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Powdery Mildew in Sugarbeets
All Crops Treasure Valley - Idaho
Posted on: June 21, 2005 by Jerry Neufeld
Amalgamated Sugar Company Field Representatives are saying that now is the time to plan your treatment for powdery mildew in sugarbeets. While mildew has not yet been found in the Treasure Valley, AMSCO Field Representatives say the modes of action of the mildew chemistries work best if treatments are applied before mildew is found in the field. AMSCO is recommending mildew applications in the west end of the Treasure Valley by July 5 and applications in the east end of the Treasure Valley (Ada/Canyon County line) no later than July 10. Treatments should be made by these dates regardless of whether or not your fields are surface or sprinkler irrigated. THIS WEBSITE DOES NOT CONTAIN AN UPDATED REFERENCE PAGE FOR POWDERY MILDEW IN SUGARBEETS. YOU SHOULD CONTACT YOUR FIELD REPRESENTATIVE FROM AMSCO FOR THEIR TREATMENT RECOMMENDATIONS.
Powdery Mildew in Sugarbeets
All Crops All Locations
Posted on: June 21, 2005 by Jerry Neufeld
Amalgamated Sugar Company Field Representatives are saying that now is the time to plan your treatment for powdery mildew in sugarbeets. While mildew has not yet been found in the Treasure Valley, AMSCO Field Representatives say the modes of action of the mildew chemistries work best if treatments are applied before mildew is found in the field. AMSCO is recommending mildew applications in the west end of the Treasure Valley by July 5 and applications in the east end of the Treasure Valley (Ada/Canyon County line) no later than July 10. Treatments should be made by these dates regardless of whether or not your fields are surface or sprinkler irrigated. THIS WEBSITE DOES NOT CONTAIN AN UPDATED REFERENCE PAGE FOR POWDERY MILDEW IN SUGARBEETS. YOU SHOULD CONTACT YOUR FIELD REPRESENTATIVE FROM AMSCO FOR THEIR TREATMENT RECOMMENDATIONS.
Snake River Weed Control Tour
Announcements All Locations
Posted on: June 16, 2005 by Nora Olsen
You Are Invited to Attend
THE SNAKE RIVER WEED CONTROL TOUR
June 21 and 22, 2005
University of Idaho Locations: Aberdeen R&E Center (June 21st)and Kimberly R&E Center (June 22nd).
Registration begins at 8:00 A.M. with the tours starting at 8:30 A.M. Tours will conclude at noon with a sponsored lunch each day. Bring friends and associates. Idaho pesticide re-certification credits (3) will be offered.
Call Aberdeen at 208-397-4181 or Kimberly at 423-4691
for more information.
WE HOPE TO SEE YOU AT THE TOURS!!!
Stripe Rust in Small Grains
Small Grains Treasure Valley - Idaho
Posted on: June 16, 2005 by Jerry Neufeld
Dr. Brad Brown, Cereals Specialist with the U of Idaho at the Parma Research and Extension Center is reporting that stripe rust in spring grains is developing quite rapidly and we are approaching the growth stages that limit spray options. According the to “2005 PNW Plant Disease Handbook,” Headline and Quadris are the only products that can be used to the ”end of flowering” growth stage. In order to maximize yields in cereals it is important to protect the flag leaf from infection.
According to Dr. Brown, the most susceptible soft white spring cereals in the variety trial at the Parma R and E Center are Penewawa, Treasure, White Bird and Jubilee. If you are growing these varieties and haven’t yet scouted your fields, you should do so as soon as possible.
Small Grains Tour
Small Grains Treasure Valley - Idaho
Posted on: June 15, 2005 by Jerry Neufeld
Dr. Brad Brown, Cereals Specialist with the U of Idaho at the Parma Research and Extension Center is hosting a Small Grains Tour at the UI Parma R and E Center on Friday June 24, 2005 starting at 10:00 am. This year the tour provides an excellent opportunity to see the differences in susceptibility of various small grain varieties to stripe rust. A hosted lunch will be served at the conclusion of the tour. If you plan to attend, please call Maurine at 722-6701, ext. 228 to reserve a lunch. Mention the “Small Grains Tour.”
Stripe Rust
All Crops All Locations
Posted on: June 14, 2005 by Jerry Neufeld
Dr. Brad Brown, Cereals Specialist with the U of Idaho at the Parma Research and Extension Center is reporting that stripe rust in spring grains is developing quite rapidly and we are approaching the growth stages that limit spray options. According the to “2005 PNW Plant Disease Handbook,” Headline and Quadris are the only products that can be used to the ”end of flowering” growth stage. In order to maximize yields in cereals it is important to protect the flag leaf from infection.
According to Dr. Brown, the most susceptible soft white spring cereals in the variety trial at the Parma R and E Center are Penewawa, Treasure, White Bird and Jubilee. If you are growing these varieties and haven’t yet scouted your fields, you should do so as soon as possible.
Eminent Registration in Sugarbeets
Sugarbeets All Locations
Posted on: June 14, 2005 by Jerry Neufeld
Dr. John Gallian, Sugarbeet Specialist and Plant Pathologist at the University of Idaho Twin Falls R&E Center posted this message to the UIsugarbeet-INFO digest regarding registration for Eminent Fungicide.
Eminent 125SL (tetraconazole) has been given a 24(c) Special Local Need (SLN) registration for use in Idaho for powdery mildew and Cercospora leafspot control on sugarbeets. This registration will be valid beginning with the 2005 growing season through November 30, 2012.
This registration provides sugarbeet growers with a fungicide for resistance management that has a different mode of action than the strobilurins (Gem and Headline) and the benzimidizoles (Topsin M). Eminent is a sterol demethylation inhibitor (DMI) fungicide and should be applied in tank mix or in alternate applications with non- DMI fungicides. It belongs to the triazole group of fungicides.
Check our website at www.uidaho.edu/sugarbeet under "Pesticides" for more information on resistance management and under "Diseases" for Eminent powdery mildew efficacy data for each year since 2001.
Eminent 125SL is to be applied at 13 fl oz/acre and must be alternated with a non-triazole fungicide which is registered for sugarbeets. For the complete label, you can check the Idaho State Department of Agriculture website www.agri.state.id.us. Follow these links, "Programs & Services" "Pesticides" "Product Registrations" "Section 24c Labels."
Potato late blight forecast
Potato All Locations
Posted on: June 14, 2005 by Jeff Miller
The probability for late blight in southern Idaho is extremely high in 2005. The amount of precipitation and the number of hours favorable for late blight pathogen establishment have been very high all across southern Idaho. The probability of seeing disease ranges from 95-99%. These values are higher than what was observed in the bad late blight years of 1997 and 1998.
Protectant fungicides are very similar to sunscreen in that they wear off over time and only protect where they are applied. If thundershowers persist through the coming weeks, growers are advised to begin spraying at row closure and continue on a weekly schedule for 4 weeks. This can be done using standard protectant fungicides such as EBDC based products or chlorothalonil (See www.ag.uidaho.edu/potatopath/diseases_lateblight_fungicides.htm) While this is an expense most growers have not had in the past, the late blight pathogen does not care, and cool, wet weather can fuel an epidemic similar to what was seen in 1997.
Fungicide stocks will also be low this year due to soybean rust in the Midwestern U.S. Now is the time to line up the fungicides you plan to use this coming year. It is likely that some products may not be available later in the season.
Volunteers and infected tubers from storage pose a threat for establishing an epidemic in 2005. Many commercial storages in southern Idaho have sprouting cull piles even at this late date. Manage cull piles and volunteers in order to minimize the threat of late blight this coming season.
For more information, call University of Idaho Extension personnel at the following numbers:
Treasure Valley: 722-6701 (Mike Thornton)
Magic Valley: 736-3600 or 423-6621 (Nora Olsen)
Eastern Idaho: 529-8376 (Phil Nolte), 785-8060 (Bill Bohl), or 397-4181 (Jeff Miller)
Fireblight
All Crops Treasure Valley - Idaho
Posted on: June 8, 2005 by Steven Reddy
Weiser/Payette fruit grower, Bill Ford reported that his weather station "Cougarblight" model has indicated HIGH risk for fireblight this past week.
Stripe rust
All Crops Eastern Idaho
Posted on: June 8, 2005 by Juliet Windes
Stripe rust continues to spread, now north of American Falls. A Hot Topic Field Day will be held on Friday, June 10, 2005, at Meadows' dryland farm on Misenhimer Lane. Stan Gortsema and Juliet Windes will be on hand for a question and answer session. For additional details and directions, please visit the Southeast Southcentral Cereals Webpage (www.ag.uidaho.edu/scseidaho)
Onion Thrips
All Crops Treasure Valley - Idaho
Posted on: June 6, 2005 by Jerry Neufeld
According to the UC Davis IPM Website (http://www.ipm.ucdavis.edu/PHENOLOGY/ma-onion_thrips.html), over-wintering adult thrips lay eggs in the tissue of plants in the spring. The subsequent generation of onion thrips become adults at about 323 growing degree days. We reached that threshold a few days ago. Right now, both adults and nymphs are being found in onion fields. You should scout your fields now to determine the extent to which you have these pests because thrips populations must be kept in check early to prevent further damage when the onions move into the bulbing stage. If you are one of the growers using drip irrigation and have had success applying Vydate through the drip system now is the time to do so again. For growers using furrow irrigation now is the time to scout your fields and make treatments as necessary.
Small grains stripe rust
Small Grains Eastern Idaho
Posted on: June 3, 2005 by Juliet Windes
Stripe rust of wheat has been found in Power County south of American Falls. Regional conditions continue to be excellent for disease development, with cool wet temperatures favoring disease infection and spread. Fields of Deloris hard red winter wheat south of American Falls are severely affected (up to 80% incidence in some fields), but both spring wheat and winter wheat fields are beginning to show symptoms. Currently, Brundage soft white winter wheat had a minimal amount of visible pustules (about 1%), and no disease was yet found in Weston. Both Brundage and Weston are usually stripe rust susceptible varieties. The hard red spring cultivar Sunstar King was showing a few pustules in large areas where chlorotic plants were visible, similar to a nitrogen deficient crop. Scout such yellowing areas aggressively for signs of pustule development. More information and pictures will be available on the Cereals Agronomy website at http://www.ag.uidaho.edu/scseidaho. Please ! report infections of additional varieties by emailing Juliet Windes at jwindes@uidaho.edu, or by calling 208-529-8376, ext 13 and leaving a message. We need to monitor the area closely to determine if changes in the stripe rust pathogen have left previously resistant varieties susceptible. Current reactions in the Palouse region indicate that the same races of stripe rust are present that were there last year.
Smoke Management Training Sessions
Announcements Treasure Valley - Idaho
Posted on: May 31, 2005 by Jerry Neufeld
The Idaho State Department of Agriculture, Idaho Farm Bureau and the Idaho Grain Producers Association are teaming up to present smoke management training sessions in several Idaho Locations. The training is for farmers who burn residue in their fields. To see the news release click on the “Crop Info,” “Announcements” and “Smoke Management” buttons.
Smoke Management Training Sessions
All Crops Treasure Valley - Idaho
Posted on: May 31, 2005 by Jerry Neufeld
The Idaho State Department of Agriculture, Idaho Farm Bureau and the Idaho Grain Producers Association are teaming up to present smoke management training sessions in several Idaho Locations. The training is for farmers who burn residue in their fields. To see the news release click on the “Announcements” and “Smoke Management” buttons.
Cherry Fruit Fly
Tree Fruits Treasure Valley - Idaho
Posted on: May 31, 2005 by Steven Reddy
Michael Cooper (ISDA) reported a confirmed Cherry Fruit Fly capture in a sticky trap in Gem County.
This capture is close to the Degree Day model prediction calculated on May 21.
Stripe Rust
Small Grains Treasure Valley - Idaho
Posted on: May 31, 2005 by Jerry Neufeld
Recent weather conditions in the Pacific Northwest have been favorable for the development of stripe rust in small grains. Dr. Brad Brown, Cereals Specialist with the U of Idaho at the Parma Research and Extension Center is reporting that small amounts of rust have been found in spring wheat and barley at the Parma Station. In addition, rust has been found in grower fields in the Parma area. The rust infestation in the varieties planted at Parma was minor and would not require control with a fungicide. Most spring wheat varieties planted in the Treasure Valley have good adult plant stripe rust resistance; however, this does not preclude the need for field scouting to determine actual rust conditions in your fields. That is particularly true if you are growing a small grain variety that is not commonly grown in our area and you are not sure of its stripe rust susceptibility. A pdf file with additional information prepared by Washington State University Agronomist John W. Burns can be found by clicking on the “Crop Info” then “Small Grains” buttons.
Cereal Leaf Beetle
Small Grains Treasure Valley - Idaho
Posted on: May 31, 2005 by Jerry Neufeld
Ben Simko, Entomologist with the Idaho State Department of Agriculture has been conducting field work related to Cereal Leaf Beetle at the U of I Parma Research and Extension Center. Ben is reporting that adult CLBs are still mating and laying eggs. In addition, several instars of CLB larvae are finally starting to appear. The cool rainy spring weather we had probably stretched out and flattened the egg hatch peak and subsequent larval instar phenology. This year we haven’t experienced a sharp and distinct CLB egg hatch. Therefore, scouting on spring grain hosts is still recommended over the next couple weeks to assess population levels and potential yield loss.
Small Grains Tour
Small Grains Treasure Valley - Idaho
Posted on: May 31, 2005 by Jerry Neufeld
Dr. Brad Brown, Cereals Specialist with the U of Idaho at the Parma Research and Extension Center is hosting a Small Grains Tour at the UI Parma Center on Friday June 24, 2005 starting at 10:00 am. A hosted lunch will be served at the conclusion of the tour. If you plan to attend, please call Maurine at 722-6701, ext. 228 to reserve a lunch. Mention the “Small Grains Tour.”
Codling moth
Tree Fruits Treasure Valley - Idaho
Posted on: May 26, 2005 by Steven Reddy
Fruit growers should be prepared for large codling moth hatch pressure in the next 1 to 2 weeks. Crop Advisor: Tom Lyon reports that the initial codling moth generation was weak due to cool, wet weather conditions. Conditions now, however, are right for a large larva hatch. Growers should have trees protected with cover sprays.
Cherry Fruit Fly
Tree Fruits Treasure Valley - Idaho
Posted on: May 21, 2005 by Steven Reddy
Degree Day calculations made on May 20th for Western Cherry Fruit Fly (using the OSU On-Line Phenology and Degree Day Models) include:
Payette: 821.1 DD First adult emergence about May 21
Parma: 769.8 DD First adult emergence about May 24
Caldwell: 740.3 DD First adult emergence about May 26
Nampa: 740.1 DD First adult emergence about May 26
Emmett: 678.9 DD First adult emergence about May 29
Chemical control applications are recommended on or before 1060 Degree Days to target egg-laying adult flies (source: Orchard Pest Management).
Codling Moth
Tree Fruits Treasure Valley - Idaho
Posted on: May 19, 2005 by Steven Reddy
Codling moth degree days have been slower to accumulate than anticipated. On 5/18/05 (Parma data) 146 degree days were calculated. First generation egg hatch will begin at approximately 250 degree days.
Growers in the Payette/Fruitland area will meet May 24th to review the anticipated first hatch and control options. If you would like more information on this meeting call Washington Co. Ext. Office (414-0415)
Lygus
Alfalfa Seed Treasure Valley - Idaho
Posted on: May 13, 2005 by Jerry Neufeld
As of today, peak numbers of 1st and 2nd instar lygus are predicted to occur early next week (May 15). You can keep track of degree day accumulations using the OSU web site (http://ippc2.orst.edu/cgi-bin/ddmodel.pl?spp=lyg). Use degree day accumulations as a queue to start lygus scouting activities. Early season lygus threshold is 4-5 lygus nymphs or adults per 180 degree sweep.
Cereal Leaf Beetle
Small Grains Treasure Valley - Idaho
Posted on: May 6, 2005 by Jerry Neufeld
Phil Allison from Landview Fertilizer, Inc is reporting that significant numbers of adult cereal leaf beetles and eggs are being found in grain fields south and east of Nampa. Adults are small beetles about 1/4 to 3/8 inch in size, with a metallic blue head and wing covers, red pronotum, and yellow-orange legs. Eggs are never laid in clusters, but are deposited singly or in rows of up to three or four close to the mid rib on the upper leaf surface of hosts. Eggs can hatch in 4- 23 days depending on the temperatures. Larvae are yellow to yellow-brown with a dark mass of slimy fecal material on their backs. Both adults and larvae feed on leaves. Feeding causes a characteristic stripping of the leaves. Economic thresholds are three larvae or eggs per plant, or one larva per flag leaf.
Codling Moth Biofix Set
Tree Fruits Treasure Valley - Idaho
Posted on: May 5, 2005 by Steven Reddy
Crop Advisor, Tom Lyon reported the first consistent codling moth flight on May 1. This date is being designated as the Codling Moth Biofix date. Growers should contact their crop advisors now to determine codling moth control options. The first generation egg hatch will begin approximately 250 Degree-days after Biofix. Additional Degree-day alerts will be given as we get closer to first hatch.
Onion Maggots
Onion Treasure Valley - Idaho
Posted on: May 4, 2005 by Jerry Neufeld
Lynn Jensen from the Oregon State University, Malheur County Cooperative Extension Office is reporting that onion maggots have been found infesting onion fields in the Weiser, Idaho area. Onion maggot eggs are laid on the soil near the onion plants. Upon emergence, maggot larvae feed on the developing onion roots. Problems are more likely to occur in fields with high amounts of residue.
