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Wheat and Barley Field Tour
Announcements All Locations
Posted on: June 24, 2002 by Jerry Neufeld
Dr. Brad Brown is hosting a Wheat and Barley Variety Review and Field Tour at the Parma Research and Extension Center on June 26, 2002 starting at 9:30 a.m. Topics to be covered are Irrigated Cereal Variety performance and update on Cereal Leaf Beetle. Please RSVP by the end of Tuesday June 24 to reserve a hosted lunch with homemade ice cream. (208.722.6701 ext. 216)
Late Blight on Potato in Washington State
Potato All Locations
Posted on: June 20, 2002 by Brad Geary
Late blight was positively identified in Washington during the first week of June. Since that time more fields have been identified. Late blight has not been found in Idaho or Eastern Oregon. Protective spray programs should be initiated and maintained during the year. Scout fields twice and week and pay particular attention to areas of fields that have, or receive, extra water. If you would like current updates on late blight in Idaho, Washington and Oregon call:
Idaho - 1-800-791-7195
Washington - 1-800-984-7400
Oregon - 1-800-705-3377
Early blight has been found in several Treasure Valley potato fields, and can be monitored while scouting for late blight.
Aphids in Red Clover Seed Fields
Clover Seed none
Posted on: June 18, 2002 by Ben Simko
Lynelle Drake of Andrews Seed Co. reports finding unusual two-aphid species infestations of red clover seed fields near Adrian OR. The species involved in this combo attack are the perennial pest, the clover aphid (a.k.a. clover head aphid) and the cross over pest from alfalfa, the spotted alfalfa aphid. Special attention is required in scouting and insecticide selection if both aphid species are present and damaging clover florets. Contact your seed company agronomist or fieldmen for help in identification and management recommendations.
Adult Western Cherry Fruit Fly Found in traps
Tree Fruits All Locations
Posted on: June 10, 2002 by Tim Davis/Will Cook
An adult Western Cherry Fruit Fly was found in a trap in the Emmett area on June 7th. Cover sprays should be added if not already.
alfalfa weevil
Alfalfa none
Posted on: June 7, 2002 by Jerry Neufeld
Heavy populations of alfalfa weevil are being found in alfalfa hay fields south of Nampa and in the Kuna area. This information provided by Landview Fertilizer.
spotted alfalfa aphid
Alfalfa Seed All Locations
Posted on: June 7, 2002 by Jerry Neufeld
Mike Huff from Dairyland Seed is reporting spotted alfalfa aphids in alfalfa seed field across the Treasure Valley. He is finding both winged and wingless aphids. Mike advises to keep this in mind as you apply clean up sprays.
spotted alfalfa aphid
Alfalfa none
Posted on: June 6, 2002 by Jerry Neufeld
Spotted alfalfa ahpids are being found in new alfalfa hay seedings and alfalfa seed fields south of Nampa at levels requiring treatment. Producers Supply Coop.is reporting this information.
curlytop in sugarbeets
Sugarbeets All Locations
Posted on: June 6, 2002 by Jerry Neufeld
Curlytop virus has been found in sugarbeet fields in several locations around the Treasure Valley. Amalgamated Sugar Company is reporting that the virus is not widespread. Contact your field representative if you have suspect fields.
root maggots
Sugarbeets none
Posted on: June 6, 2002 by Jerry Neufeld
Amalgamated Sugar Company is reporting that a few sugarbeet root maggots are being found in fields in the Parma, Notus, Wilder area. Watch for these insects as insecticides applied at planting may be losing effectiveness.
Cereal Leaf Beetles Infests Winter and Spring Wheat
Small Grains All Locations
Posted on: June 3, 2002 by Ben Simko
A fieldman with Simplot Soil Builders, Ontario has discovered hot spots of Cereal Leaf Beetle (CLB) infestations in spring and winter wheat near Fruitland, Idaho. In these fields egg hatch is complete with the CLB populations predominately in the medium to large size larval stages. An unusually heavy infestation of over 1 larva per flag leaf was observed in a winter wheat field just south of town. Other wheat fields had CLB injury levels ranging from 10 to 50% infested or damaged flag leaves. Fieldmen and growers are advised to monitor populations of CLB larvae to assess potential economic damage to small grains. At this time it is important to prevent damage to the flag leaf as the wheat plant moves from the boot to heading, anthesis, and kernel filling growth stages. See CLB Reference Page for more information on identification, action thresholds and crop protection chemicals.
Colorado Potato Beetle and Volunteer Potatoes
Potato All Locations
Posted on: May 24, 2002 by Brad Geary
Colorado potato beetles have been found on many volunteer plants and in a couple of commercial fields. Populations of beetles are far from economic threshold levels requiring control, however, be mindful of populations within fields so they can be managed properly. Also, it is important to control volunteer potato plants, if not these plants can serve as sources of inoculum for a number of diseases. This includes plants from cull piles. Volunteer potatoes are very competitive for light, water and nutrients, and will cause yield reductions in a crop unless they are controlled.
Clover Seed - Two Spotted Spider Mite
Clover Seed none
Posted on: May 24, 2002 by Jerry Neufeld
Two Spotted Spider Mites have been found in second year clover seed fields in the Marsing area.
Sugarbeet Root Maggot
Sugarbeets All Locations
Posted on: May 23, 2002 by Jerry Neufeld
According to the sugarbeet root maggot growing degree day model developed by Dr. Ed Bechinski from the U of Idaho, we accumulated 360 growing degree days as of May 13, 2002. For the past 7-10 days overwintering root maggot pupa have been emerging as adults and flying. Now is the time to be on the lookout for maggots feeding on sugarbeet roots, especially in replanted fields. Terry Cane from The Amalgamated Sugar Company has already confirmed the siting of adult root maggot flies.
Western Cherry Fruit Fly Activity
Tree Fruits All Locations
Posted on: May 21, 2002 by Tim Davis
Using temperature data from the Caldwell weather station the degree day model is predicting Adult Emergence on May 30, eggs laid on first fruit on June 5, and first egg hatch by June 9. The weather station in Parma is predicting the same dates. The weather station in Ontario predicts all activity four days earlier.
Coddling Moth Degree Days Near 250
Tree Fruits All Locations
Posted on: May 21, 2002 by Tim Davis
As of May 20th the Ontario weather station is reporting 189 degree days and forcasting accumulation of 250 dd's (3% hatch) on May 26. The Caldwell weather station reports 176 dd's and forcasts 250 dd's on May 28. The Parma weather station reports 178 dd's and also forcasts 250 dd's on May 28. Your first cover spray should be prior to these listed dates depending on your location.
Sugarbeet Leafhopper
Sugarbeets All Locations
Posted on: May 17, 2002 by Jerry Neufeld
Terry Cane from the Amalgamated Sugar Company is reporting that sugarbeet leafhoppers have been found in sugarbeet fields at several locations across the Treasure Valley in Idaho and Oregon. Leafhoppers are vectors of the curly top virus. Call your field representative from TASCO for more information.
Cereal Leaf Beetle
Small Grains All Locations
Posted on: May 17, 2002 by Jerry Neufeld
Cereal leaf beetle larvae are being reported south of Nampa, near Middleton, and west of Homedale to the Oregon border. Populations are heaviest in spring grains. U of I Extension Soil and Crop Management Specialist Brad Brown has included a "Cereal Leaf Beetle" update in the latest edition of the Cereal Sentinel (http://agweb.ag.uidaho.edu/swidaho.). Information provided by Land View Fertilizer Inc.
Mormon Crickets
Rangeland All Locations
Posted on: May 16, 2002 by Jerry Neufeld
Michael E. Cooper from the Idaho Department of Agriculture reports Mormon Crickets Emerging En masse' Across the Boise Front.
Mormon Crickets are being reported from the Danskin Mountain/Blacks Creek road area east of Mountain Home to Rocky Canyon outside of Boise and the Summit of Horseshoe Bend Hill on Highway 55. In excess of 24 bands of migrating crickets have been observed between Mayfield and the road to the Danskin Mountains in Elmore County. One of the biggest Bands of migrating crickets is on Horseshoe Bend Hill East of Hwy 55 extending a mile or two up the ridge.
Control measures have been undertaken in Elmore County with more being planned. Boise County has declared a local emergency due to the threat to traffic on Highway 55. Boise County and ISDA officials are reviewing options to see what can be done to prevent the crickets from affecting vehicle traffic on the hill. Large numbers of crickets crushed by passing vehicles can cause hazardous driving conditions by making the road slick.
There have also been reports of crickets in Owyhee County near Murphy.
Alfalfa Weevil Infesting Hay Fields
Alfalfa All Locations
Posted on: May 15, 2002 by Ben Simko
Alfalfa weevil infestations are causing varying degrees of damage to many hay fields in Malheur County. Tim Kurth, Farmers Supply Coop has reported treatable levels of alfalfa weevil in several fields in the Vale area and assisted growers on management decisions. Hay growers are advised to check their fields now to assess weevil infestation levels and decide if treatment is necessary. Weather conditions, plant vigor, irrigation schedules, cutting date, previous history of weevils in the fields are all important factors to determine if treatment is justified. See the Alfalfa Weevil Reference page (click on More information….) for IPM resources.
sugarbeet root maggot
Sugarbeets All Locations
Posted on: May 14, 2002 by Jerry Neufeld
According to the sugarbeet root maggot growing degree day model developed by Dr. Ed Bechinski from the U of Idaho, we have accumulated 360 growing degree days as of May 13, 2002. What this means is that any day now overwintering root maggot pupa will begin to emerge as adults and begin flying. In about 7-10 days maggots will begin feeding on sugarbeet roots. Terry Cane from The Amalgamated Sugar Company has also confirmed the siting of adult root maggot flies. For treatment options see the ?Sugarbeet Root Maggot? reference page.
Lygus Bug - First Hatch
Alfalfa Seed All Locations
Posted on: May 14, 2002 by Ben Simko
Lygus bug degree-day model, through May 13, indicates Ontario and Parma areas have accumulated 225 and 228 degree-day units respectively. Peak first hatch (1st & 2nd instars) is predicted at 275 degree-days and the current forecast indicates peak hatch to occur on or near May 19. Due to cooler weather experienced this spring the 2002 hatch in the Ontario area will be 6 days later than last year and in the Parma area 11 days later than 2001. Small nymphs are beginning to appear in fields in the Adrian, Big Bend, Nyssa, and Ontario areas. Traces of floral buds are starting to also show in established fields. View Lygus Reference Page to find links to degree day calculators, DD maps, and to get daily Lygus heat unit updates for Ontario, OR, Parma, Caldwell, and Boise, ID seed production areas.
Cereal Leaf Beetle
Small Grains none
Posted on: May 14, 2002 by Ben Simko
Cereal Leaf Beetle (CLB) larval hatch is beginning in spring grains, including oats, barley and wheat in the Big Bend - Adrian areas. Adults, eggs and a few early instar larvae were observed, particularly in preferred hosts of oats, oat nurse crop in new alfalfa stands and spring barley. Fieldmen and growers are advised to monitor populations of CLB and the larval hatch to assess potential economic damage to their crop later this season. See CLB Reference Page for more information on identification, action thresholds and crop protection chemicals. USDA APHIS staff are looking for a field in Oregon for potential biocontrol release site of beneficial CLB parasites. For more information contact the Malheur County extension office at 541.881.1417.
Mormon Crickets
Rangeland none
Posted on: May 13, 2002 by Jerry Neufeld
Jim Hipwell of BioFlora Northwest is reporting large bands of Mormon Crickets off Highway 78 southwest of the Murphy Flats area in Owyhee County.
wireworms
Corn All Locations
Posted on: May 10, 2002 by Jerry Neufeld
Wireworms are damaging sweet corn seed fields in the Melba area. According to the literature, corns fields following pasture or alfalfa are most prone to wireworms. Information provided by Terry Drye.
cereal leaf beetle
Small Grains none
Posted on: May 9, 2002 by Jerry Neufeld
Brad Brown, Crop Management Specialist at the UI Parma Research and Extension Center reports there are many adult cereal leaf beetles in spring barley at Parma. He is also finding a few eggs. He has not yet seen any larvae.
