will be taught by University of Idaho Extension horticulture professor and state Master Gardener Coordinator, Rich Guggenheim. You will learn how to grow a healthy, green lawn while cutting the need for fertilizer, pesticides, and reducing your water consumption.
Call 468-5890 for more info.
Peach Twig Borer -Anarsia lineatella
Tree Fruits All Locations
Peach Twig Borer
Posted on: April 6, 2018 by Rich Guggenheim
Peach twig borer can damage stone fruits by feeding in shoots and causing shoot strikes, or by feeding directly on the fruit. Shoot damage is most severe on the vigorous growth of young, developing trees because feeding kills the terminal growth and can result in undesirable lateral branching. As fruit matures, it becomes highly susceptible to attack; damage is most likely to occur from color break to harvest. Twig borer larvae generally enter fruit at the stem end or along the suture and usually feed just under the skin.
Adults from the overwintered generation usually begin emerging in April or early May. First generation larvae usually develop in twigs during May and June and give rise to the next flight of moths in late June or early July. Larvae from this and subsequent generations may attack either twigs or fruit depending on fruit maturity and population density.
» http://jenny.tfrec.wsu.edu/opm/displaySpecies.php?pn=90
» http://ipm.ucanr.edu/PMG/r602300611.html
» https://utahpests.usu.edu/slideshows/ppt/05sh-insects-ptbcontrol.pdf
Allium (Onion) Leaf Miner
Onion Treasure Valley
Allium Leaf Miner
Posted on: March 27, 2018 by Jerry Neufeld
Allium Leaf Miner, or Onion Leaf Miner is one of the worst onion pests in Europe. It is currently found in several counties in New Jersey and Pennsylvania. This pest was recently deregulated by USDA-APHIS, meaning it will not be stopped when found at port inspections, thereby posing a threat to other onion producing areas in the U.S. Click on the link below for more information about this pest from the Oregon Department of Agriculture.
» http://www.oregon.gov/ODA/shared/Documents/Publications/IPPM/AlliumLeafminerPestAlert.pdf
Cull Onion Disposal in Idaho- 2018
All Crops All Locations
cull onions
Posted on: March 13, 2018 by Jerry Neufeld
The deadline to dispose of cull onions in Idaho is March 15. The pdf file below from Idaho State Department of Agriculture contains more information about cull onion disposal.
Cull Onion Disposal Deadline - March 15
Onion Treasure Valley
Onion Maggot
Posted on: March 9, 2018 by Stuart Reitz
March 15th is the deadline for disposing of cull onions in Malheur County, and in Ada, Canyon, Gem, Payette, Owyhee and Washington counties of Idaho, according to Oregon Department of Agriculture (ODA) and Idaho State Department of Agriculture (ISDA) rules. That means there must be no culls – onions deemed waste or not useable for human consumption – on hand at any packing sheds, in fields or at animal feed facilities on the morning of that date. Onions sorted after March 15th must be properly disposed of within one week. Trucks transporting onions should be covered to prevent spillage along roadsides.
ODA Rules: https://secure.sos.state.or.us/oard/viewSingleRule.action?ruleVrsnRsn=158227
ISDA Rules: https://adminrules.idaho.gov/rules/current/02/0617.pdf
» https://secure.sos.state.or.us/oard/viewSingleRule.action?ruleVrsnRsn=158227
Updated manual and resources now available to help navigate the Potato Sustainability Initiative (PSI) survey and audit
Potato All Locations
Posted on: February 23, 2018 by Nora Olsen
Updated manual and resources now available to help navigate the Potato Sustainability Initiative (PSI) survey and audit
Announcements recently went out on whether you will be audited in person for your 2017 responses to the Potato Sustainability Initiative (PSI) survey. Most process growers are requested to participate in the PSI sustainability survey and approximately 20% of the growers who completed the survey will be audited each year. The audit involves an interview between the grower and auditor with specific questions and an inspection of documents. A manual has been developed to help growers methodically and successfully gather required documents for the audit, with examples of standard operating procedures, and resources to help answer interview questions. The manual is posted at http://www.uidaho.edu/cals/potatoes. Changes to this manual will be done periodically to adjust for changes to the PSI survey. Note that the survey and audit changed from the previous year. The manual was developed by University of Idaho, Washington State University and IACI with funding from the NW Potato Research Consortium.
