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western corn rootworm and wireworms
Corn Treasure Valley - Idaho
Posted on: June 8, 2004 by Jerry Neufeld
In the past few days I received a couple of calls about larvae feeding on corn roots and stems. In both cases the fields were a rotation of corn following corn. In one case the field had uncomposted manure applied to it. Be on the lookout for western corn rootworm larvae and/or wireworms in your cornfields, especially if you have fields in continuous corn, fields high in organic matter or corn following pasture or alfalfa.
Colorado Potato Beetle
Potato Magic Valley
Posted on: June 4, 2004 by Terry Helms
Colorado Potato Beetle adults have been abundant in fields South of Burley
for about a week. No egg activity as of yet.
Colorado Potato Beetle
Potato Treasure Valley - Idaho
Posted on: June 3, 2004 by Jerry Neufeld
Adult Colorado Potato Beetles have been laying eggs for a while now. Growers need to watch fields closely for the egg hatch as the first generation larvae can cause a lot of defoliation damage. Several of the control options also need to be timed to coincide with the appearance of the larvae. Thanks to Mike Thornton at the U of I Parma Research and Extension Center for this information.
Parma Research and Extension Field Day
Announcements Treasure Valley - Idaho
Posted on: June 3, 2004 by Jerry Neufeld
The U of Idaho Parma Research and Extension Center is hosting an Open House and Field Day on Tuesday June 29, 2004. Registration begins at 8:00 am. The program will conclude by 1:30 p.m. Lunch is being provided at no cost to participants by the local agriculture industry. Recertification credits may be offered. Call 722-6701 if you have questions.
Pesticide Disposal
Announcements Treasure Valley - Idaho
Posted on: May 14, 2004 by Jerry Neufeld
IDAHO STATE DEPARTMENT OF AGRICULTURE’S SPRING PESTICIDE DISPOSAL PROGRAM
Collections scheduled for northern and southwest Idaho are safe, legal and free
BOISE, Idaho – Agricultural producers, dealers, applicators and homeowners who are storing unusable pesticides will have a safe, legal and free opportunity to dispose of them this May when the Idaho State Department of Agriculture conducts collections in Bonners Ferry, Coeur d’Alene, Lewiston, Weiser and Caldwell, Idaho.
Participation is free for the first 1,000 pounds of unusable pesticides per participant. Anyone with unusable herbicides, insecticides, fungicides and rodenticides should bring them to the closest collection site between the hours of 9:00 a.m. and 1:00 p.m. on the date and location listed below (Sorry no fertilizer, micronutrients, paint, solvents, or equipment or motor oil can be accepted):
May 20, Weiser, IDOT Yard
May 21, Caldwell, Canyon County Fairgrounds
“These collections provide a mechanism for disposing of chemicals in an environmentally sound manner. The unusable pesticides collected in May will be incinerated or otherwise destroyed,” said Victor Mason II, manager of the department’s pesticide disposal and container recycling programs.
Since 1993, the Idaho State Department of Agriculture has disposed of more than half million pounds of unusable chemicals. Pesticides become unusable for many reasons, including loss of potency, exposure to temperature extremes, cancellation or suspension by state or federal authorities, or growers’ decisions to change their cropping rotations or practices.
Assistance in the identification of unknown pesticides and other information about the collections is available at http://www.agri.state.id.us/agresource/pdp.htm.
For further information contact Victor Mason II at 465-8442.
Mint
Mint Treasure Valley - Idaho
Posted on: May 10, 2004 by Jerry Neufeld
Producers Supply Coop field representatives are reporting that powdery mildew has been found in mint fields south of Nampa and in the dry lake area.
Western Cherry Fruit Fly Emergence Dates
Tree Fruits Treasure Valley - Idaho
Posted on: May 5, 2004 by Tim Davis
As of today May 5th we are currently at 730 degree days for the Western Cherry Fruit Fly in the Caldwell area and the model is predicting accumulations of 1060dd on May 22nd. In the Emmett are we are currently at 700dd and the model is predecting accumulations of 1060dd on May 25th. In the Payette area we are currently at 760dd and the model is predicting 1060dd on May 21st. A cover spray should be applied on or before 1060dd to target mature, egg-laying flies.
Codling Moth Larval Emergence Date
Tree Fruits Treasure Valley - Idaho
Posted on: May 5, 2004 by Tim Davis
As of today May 5th we are currently any where from 150-185 degree-days for the Codling Moth. This range depends on when your biofix was set and the area you are in. The model is predicting larval emergence (250dd) any where from May 12-15 again depending on you local temperature and biofix date. The Fruitland/Payette area is on the earlier end of the prediction as it has been a bit warmer here this year. The Caldwell area is on the later end of this prediction. Plan your cover sprays accordingly and DONT BE LATE!
soybean rust in beans
Dry Beans Treasure Valley - Idaho
Posted on: May 5, 2004 by Jerry Neufeld
Following is information provided by Melodie Putnam of the Oregon State University Plant Clinic.
Soybean rust is an exotic pathogen that is not established in the continental U.S. It has recently moved north of the equator, and is currently in Brazil, Argentina and Paraguay. Like other rust diseases (such as wheat rusts), this disease can move long distances in air currents, and is expected to reach the U.S. soon.
Why should we in the West care about soybean rust? Because it also goes to yellow sweet clover (Melilotus officinalis), vetch (Vicia dasycarpa), lupine (Lupinus hirsutus), green and kidney bean (Phaseolus vulgaris), lima and butter bean (Phaseolus lunatus) and cowpea or backeyed pea (Vigna unguiculata). Soybean rust can cause severe defoliation and loss of yield in susceptible crops. Therefore, early detection is essential.
Soybean rust is a Federal quarantine status pathogen, but there are no plans for eradication of infected crops. Instead, it has been shown that once an infestation of soybean rust is detected, if early enough, effective control can be obtained with carefully timed fungicide applications. Detection early in the season with properly timed application of fungicides appears to present the best alternative for controlling soybean rust in the United States. It is particularly important to limit the spread of this disease, due to its destructive potential.
Please be alert to the possibility of this rust moving into bean, lupin and other susceptible crops. For more information on soybean rust, including a list of hosts and photographs of symptoms, see http://www.aphis.usda.gov/ppq/ep/soybean_rust/.
Oregon growers should contact the OSU Plant Clinic for information on how to proceed if soybean rust is suspected in their crops. Please contact:
Melodie Putnam
OSU Plant Clinic
1089 Cordley Hall
Corvallis, OR 97331-2903
541-737-3472
Growers in other states should contact their own university or state departments of agriculture diagnostic laboratories.
Lygus bug
Alfalfa Seed Treasure Valley - Idaho
Posted on: May 5, 2004 by Jerry Neufeld
According to the lygus bug degree day model we should be seeing peak numbers of 1st and 2nd instar lygus nymphs from the 1st generation lygus hatch right now. We are a full 10 -14 growing degree days ahead of average this year depending on your location. The 1st generation lygus hatch usually peaks in mid-May. Now is a good time to scout your fields and determine your treatment needs. With the continued heat insect growth will be rapidly proceeding. Check your fields at least once a week if possible, more if you are approaching the threshold of 4 lygus per sweep. Small instars (1, 2, & 3) are easier to control than large instars (4 & 5) or adults. Bigeyed bugs, damsel bugs and minute pirate bugs are also out early so watch for these beneficial insects. If the population of bigeyed bugs plus damsel bugs is twice the number of lygus bugs, and your lygus numbers are not increasing, you may not need to treat.
cereal leaf beetle
Small Grains Treasure Valley - Idaho
Posted on: April 29, 2004 by Jerry Neufeld
Cereal leaf beetle larvae are beginning to hatch from eggs laid in small grain fields in the Parma area. You will want to scout your fields for the larvae since they are now widespread across the Treasure Valley.
onion bulb mite
Onion Treasure Valley - Idaho
Posted on: April 21, 2004 by Jerry Neufeld
Mike Thornton, Superintendent of the U of Idaho Parma Research and Extension Center, is reporting that onion bulb mites are feeding on onion seedlings in Parma area onion fields. Mite pressure is severe enough to damage stands.
Onion Maggot
Onion Treasure Valley - Oregon
Posted on: April 21, 2004 by Clint Shock
Onion maggot has been identified north of Vale, OR in seedling onion fields.
Onion Maggot
All Crops Treasure Valley - Oregon
Posted on: April 21, 2004 by Clint Shock
Onion maggot has been identified north of Vale, OR in seedling onion fields.
sugarbeet root maggots
Sugarbeets Treasure Valley - Idaho
Posted on: April 20, 2004 by Jerry Neufeld
Amalgamated Sugar Company field representatives are reporting that sugarbeet root maggot flies have been spotted in the Ontario and Wieser areas. If you have not yet applied a treatment for sugarbeet root maggots do so as soon as possible. Contact your field representative for treatment options.
cutworms
Sugarbeets Treasure Valley - Idaho
Posted on: April 20, 2004 by Jerry Neufeld
Amalgamated Sugar Company field representatives are reporting cutworms in many sugarbeet fields across the Treasure Valley. Infestations are worst in fields where sugarbeets are following grain or corn, or those fields that have had mint sludge applied to them.
Onion Bulb MIte
Onion Treasure Valley - Oregon
Posted on: April 15, 2004 by Mick Warden & Lynn Jensen
Onion Bulb Mite in Fruitland - New Plymouth area is causing some stand loss to new seedling onions.
Lygus Bug in Alfalfa Seed
Alfalfa Seed Treasure Valley - Idaho
Posted on: April 14, 2004 by Jerry Neufeld
Jim Barbour from the U of I Parma Research and Extension Center is reporting that the warm weather this spring has resulted in rapid lygus bug development. He is already seeing a few 1st and 2nd instars in alfalfa seed at the Parma R & E Center. The Lygus Degree Day Model (http://ippc2.orst.edu/cgi-bin/ddmodel.pl?spp=lyg) is predicting peak 1st and 2nd instar lygus nymphs from 1st generation lygus near April 29. This is about two weeks earlier than usual (last year’s date was May 23) and could change if the weather cools. Set back operations should lower lygus bug populations a bit, but it’s a good idea to be on the lookout for them. Jim has seen some predators, nabid bugs, minute pirate bugs, and bigeyed bugs early as well.
Lygu Bug in Alfalfa Seed
All Crops Treasure Valley - Idaho
Posted on: April 14, 2004 by Jerry Neufeld
Jim Barbour from the U of I Parma Research and Extension Center is reporting that the warm weather this spring has resulted in rapid lygus bug development. He is already seeing a few 1st and 2nd instars in alfalfa seed at the Parma R & E Center. The Lygus Degree Day Model (http://ippc2.orst.edu/cgi-bin/ddmodel.pl?spp=lyg) is predicting peak 1st and 2nd instar lygus nymphs from 1st generation lygus near April 29. This is about two weeks earlier than usual (last year’s date was May 23) and could change if the weather cools. Set back operations should lower lygus bug populations a bit, but it’s a good idea to be on the lookout for them. Jim has seen some predators, nabid bugs, minute pirate bugs, and bigeyed bugs early as well.
Cereal Leaf Beetle
Small Grains Treasure Valley - Idaho
Posted on: April 12, 2004 by Jerry Neufeld
Brad Brown from the U of I Parma Research and Extension Center is reporting considerable Cereal Leaf Beetle adult feeding and also CLB eggs in the New Plymouth area in fall planted triticale. He is also finding CLB eggs and adult feeding on spring oats in the Parma area. Feeding is more severe on spring planted oats than on the fall planted barley. Small grain producers should be scouting for the adult feeding and eggs to get some idea of the larvae populations to expect when the larvae emerge from the eggs. The egg threshold is three per plant including all the tillers on the plant. Images of eggs can be found on the CLB reference page.
Cereal Leaf Beetle
Small Grains Treasure Valley - Idaho
Posted on: April 7, 2004 by Jerry Neufeld
Brad Brown, UI Crop Management Specialist, is reporting that adult cereal leaf beetles are beginning to emerge and have begun flying around the western Treasure Valley of Idaho. Overwintering adults begin flying and mating when daytime temperatures reach 66 degrees F. Egg laying on host plants will take place within about 10 days of emergence. Preferred hosts are spring seeded small grains, especially oats and barley. Eggs take from 4 to 23 days to hatch depending on temperature. Scouting for eggs early will give you an idea of the damaging larval population you can expect in May.
Sugarbeet Root Maggot
Sugarbeets Treasure Valley - Idaho
Posted on: April 7, 2004 by Jerry Neufeld
Dennis Searle, Agronomist with AMSCO is reporting that due to the warm weather we are running about 10 growing degree days ahead of last year. This means that very soon overwintering root maggot pupa will begin emerging as adults and begin flying. In 2003 the peak capture of maggot flies was about May 13 in the Caldwell vicinity according to the sugarbeet root maggot growing degree day model developed by Dr. Ed Bechinski from the U of Idaho. In 2004 the same model is predicting peak capture of maggot flies on about April 22. Dennis thinks we will see flies flying within about 10 days, and maggots feeding on sugarbeets by the end of April. 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 crop advisor or field representative from AMSCO for treatment options.
cereal leaf beetle
All Crops Magic Valley
Posted on: April 7, 2004 by Jerry Neufeld
Brad Brown, UI Crop Management Specialist, is reporting that adult cereal leaf beetles are beginning to emerge and have begun flying around the western Treasure Valley of Idaho. Overwintering adults begin flying and mating when daytime temperatures reach 66 degrees F. Egg laying on host plants will take place within about 10 days of emergence. Preferred hosts are spring seeded small grains, especially oats and barley. Eggs take from 4 to 23 days to hatch depending on temperature. Scouting for eggs early will give you an idea of the damaging larval population you can expect in May.
sugarbeet root maggot
All Crops Treasure Valley - Idaho
Posted on: April 6, 2004 by Jerry Neufeld
Dennis Searle, Agronomist with AMSCO is reporting that due to the warm weather we are running about 10 growing degree days ahead of last year. This means that very soon overwintering root maggot pupa will begin emerging as adults and begin flying. In 2003 the peak capture of maggot flies was about May 13 in the Caldwell vicinity according to the sugarbeet root maggot growing degree day model developed by Dr. Ed Bechinski from the U of Idaho. In 2004 the same model is predicting peak capture of maggot flies on about April 22. Dennis thinks we will see flies flying within about 10 days, and maggots feeding on sugarbeets by the end of April. 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 crop advisor or field representative from AMSCO for treatment options.
