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black bean aphid
Sugarbeets Treasure Valley - Idaho
Posted on: July 23, 2003 by Jerry Neufeld
Amalgamated Sugar Company is reporting that Black Bean Aphids are being found in sugarbeet fields across the Treasure Valley. Growers are often mixing an insecticide with a fungicide for powdery mildew and applying them at the same time. At the present time, Laredo is still not labeled for powdery mildew in sugarbeets in Idaho. ISDA is still waiting for US-EPA to approve the label.
corn earworm
Corn Treasure Valley - Idaho
Posted on: July 21, 2003 by Jerry Neufeld
According to the Oregon State University Growing Degree Day (GDD) model for Corn Earworm we are currently at 1139 GDD in Caldwell and 1272 GDD in the Parma area. First generation moths will begin laying eggs in fresh corn silk at approximately 1300 GDD. Eggs will hatch a few days after reaching 1300 GDD and the larvae will then begin feeding on the corn kernels. The GDD model is predicting we will reach 1300 GDD in Caldwell on July 27 and in Parma on July 22.
cereal leaf beetle
Small Grains Treasure Valley - Idaho
Posted on: July 17, 2003 by Jerry Neufeld
Adult Cereal Leaf Beetles are emerging from the soil and feeding on grasses and young corn. According the U of Idaho CIS 994 “Newly emerged adults feed on a variety of material, but prefer succulent grasses, grain, and young corn.” Their numbers can reach several hundred per plant, but rarely cause economic damage because they feed for such a short time (approximately 2 weeks) before they go into a resting stage. Adults feed entirely through the leaf surface, between the veins, in a straight line. There is only one generation per year.
corn earworm
Corn Treasure Valley - Idaho
Posted on: July 14, 2003 by Jerry Neufeld
According to the Oregon State University Growing Degree Day (GDD) model for Corn Earworm we are currently at 967 GDD in Caldwell and 1097 GDD in the Parma area. First generation moths will begin laying eggs in fresh corn silk at approximately 1300 GDD. Eggs will hatch a few days after reaching 1300 GDD and the larvae will then begin feeding on the corn kernels. The GDD model is predicting we will reach 1300 GDD in Caldwell on July 29 and in Parma on July 23. As we approach 1300 GDD you will want to step up your field scouting and take the appropriate control measures.
powdery mildew in sugarbeets
Sugarbeets Treasure Valley - Idaho
Posted on: July 10, 2003 by Jerry Neufeld
Powdery mildew has been positively identified by Amalgamated Sugar Company Representatives in sugarbeet fields in the Notus, Weiser and Ontario areas. In addition, loopers have been found in several sugarbeet fields around the county. An insecticide for loopers can be tank mixed with a fungicide to treat both pests at the same time.
At the present time, Laredo does not have a label for powdery mildew in sugarbeets in Idaho. ISDA and UI are working with the manufacturer and EPA on this issue. If Laredo does become available I will post that information to this website.
UI Sugarbeet Specialist Dr. John Gallian is recommending that you do not use chemicals with the same mode of action more than once a year on the same fields. In addition, he is recommending that you add 5 pounds of sulfur to each treatment in order to fight resistance.
early blight
Potato Magic Valley
Posted on: July 7, 2003 by Terry Helms
Found Early Blight 7-4-03 in 1 Russet Burbank field near Burley.
Early blight in potatoes
Potato Magic Valley
Posted on: July 7, 2003 by Jeff Miller and Nora Olsen
Early blight has been found in the Magic Valley. The samples had large, black stem lesions similar to late blight. However, distinct early blight lesions were present on the foliage. Although this has been seen only on a limited scale, it stresses the importance to scout fields regularly and to bring in any suspect plant samples into the University of Idaho for confidential evaluation.
powdery mildew in sugarbeets
Sugarbeets Treasure Valley - Idaho
Posted on: July 7, 2003 by Jerry Neufeld
Representatives from Amalgamated Sugar Company are saying that now is the time to be on the lookout for powdery mildew in sugarbeets. Mildew usually shows up first at the western end of the Treasure Valley and moves east. Amalgamated field representatives are closely monitoring the mildew situation, an alert will be posted when the disease is actually found.
Small Grains Field Day
Small Grains Treasure Valley - Idaho
Posted on: July 1, 2003 by Jerry Neufeld
Brad Brown, Extension Crop Management Specialist at the UI Parma Research and Extension Center is hosting a Small Grains Field Day on Tuesday July 8. Topics of discussion on the tour will be variety performance, malting barley issues, barley fractionation, cereal leaf beetle and other small grain issues. The tour starts at 9:00 a.m. at the Parma R and E Center and will end at noon with a lunch sponsored by the Idaho Grain Producers Association.
Green peach aphids found
Potato Magic Valley
Posted on: June 27, 2003 by Jeff Miller
Green peach aphids have been positively identified in both Cassia and Power counties in commercial potato fields. Intensive scouting should be performed and insecticide programs may need to be initiated, depending on cultivar, destination of crop, and previous (at planting or at hilling) insecticide use. Please contact University of Idaho Extension personnel with any specific questions.
Malheur Experiment Station Field Day
Announcements Treasure Valley - Idaho
Posted on: June 25, 2003 by Jerry Neufeld
The Malheur Experiment Station Field day is July 9, 2003. Registration is from 8:30 to 9:00 a.m.; tours begin at 9:00 a.m. Educational topics to be covered on the tour include: Onion Production, Cereal Leaf Beetle, Potato Production, Poplar Production, Drip Irrigation and Sugarbeet Production. Lunch is provided and there will be door prizes for growers only. RSVP to Jan Jones at 541.889.2174 or Janet.Jones@orst.edu.
Malheur Experiment Station Field Day
Announcements Treasure Valley - Oregon
Posted on: June 25, 2003 by Jerry Neufeld
The Malheur Experiment Station Field day is July 9, 2003. Registration is from 8:30 to 9:00 a.m.; tours begin at 9:00 a.m. Educational topics to be covered on the tour include: Onion Production, Cereal Leaf Beetle, Potato Production, Poplar Production, Drip Irrigation and Sugarbeet Production. Lunch is provided and there will be door prizes for growers only. RSVP to Jan Jones at 541.889.2174 or Janet.Jones@orst.edu.
Malheur Experiment Station Field Day
Announcements All Locations
Posted on: June 25, 2003 by Jerry Neufeld
The Malheur Experiment Station Field day is July 9, 2003. Registration is from 8:30 to 9:00 a.m.; tours begin at 9:00 a.m. Educational topics to be covered on the tour include: Onion Production, Cereal Leaf Beetle, Potato Production, Poplar Production, Drip Irrigation and Sugarbeet Production. Lunch is provided and there will be door prizes for growers only. RSVP to Jan Jones at 541.889.2174 or Janet.Jones@orst.edu.
Pests in Mint
Mint Treasure Valley - Idaho
Posted on: June 17, 2003 by Jerry Neufeld
Powdery Mildew and Loopers are being found in mint fields in the Treasure Valley of Idaho. You may want to increase your scouting efforts for these pests and take action as necessary.
Green Peach Aphids
Potato Treasure Valley - Idaho
Posted on: June 17, 2003 by Brad Geary
Green Peach Aphid populations have risen sharply in the Treasure Valley this past week. Please monitor your fields closely to ensure your at-plant insecticides are managing the aphid population. If no at-plant insecticides were used, then monitor fields closely and schedule a foliar insecticide application when green peach aphids are found. Aphids have been found this year in the Magic Valley on cull piles. Volunteer potato plants and cull piles are an excellent source of inoculum, so make sure these unwanted potato plants have been destroyed. There were a lot of volunteer potatoes this year so watch potato fields closely, the aphids may have acquired the virus from the volunteer plants and will enter a field ready to spread a virus.
stripe rust in winter wheat
Small Grains Treasure Valley - Idaho
Posted on: June 4, 2003 by Jerry Neufeld
Stripe rust has been found in a hard red winter wheat being produced for seed in the Treasure Valley. Stripe rust is not a problem for us in most years. It can be a serious problem when we have inoculum, conditions for infection and growth as we've had this spring, and hosts that lack tolerance or resistance. Most of our winter and spring wheat varieties have moderate to good resistance to stripe rust. Of the most commonly planted varieties of winter wheat grown in the Treasure Valley, the variety we should be most concerned about is Brundage. Brundage lacks the stripe rust resistance of Stephens, Madsen, and Malcolm winter wheats, or Alpowa, Centennial, Penawawa, or Treasure spring wheats. Two fungicides are registered for control according to the Pacific Northwest Disease Control Handbook. Quadris can be applied up to late head emergence and can not be applied within 45 days of harvest. Tilt can be used at flag leaf emergence but not later. Much of our winter wheat is beyond this growth stage so we may have missed our opportunity to use these products. Scouting for Stripe rust is appropriate at this time, especially for varieties that may be questionable as to their Stripe rust susceptibility or tolerance. Brad Brown, Specialist at the Parma Research and Extension Center provided this information.
Western Cherry Fruit Fly
Tree Fruits Treasure Valley - Idaho
Posted on: June 3, 2003 by Tim Davis
The Idaho State Department of Ag detected another adult WCFF in a trap near Sunnyslope June 2, 2003. According to the model this is a bit late for the first adult emergence but anyhow your applications should be applied if you have not already done so.
Western Cherry Fruit Fly
Tree Fruits Magic Valley
Posted on: June 3, 2003 by Tim Davis
The Idaho State Department of Ag detected another adult WCFF in a trap near Sunnyslope June 2, 2003. According to the model this is a bit late for the first adult emergence but anyhow your applications should be applied if you have not already done so.
WCFF adult found in Gem County
Tree Fruits Treasure Valley - Idaho
Posted on: May 30, 2003 by Tim Davis
Mike Cooper from the department of Ag found the first Western Cherry Fruit Fly adult in a Cherry Orchard in Gem County Wednesday May 27. The degree-day model was predicting emergence May 28 and first egg laying June 3 so the model was just about right on. Gem county is the latest area around so other areas in the Treasure Valley should have had adults caught by now. Applications should be applied now.
Western Cherry Fruit Fly Spray Dates
Tree Fruits Treasure Valley - Idaho
Posted on: May 27, 2003 by Tim Davis
This is the second alert for the WCFF. Dates have remained close to the estimated dates from the previous alert. These dates are the estimated day for first egg laying. Get your sprays on before this date in your area.
Payette May 27
Parma May 29
Weiser June 2
Caldwell June 3
Emmett June 4
Wheat Curl Mite
Corn Treasure Valley - Idaho
Posted on: May 27, 2003 by Jerry Neufeld
Small numbers of Wheat Curl Mites have been found in a winter wheat field south of Nampa. Infestations of WCM usually occur in the fall; however, if conditions are just right they can overwinter and cause problems in the spring. WCM vector Wheat Streak Mosaic virus and High Plains Disease (HPD) in field and sweet corn. In 1993 HPD affected about 750 acres of sweet corn in Idaho with losses exceeding 50%.
WCM are distributed by wind currents and cannot go for more than about 24 hours without a living host plant. They must have a ?green bridge? in order to move from one living host to another. Hosts are cereals or young grasses in fields or adjacent to fields. In southwest Idaho HPD has been documented in sweet corn fields that were near a wheat field infested with WCM. The incidence of disease diminished as the distance from the wheat field increased. Please check out the Wheat Curl Mite reference page for more information.
cereal leaf beetle
Small Grains Treasure Valley - Idaho
Posted on: May 27, 2003 by Jerry Neufeld
Cereal Leaf Beetle larvae are being found in winter wheat and winter barley fields south of Nampa and south of Marsing. This pest is found in grain fields in nearly all areas of the Treasure Valley.
Codling Moth Spray Dates
Tree Fruits Treasure Valley - Idaho
Posted on: May 22, 2003 by Tim Davis
According to the degree-day model from the OSU Extension Website
(http://ippc2.orst.edu/cgi-bin/ddmodel.pl?clm)
these are the forecasted dates for the Codling Moth. These dates were determined using actual temperature from these locations up to May 20th and forecasted temperatures thereafter. Date of spray allpication is achieved when 250 degree days are reached after biofix. The biofix date was set for May 2 when Tom Lyon found a consistant catch in a trap near Payette. There was a week of a cold spell where there was not much activity and then more consistant catches during the second week in May but to avoid early stings I reverted back to May 2 for all areas.
Payette: May 28
Parma: May 30
Caldwell: May 30
Weiser: May 31
Emmett: June 1
Spray applications should be applied before these dates in your area.
Western Cherry Fruit Fly Forcasted Spray Dates
Tree Fruits Treasure Valley - Idaho
Western Cherry Fruit Fly
Posted on: May 16, 2003 by Tim Davis
According to the degree-day model from the OSU Extension Website (http://ippc2.orst.edu/cgi-bin/ddmodel.pl?spp=cff)
these are the forecasted dates for the Western Cherry Fruit Fly. These dates were determined using actual temperature from these locations up to May 15 and forecasted temperatures thereafter. Chemical control should be applied before the eggs are laid.
Location First Adults Emerge First Eggs laid on Fruit
Parma 5/21 5/28
Payette 5/21 5/30
Weiser 5/26 6/1
Caldwell 5/25 6/4
Emmett 5/28 6/4
sugarbeet root maggot
Sugarbeets Treasure Valley - Idaho
Root Maggot
Posted on: May 16, 2003 by Jerry Neufeld
Amalgamated Sugar Company is reporting that a few sugarbeet root maggot flies have been found on sticky stakes in Elmore and Owyhee counties. No flies have been caught in the Nampa/Caldwell area. According to the growing degree day model, peak flight for the flies will occur in the next few days.
