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onion thrips

Onion    All Locations

onion thrips

Posted on: June 14, 2011 by Jerry Neufeld

Dr. Clint Shock, Superintendant at the OSU Malheur Experiment station is reporting that thrips counts have passed three per plant at the Oregon State University Malheur Experiment Station. Dr. Mike Thornton from the UI-CALS Parma Research and Extension Center is reporting average thrip counts of nearly one per plant. Recent research has shown that most control programs are most effective when early season sprays start when populations are no more than 1 to 3 thrips per plant.

Colorado Potato Beetle

Potato    Magic Valley

Colorado Potato Beetle

Posted on: June 14, 2011 by Jerry Neufeld

Dr. Erik Wenninger, Extension Entomology Specialist with UI-CALS in Kimberly is reporting that Colorado potato beetles were observed in Kimberly late last week. So far, only overwintered adults have been observed, and they will do little damage to potatoes. Scouting should begin soon for eggs and for larvae, which can cause considerable damage.

To guard against development of insecticide resistance, post-emergence applications of neonicotinoid insecticides should not be used if a neonicotinoid seed treatment or other at-planting neonicotinoid treatment was used. Examples of neonicotinoid seed or at-planting treatments include Admire, Belay, Cruiser, Gaucho, and Platinum. Examples of foliar neonicotinoid sprays include Actara, Belay, Endigo ZC, Leverage, and Provado.

Those using “soft” chemistries against Colorado potato beetles should be especially vigilant about scouting to appropriately time sprays. Sprays against the first generation should be applied when the first mature larvae are seen; at this time most of the larvae have hatched, but are still relatively small and susceptible to insecticides.

Border sprays may be considered if populations have not spread into the interior of fields.

Tree Fruit Pest Advisory

Tree Fruits    Treasure Valley - Idaho

Codling moth, Cherry Fruit Fly, and tree borers

Posted on: June 13, 2011 by Tony McCammon

Here is the fifth issue of the Pest Advisory containing information on:

Codling Moth
Western Cherry Fruit fly
Gummosis
Thinning recommendations
and other related pests.

Open the PDF to view the advisory.

Updated USDA GAP Audit

Potato    All Locations

Posted on: June 9, 2011 by Nora Olsen

Please note an updated USDA Good Agricultural Practices (GAP)Good Handling Practices (GHP)Audit Verification Checklist is now available. This latest version was effective June 6, 2011. Visit the USDA website to view the newest version:

http://www.ams.usda.gov/gapghp

The University of Idaho will update their GAP organizational manual to coincide with the latest GAP Audit version. Visit www.kimberly.uidaho.edu/potatoes/gap.htm in the future to download the updated manual.

Only minor changes were made to the audit but these changes will need to be addressed in all future farm and storage audit visits.

Western Cherry Fruit Fly

Tree Fruits    Treasure Valley - Idaho

Western Cherry Fruit Fly

Posted on: June 7, 2011 by Jerry Neufeld

Click on the pdf below for information about the forecasted emergence and spray dates for Western Cherry Fruit Fly. This information is being provided by Mike Cooper from the Idaho State Department of Agriculture.

spider mites in mint

Mint    Treasure Valley - Idaho

spider mites

Posted on: June 6, 2011 by Jerry Neufeld

Jeffery Christianson from Simplot Company is reporting that spider mites are already being found in established mint fields in the Treasure Valley. The mites were found during routine field scouting operations. It seems a bit early, but you may want to be on the lookout for these pests.

stripe rust

Small Grains    Magic Valley

stripe rust

Posted on: June 2, 2011 by Jerry Neufeld

Dr. Oliver Neher from the UI Twin Falls R and E Center is reporting that stripe rust has been confirmed in small grains near Hanson. Some fungicides can’t be applied after heading and some can be applied up until flowering. In all cases apply according to the label.

Colorado Potato Beetle

Potato    Treasure Valley - Idaho

Colorado Potato Beetle

Posted on: June 2, 2011 by Jerry Neufeld

Bill Buhrig from the UI, Parma Research and Extension Center, is reporting that overwintering Colorado Potato Beetle adults are beginning to emerge in southwest Idaho. This overwintering adult stage does not do much damage; however, females are beginning to lay eggs in potato fields. We could see the damaging larvae appear in about 7 to 10 days depending on temperatures. This is the time for growers to be scouting for CPB, especially if they are using "soft" foliar insecticides that target control of early instar larvae.

stripe rust

Small Grains    Treasure Valley - Oregon

stripe rust

Posted on: May 31, 2011 by Jerry Neufeld

Dr. Clint Shock from the OSU Malheur Experiment station is reporting that wide spread stripe rust has been confirmed in Malheur County small grains. Some fungicides can’t be applied after heading and some can be applied up until flowering. In all cases apply according to the label.

Tree Fruit Pest Advisory

Tree Fruits    Treasure Valley - Idaho

Advisory Newsletter Attached

Posted on: May 27, 2011 by Tony McCammon

Things have remained cool, but warm weather is coming up. Here are recommendation for what you should do this weekend and through the next couple weeks to be prepared for key pests in your commercial and back yard fruit trees.

In this issue:
Good Year for Virus applications and why?
Codling Moth spray timing
Trapping and scouting
Apple Powdery Mildew
Peachtwig Borer
Western Cherry Fruit Fly.


onion thrips

Onion    Treasure Valley - Idaho

thrips

Posted on: May 18, 2011 by Jerry Neufeld

Dr. Mike Thornton from the UI Parma station is reporting that onion thrips adults are being caught on sticky traps, and larvae have been observed on volunteer onions. Even though the crop is behind schedule due to cool weather, he advises that growers begin scouting for thrips in the next few days to help in scheduling the first insecticide application.

stripe rust in winter wheat

Small Grains    Treasure Valley - Idaho

stripe rust

Posted on: May 18, 2011 by Jerry Neufeld

UI Cereal Specialist, Dr. Brad Brown is reporting that stripe rust was found yesterday in winter wheat trials at the Parma R&E Center. The wheat is approaching the boot stage so fungicides will be used for control. Commercial fields of wheat and barley need to be scouted ASAP to determine if stripe rust is present so that fungicides can be used prior to the end of the label window for application. For additional information refer to the Extension Cereal website by clicking on “link 1” below.

Other stripe rust alerts for southern Idaho were previously published. That information can be accessed by clicking on “Link 2” below. As the previous alert indicated, do not assume that varieties that have historically had stripe rust resistance will always maintain that resistance. Scouting is essential. A sample of Stephens winter wheat was brought in yesterday with stripe rust present, and Stephens in western Idaho historically has had adequate adult plant high temperature (APHT) resistance. That may no longer be the case.

Pest Advisory Issue 3

Tree Fruits    Treasure Valley - Idaho

Codling Moth, Leafroller, ect

Posted on: May 16, 2011 by Tony McCammon

The warm weather has changed things around significantly Fruit pests are on the move. In this attached file you will find updates on:
Codling Moth
Leafroller
Fire Blight
San Jose Scale
If you have any questions please contact me. Also if you would like a topic researched and added to the advisory please email me.

Fire Blight

All Crops    Treasure Valley - Idaho

Fire Blight off Cougar blight

Posted on: May 13, 2011 by Tony McCammon

Fire Blight is forecasted for Saturday through Monday of this weekend. Cougarblight models predict high probability of infection. Infection is possible when trees have open flowers, had late season pruning, or open wounds and injured branches. For infection to occur at least two hours of moisture during 70 degree temperatures are necessary. Monitor moisture in your apples and pears. If the wetting occurs and flowers are open, apply an antibiotic such as serenade or agri-mycin. 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. More information to follow in Monday’s Advisory.

Stripe Rust Alert

Small Grains    All Locations

Pucinnia striiformis

Posted on: May 12, 2011 by Juliet Windes

Aberdeen, Bingham County, Idaho. Stripe rust is being reported in commercial fields as of May 12, 2011, in Brundage soft white winter wheat. Stripe rust also has continued to proliferate on the Aberdeen Research and Extension Center in USDA-ARS material, in UI Breeding plots and in the University of Idaho’s Cereal Extension plots. The infected plants were at the jointing growth stage. New leaves were not yet infected; sporulation was occurring on lower leaves as a result of an overwintering infection (the first I have seen here in southeast Idaho).

On the Aberdeen research station, Brundage had about 30% affected leaves throughout the plot, Moreland about 5% of the leaves affected. Active and abundant sporulation was occurring. Stripe rust was prevalent throughout the winter wheat variety trials, and two out of the four reps of both the soft white winter and hard red / white winter nurseries were sprayed with a fungicide last week.

Weather is very conducive for infection and rapid spread. It is imperative to protect susceptible varieties with a fungicide. Both strobilurin and triazole fungicides are effective in protecting against subsequent stripe rust infections. However, if stripe rust is currently in your crop, it is recommended that you utilize a triazole fungicide for their slightly curative activity. Fungicide ratings for stripe rust are: Excellent = azoxystrobin (Quadris), pyraclostrobin (Headline), metconazole (Caramba), tebuconazole (Folicur), and fungicide mixes rated Excellent for stripe rust includes Proline, Twinline, Quilt.
Additional information and pictures are available on the Cereals Extension website for southern and southeast Idaho: http://www.extension.uidaho.edu/scseidaho/disease/disease_index.htm

Pest Alert Website

Announcements    All Locations

Computers

Posted on: May 10, 2011 by Jerry Neufeld

Everyone,
Sorry for the multiple emails about the SWCD meetings for February. We are having website problems with an uncooperative computer. Please accept our apologies.
Jerry

Scab and Blight

Tree Fruits    Treasure Valley - Idaho

Apple Diseases

Posted on: May 9, 2011 by Tony McCammon

Apple scab infections occur when leaf wetness extends for as little as six hours in temperatures around 70 degrees. The treasure valley 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 coming weekend 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. I will keep you posted. Have an antibiotic such as serenade or agri-mycin on hand. Homeowners can use blight ban or Mico-shield.

In both cases young trees are more susceptible than older trees. And young flowers are more susceptible than older flowers.

Fire Blight Next 24 hours

Tree Fruits    Treasure Valley - Idaho

Fire Blight

Posted on: May 6, 2011 by Tony McCammon

If you had Fire blight in the past year in your orchard and you have blooms open on your apples or pears. Then you should watch very carefully for leaf wetness and temperatures above 65 degrees in the next 24 hours. If you are more prone to infection then it is recommended that you spray your anti bacterial sprays now. If you are less prone you should keep an eye on the tips of your trees 10 to 12 days from now. That is when the symptoms will begin to make themselves manifest if indeed they were affected in this period.

Good luck!

Nut Growers Conference

Tree Fruits    Treasure Valley - Idaho

Posted on: May 6, 2011 by Tony McCammon

The Northern Nut Growers Association is a national organization of amateur and
commercial nut growers, researchers, breeders, and foresters. The NNGA has decided to
hold their 2011 annual meeting in Logan on the USU campus, with USU Extension as a
conference co-sponsor.

This conference should be very educational for growers, hobbyists and master gardeners,
and it is a rare opportunity to have the meeting held in our back yards.

The conference is scheduled for July 17-22. More information can be found at their
conference website http://nngaconference.usu.edu/program.cfm.

UI Tree Fruit Pest Advisory

Tree Fruits    Treasure Valley - Idaho

Fruit trees

Posted on: May 2, 2011 by Tony McCammon

The Tree Fruit Pest Advisory Issue 2 Dated May 2
Topics include:
Organic Peach Twig Borer
Degree Day Countdown
Frost Damage
Cold Weather Pollination
Wilbur-Ellis Company Report

If you have a topic you would like written about in this advisory please email tonym@uidaho.edu. Thanks,

cutworms in sugarbeets

Sugarbeets    Treasure Valley - Idaho

cutworms

Posted on: April 20, 2011 by Jerry Neufeld

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

Fruit Pest Advisory Newsletter

Tree Fruits    Treasure Valley - Idaho

Posted on: March 29, 2011 by Tony McCammon

It is that time of year again. I hope these messages will help you get started on the right foot as you control the pests in your orchards. Please feel free to email me if you have additional questions or information you would like posted in the advisories. If you would like me to cover a specific topic feel free to request it through email. Thanks and happy growing. Open the PDF file to view the newsletter.

NPDES permits

Announcements    All Locations

Posted on: March 29, 2011 by Jerry Neufeld

There has been much talk this winter about the new rule at EPA requiring producers and other pesticide applicators to have an NPDES permit if applying pesticides near or to water. The original court ruling required that EPA have this permit in place by April 9, 2011. The latest court ruling has just extended this mandate until October 31, 2011. You can see the judge’s ruling by clicking on the pdf below.

Movento for onion thrips

Onion    Treasure Valley - Idaho

onion thrips

Posted on: March 21, 2011 by Jerry Neufeld

Idaho has received a section 18 label for use of Movento to use in management of onion thrips in onion bulbs during the 2011 growing season. Growers need to have a copy of the label in hand and follow all label directions. The label can be found on the Idaho State Department of Agriculture website at the following address: http://www.agri.state.id.us/Categories/Pesticides/registration/Section18.php

Onion Cull Order

Onion    Treasure Valley - Oregon

Onion Maggot

Posted on: March 14, 2011 by Steve Norberg

Onion Maggot Control Area in Malheur County
603-052-0360
Control Area: Onion Maggot -- Malheur County

(1) A control area is established within the boundaries of Malheur County for the protection of
the onion industry by the eradication or control of the insect pest known as the onion maggot.
This control area order is based on IPM principles first recognized and used by Malheur County
growers in 1957.

(2) The following methods of eradication and control are declared to be the proper methods used
in this control area order:

(a) All cull or waste onions in Malheur County shall be disposed of by a method approved by
this control order prior to March 15 each year; for onions sorted after that date until July 1, the
resulting cull and waste onions shall be disposed of within one week after such sorting;

(b) Disposal of cull or waste onions shall be accomplished only as set forth below:
(A) Disposal by covering in a dump site approved by the Oregon Department of Environmental
Quality (DEQ). Culls and onion debris shall be dumped and covered by at least 12 inches of
onion-free soil by March 15 each year;

(B) Disposal by animal feeding. Culls and onion debris shall be completely removed from
feeding areas by March 15 and buried under 12 inches of onion-free soil. Onions tramped into
the soil so they cannot be removed shall be plowed to a depth of 12 inches;

(C) Disposal by chopping or shredding. Chopped or shredded onion debris that is incapable of
sprouting may be returned to the field at a tonnage rate no higher than the DEQ-approved rate of
80 tons per acre and plowed to a depth where no onion parts are exposed on the surface;

(D) Composting. All onion debris shall be incorporated into the compost bed and completely
covered by 12 inches of onion-free soil;

(E) Disposal of residue in onion producing fields. Commercial onion fields where sort out bulbs
are left at harvest shall be disked to destroy the bulbs and shall be plowed to a depth of at least
12 inches by March 15 each year. Seed bulbs shall be disposed of in the same manner following
the last harvest. The owner of the field is ultimately responsible for compliance with this rule;

(F) If inclement weather prevents plowing, the culls will be treated with an EPA-labeled
insecticide currently listed in the PNW Insect Control Handbook at prescribed intervals until
proper disposal occurs.

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