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Onion Thrips
Onion Treasure Valley
Onion Thrips
Posted on: May 8, 2013 by Stuart Reitz
Onion Thrips – A check of the onion fields at the Malheur Experiment Station and surrounding grower fields showed an average of almost 1 thrips per plant. Most thrips found were adults, but larvae were also observed on several plants. With the warm weather that is forecast for the next 7 - 10 days, thrips populations may build very rapidly. This would be a good time for growers to begin scouting fields for thrips activity.
U-Idaho 2013 potato psyllid and ZC recommendations
All Crops All Locations
potato psyllids and ZC
Posted on: May 7, 2013 by Erik Wenninger
Click on the link below to see the 2013 Idaho recommendations for potato psyllids and zebra chip, a brief summary of 2012 findings, and the monitoring plans for 2013.
Recommendations were a collaborative effort of Erik Wenninger, Nora Olsen, Phil Nolte, and Mike Thornton of the University of Idaho; Jeff Miller of Miller Research; Andy Jensen of the Idaho, Washington, and Oregon Potato Commissions.
Scab and Fireblight
Tree Fruits All Locations
Apple Scab and Fire Blight coming soon!
Posted on: May 6, 2013 by Tony McCammon
Apple scab infections also can occur when leaf wetness extends for as little as six hours in temperatures around 70 degrees. Southern Idaho has not had large outbreaks of scab over the past several years due to the reduction of overhead sprinkler use. If you have had a bad scab year in the past two or three years you might consider treating your trees this week and changing your irrigation system in the future.
Fire Blight infections occur when leaf wetness or high humidity accompany a temperature around 65 degrees or higher for a 24 hour period. The forecast of thunderstorms and moderate temperatures this coming weekend could prove dangerous for your trees. Forecasts rate the likelihood of infection as EXTREMELY HIGH. Have an antibiotic such as serenade or agri-mycin on hand. Homeowners can use blight ban or Mico-shield. If you do not choose to control fire blight at this time monitor very closely for new infections and prune them out. They usually show up within 7 to 14 days.
In both cases young trees are more susceptible than older trees. And young flowers are more susceptible than older flowers.
cereal leaf beetle
All Crops Treasure Valley
cereal leaf beetle
Posted on: May 3, 2013 by Jerry Neufeld
I was at the UI Parma Research and Extension Center yesterday and was doing some scouting in the winter wheat. I found cereal leaf beetle adults in the wheat, so egg laying will begin in the very near future. Cereal leaf beetle have not been a big problem the past few years, but It is still a good idea to scout for CLB eggs as an indication of potential larvae populations. Spring planted grains are preferred by CLB over winter planted grains. Click on the pdf images below to see the CLB control recommendations from the 2013 PNW Insect Management Handbook and to see images of the CLB life stages. Also, click on the link below to read CIS 994 titled “Cereal Leaf Beetle” from the University of Idaho.
New potato information guides
Potato All Locations
Posted on: May 2, 2013 by Nora Olsen
The University of Idaho has recently published three potato related extension bulletins.
- 'Portable test kits for diagnosing potato disease' available at www.cals.uidaho.edu/edcomm/pdf/BUL/BUL0883.pdf
This bulletin highlights the use and accuracy of commercially available pathogen test kits for diagnosing disease in the field and storage. Multiple test kits for numerous diseases, such as PVY and Pythium, were used, assessed and compared to results from traditional diagnostic methods. Ease of test kit use and storage was also assessed and discussed. Overall, the test kits did a good job of accurately identifying the pathogen causing the problem, and in some cases, ruling out potential pathogens. They are relatively easy to use and can typically provide a result within 3 to 5 minutes. They are portable for use in the field, storage or office.
- 'Superficial growth on potatoes' available at www.cals.uidaho.edu/edcomm/pdf/CIS/CIS1191.pdf
This bulletin outlines factors that may promote superficial growth of non-pathogenic fungi and bacteria that can grow on the surface of a potato. Management practices to reduce the potential for superficial growth are also discussed.
- 'Storage Management of Blazer Russet Potatoes' available at www.cals.uidaho.edu/edcomm/pdf/CIS/CIS1192.pdf
This bulletin describes best storage management practices for 'Blazer Russet' released in 2005 by the USDA ARS and the agricultural experiment stations of Idaho, Oregon, and Washington. This is an early-maturing and high-yielding variety acceptable for fresh market or early season processing. This variety has acceptable fry color when stored at 48F and has a shorter dormancy length than Russet Burbank.
lygus
All Crops Treasure Valley
lygus
Posted on: May 2, 2013 by Jerry Neufeld
The Lygus degree day calculator hosted by Integrated Plant Protection Center at Oregon State University and the IPM Centers - PNW Coalition (http://pnwpest.org/cgi-bin/ddmodel.pl?spp=lyg) shows that, depending on your location in the Treasure Valley, we have accumulated just over 180 degree days since January 1, 2013. Peak emergence of lygus bug 1st and 2nd instar nymphs should occur right around 272 accumulated degree days: this usually occurs around mid-May, and is the time monitoring for lygus bugs in alfalfa seed fields should begin. Right now that is predicted to occur on about during the second week of May 8 or 9).
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 4th instar nymphs are detected. You can monitor degree day accumulation using the link provided above as follows:
1) Selecting “ lygus bug [alfalfa seed]Ben Simko 2000” degree day model from the “Select degree day model….” drop down box at the top of the form
2) In the “Select location” box, select a location in the drop down box best describing your location (e.g. “Parma experiment st am i” in the “Washington, Idaho” box if you want information for a field near Parma). Make sure to select “None” at the top of the lists in the other two location boxes.
3) Leave the “Or upload your own weather data…” box blank
4) In the “Forecast:”, enter your zip code or your city, state in the “NWS zip code/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 1st and 2nd instar 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.
5) 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. For Idaho and eastern OR, this will be the middle box. As above, select “none” in the other two boxes.
6) 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.
Additional updates will be posted as the 272 degree day accumulation target approaches.
sugarbeet root maggot
All Crops Treasure Valley
sugarbeet root maggot
Posted on: May 1, 2013 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.
Fruit Advisory Newsletter - Issue 2
Tree Fruits All Locations
Posted on: April 30, 2013 by Tony McCammon
In this issue, I have updated the Degree days for South Western, Southern, and added Eastern Idaho. Between 5-8 percent of adults moths have emerged. Fire Blight infection is likely this week, Cherry mildew is a concern, and leafrollers are in their 4th instar. Shothole disease is also making its rounds again.
Please email me if you have any articles you would like researched or ideas to make this newsletter better and more usable. tonym@uidaho.edu www.hortmagic.org
Fruit Advisory newsletter - Issue 2
Small Fruits All Locations
Codling Moth, Fireblight, Cherry Mildew, and Leafroller
Posted on: April 30, 2013 by Tony McCammon
In this issue, I have updated the Degree days for South Western, Southern, and added Eastern Idaho. Between 5-8 percent of adults moths have emerged. Fire Blight infection is likely this week, Cherry mildew is a concern, and leafrollers are in their 4th instar. Shothole disease is also making its rounds again.
Please email me if you have any articles you would like researched or ideas to make this newsletter better and more usable. tonym@uidaho.edu www.hortmagic.org
potato psyllid identification and trapping workshops
All Crops All Locations
potato psyllid
Posted on: April 22, 2013 by Jerry Neufeld
Just want to remind everyone about the Potato Psyllid trapping and identification workshop from 1 to 3 pm today at the UI Parma R and E Center.
Potato Psyllid trapping and identification workshops will be held across Idaho in late May. There will be a workshop on May 28 at the UI Parma R and E Center, on May 29 at Miller Research in Rupert, and on May 30 at the UI Idaho Falls R and E Center. For more information, including times, click on the pdf below which will bring up the April 19, 2013 edition of the Potato Progress edited by Andrew Jensen.
Fruit Advisory
All Crops All Locations
Frost, Codling Moth, Fireblight
Posted on: April 16, 2013 by Tony McCammon
First issue of the year:
Frost protection and tables for determining frost damage
Degree Day Temperature notifications
Fertilizing Brambles and Grapes
Order your Intermountain Fruit Tree Guide
Codling Moth Biofix and trapping
Potato psyllids found in the Magic Valley
Potato Magic Valley
potato psyllids and ZC
Posted on: April 12, 2013 by Erik Wenninger
Several natural or semi-natural areas near Twin Falls are being monitored during the winter for potato psyllids. Sites were selected near watercourses where the alternative host plant bitter nightshade is found. Thus far, no psyllids have been found in direct inspection of plants; however, two adult potato psyllids were found on a yellow sticky trap near Shoshone Falls in late March. Whether these psyllids overwintered or have migrated to our area is unknown. They will be tested for liberibacter, the bacterium that causes ZC, and monitoring efforts will continue through the season. More information on potato psyllids and ZC can be found below.
Pesticide Disposal
Announcements Treasure Valley - Idaho
Posted on: April 11, 2013 by Jerry Neufeld
Idaho State Department of Agriculture is conducting a Pesticide Disposal Program in four Idaho locations this spring. The dates and locations are: Nampa, May 6; Weiser, May 7; Lewiston, May 8; and Coeur d’ Alene, May 9. Click on the image below for more information.
volunteer onions
Onion Treasure Valley - Idaho
thrips
Posted on: April 5, 2013 by Jerry Neufeld
Dr. Mike Thornton, from the U of I, Parma R and E Center is reporting that volunteer onions are emerging. Volunteer onions can be a host for both onion thrips and Iris Yellow Spot Virus, and act as a reservoir to infest newly emerged onion fields that are nearby. He recommends that growers take measures to control volunteer onions prior to emergence of the seeded onion crop.
Movento Section 18 Label for Onions
Onion Treasure Valley - Idaho
Onion Thrips
Posted on: March 27, 2013 by Stuart Reitz
The U.S. EPA has APPROVED our request for Section 18 emergency use of spirotetramat (Movento, Bayer CropScience) to control thrips in dry bulb onions grown in Idaho and Oregon during 2013.
This exemption is effective immediately and expires on 15 September 2013.
As always, the Section 18 label must be in possession of the user at the time of application.
Outback Steakhouse Gift Certificate Winners
All Crops Magic Valley
onion maggot
Posted on: March 26, 2013 by Jerry Neufeld
this is test
Food Safety Modernization Act
Announcements All Locations
Posted on: March 13, 2013 by Jerry Neufeld
The Food Safety Modernization Act will significantly impact growers, packers and processors in the coming years. Members of the food industry have the opportunity to submit comments to FDA on the proposed rules that will be used to regulate the food industry in the coming years. There is a need to be familiar with the proposed rules in order to submit relevant comments to FDA by the May 16, 2013 deadline. A multi-state team involving universities and regulatory agencies in partnership with FDA is offering five opportunities to review the proposed rules. FDA will be presenting information and offering input throughout the workshop. The nearest work shop will be held at the Four Rivers Cultural Center in Ontario, Oregon on April 19, 2013. Click on the pdf below for more information.
Positive Zebra Chip Infected Potatoes in Power County
Potato All Locations
Zebra Chip
Posted on: March 12, 2013 by Nora Olsen
A recent submission of potato tuber samples grown in Power County were verified to be positive for Lso (Candidatus Liberibacter solanacearum), the bacterium causing zebra chip in potatoes. Symptoms of zebra chip include necrotic flecking in the flesh of the tuber, similar to net necrosis, but the symptoms extend throughout the length of the tuber. When diseased tuber tissues are fried, severe darkening in both chips and fries are seen. Because symptoms can be seen in uncooked tissues, the disease is a concern for both fresh and process potatoes. The number one means to control zebra chip is to control infected potato psyllids. Non-infected psyllids will not cause zebra chip.
Please visit the following websites for additional information.
cull onion disposal
Onion All Locations
onion maggot
Posted on: February 22, 2013 by Jerry Neufeld
The deadline for disposing of cull onions in Ada, Canyon, Gem, Payette, Owyhee and Washington Counties is March 15, 2013. Click on the pdfs below, from the Idaho State Department of Agriculture,for more information about disposal of cull onions
Southern and Eastern Idaho Cereal Schools
Small Grains All Locations
Posted on: January 30, 2013 by Juliet Marshall
Get the latest information on cereal varieties, disease, fertility at the southern and eastern Cereal Schools. Feb 5 at Burley Inn, 8:30 AM in Burley; Feb 6 at the Ramada Inn 8:30 AM in Pocatello; Feb 7 at the Ramada Inn 8:30 AM in Idaho Falls; Feb 7 at the Relay Station Restaurant at 8:30 AM in St. Anthony; and Feb 8 at the Robinson Building 8:30 AM in Preston, ID. Check the website for more information.
Post-harvest Handling and Food Safety Workshop
All Crops All Locations
Posted on: January 21, 2013 by Nora Olsen
Friday, Feb. 1: Workshop to Address Post-harvest Handling and Food Safety
Fresh produce growers are invited to attend a Friday, February 1 workshop in Caldwell on post-harvest handling, food safety, wholesale marketing, and profit planning. The workshop will address issues of interest due to FDA’s recent release of the proposed Food Safety Modernization Act rules.
The workshop is presented by the Northwest Center for Alternatives to Pesticides, University of Idaho Extension and Idaho State Department of Agriculture through the Idaho Preferred program.
The training will be provided by FamilyFarmed.org, which is conducting its Direct Marketing & Wholesale Success workshop in 15 states. Topics will include marketing and packing quality, post-harvest handling, writing a food safety plan and pack shed design. The workshop will conclude with a panel of retail and food service buyers from the Treasure Valley and a discussion of their local produce buying preferences and requirements.
Participating farms will receive a free manual, Wholesale Success: A Farmers Guide to Food Safety, Postharvest Handling, Packing and Selling Produce, valued at $70. The 312-page color publication is a leading resource on selling into wholesale markets. It includes topics including Calculating Return on Investment; Cleaning, Drying, and Curing Produce; Traceability; Packing Shed Design; and Maintaining the Cold Chain.
Workshop sessions on financial management tools and recordkeeping will also be offered concurrently on February 1.
Friday evening & Saturday, February 2: Fourth Annual Grower’s Own Conference
Following the workshop is the fourth annual Grower’s Own Conference, a farmer-to-farmer exchange and networking opportunity for farmers interested in organic production methods. The conference will be held Friday evening and Saturday, February 2.
This year’s guest farmer is Laura Masterson of 47th Avenue Farm, located near Portland. Masterson is a veteran of farmer-to-farmer exchanges in Oregon. She will speak about her extensive experience in organic vegetable production, season extension, year-round CSA production and marketing, employee and intern management, and microenterprise budgeting.
“This is a unique and highly valuable experience,” says Grower’s Own Conference co-organizer Beth Rasgorshek of Canyon Bounty Farm in Nampa. “It is also farmer driven, so now is the time to register and cast your vote for the topics to be discussed.”
Some of the topics under consideration include microenterprise selection; wash facilities, packing sheds & supply sources; vegetable start production; livestock feed rations & on-farm production; employee management; integrated pest management; high tunnels; irrigation systems, cooperative CSAs; meat marketing; starting a livestock operation; and alternative financing.
The workshop and conference will be held at the College of Idaho. The Feb 1 workshops cost $25, the Grower’s Own Conference costs $55, and both cost $70. Pre-registration is required. Agenda details and online registration at www.pesticide.org or contact Jennifer Miller at jmiller@pesticide.org or 208-850-6504.
Funding is provided in part by USDA RMA.
Contacts:
Ariel Agenbroad, 208-459-6003, University of Idaho Extension, Canyon County
Jennifer Miller, 208-850-6504, Northwest Center for Alternatives to Pesticides
Beth Rasgorshek, 208-463-1878, Canyon Bounty Farm
Soil copper levels and potatoes
Potato All Locations
Copper toxicity
Posted on: January 11, 2013 by Jeff Miller
A new research article has been published discussing the impact of copper in soils as a result of dairy lagoon water treatment and the effect this can have on potato production. The article can be found at www.nwpotatoresearch.com and is published in the December 26, 2012 issue of Potato Progress (Volume 12, #19).
Outback Steakhouse Gift Certificate Winners
Announcements All Locations
Posted on: December 18, 2012 by Jerry Neufeld
Thank you to everyone who filled out a pest alert survey for 2012. The winners of the Outback Steakhouse Gift Certificates are Wyatt Croft, Andrew Bell, and Jim Shoemaker. Certificates are going in the mail today.
Jerry Neufeld
University of Idaho Potato Conference
Potato All Locations
Posted on: December 17, 2012 by Nora Olsen
‘Education and Innovation’ is this year’s theme for the 45th annual University of Idaho Potato Conference and Eastern Idaho Ag Expo to be held January 22 to 24, 2013 in Pocatello, Idaho. The conference will have concurrent 1-hour sessions each day starting on Wednesday January 23rd at 8 am and ending January 24th at noon. Topics will vary and include all aspects of potato production and marketing. Zebra chip, bacterial ring rot and nematode management will be emphasized.
The conference will go back to its roots with basic potato and plant science education by offering a ‘Potato Science Course’ consisting of nine 1-hour sessions starting with Potato Crop Development and ending with Storage and Quality. You can attend one session to supplement your education on that particular topic, or all nine sessions for the complete course. These classes will be interactive and engaging for all participants, and will focus on the basic concepts needed to understand potato production.
Registration and a complete agenda are available at www.idahopotatoconference.com. Pre-register by January 11 for a reduced registration rate.
Idaho Irrigation Equipment Show and Conference
Announcements Treasure Valley - Idaho
Posted on: December 11, 2012 by Jerry Neufeld
Click on the pdf below for information about the Idaho Irrigation Equipment Show and Conference on January 10, 2013 at the Nampa Civic Center. One pesticide license credit is being offered.
