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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.
Sugarbeet Root Maggot
Sugarbeets Treasure Valley - Idaho
Posted on: May 2, 2005 by Jerry Neufeld
According to a representative from Amalgamated Sugar Company, growing degree day models indicate that adult sugarbeet root maggot flies will begin their spring emergence and begin flying in the very near future. Adult flies will lay eggs near sugarbeet plants. After the larvae hatch they will begin feeding on the young sugarbeets. AMSCO representatives have not seen any adult flies yet, but warn they will be flying any day now. 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.
Lygus
Alfalfa Seed Treasure Valley - Idaho
Posted on: April 25, 2005 by Jerry Neufeld
Cool weather during March and April has slowed degree day accumulations to something approaching normal. Peak numbers of 1st and 2nd instar lygus are now predicted to occur during the 3rd week of May (May 17 as of this morning). 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 an indicator of when to start lygus scouting activities. The early season lygus threshold is 4-5 lygus nymphs or adults per 180 degree sweep.
Onion Bulb Mite
Onion Treasure Valley - Idaho
Posted on: April 22, 2005 by Jerry Neufeld
Charlie Robinson with Western Farm Service in Parma is reporting that onion bulb mites have been found in onion fields southwest of Caldwell. In one case there is an estimated 30% stand loss. The mites were positively identified by U of I Extension Pathologist Krishna Mohan. Dr. Mohan said that with the wet/cool weather we have been having, a stand loss such as that caused by the mites can be confused with ”damping off.” He warns that if you are experiencing onion stand loss, it may not be “damping off” it may be bulb mites. Positive identification of mites needs to be made by using a microscope to examine either undecayed vegetation from the field or the onions. Fields that have a history of bulb mite problems, or onion fields with undecayed vegetative matter are more prone to these pests. No treatment thresholds exist and there are no in-season treatments available. Preventative soil fumigation treatments can help to control this pest.
Onion Bulb Mite
All Crops Treasure Valley - Idaho
Posted on: April 22, 2005 by Jerry Neufeld
Charlie Robinson with Western Farm Service in Parma is reporting that onion bulb mites have been found in onion fields southwest of Caldwell. In one case there is an estimated 30% stand loss. The mites were positively identified by U of I Extension Pathologist Krishna Mohan. Dr. Mohan said that a stand loss such as that caused by the mites can be confused with ”damping off.” He warns that if you are experiencing onion stand loss, it may not be “damping off” it may be bulb mites. Positive identification of mites needs to be made by using a microscope to examine either undecayed vegetation from the field or the onions. Fields that have a history of bulb mite problems, or onion fields with undecayed vegetative matter are more prone to these pests. No treatment thresholds exist and there are no in-season treatments available. Preventative soil fumigation treatments can help to control this pest.
Cutworms in Vineyards
All Crops Treasure Valley - Idaho
Posted on: April 21, 2005 by Jerry Neufeld
Charlie Robinson with Western Farm Service in Parma is reporting that cutworms have been found in established vineyards in the Sunnyslope area. The worms are found in cracks in the soil or under debris during the day, and climb the vines to feed on developing buds and shoots at night.
Onion Bulb Mites
All Crops Treasure Valley - Idaho
Posted on: April 21, 2005 by Jerry Neufeld
Charlie Robinson with Western Farm Service in Parma is reporting that onion bulb mites have been found in onion fields southwest of Caldwell. In one case there is an estimated 30% stand loss. The mites were positively identified by U of I Extension Pathologist Krishna Mohan. Dr. Mohan said that ”damping off” has been a problem in onions this spring. However, he warned if you are experiencing onion stand loss, it may not be “damping off” it may be bulb mites. Positive identification of mites needs to be made by using a microscope to examine either undecayed vegetation from the field or the onions. Fields that have a history of bulb mite problems, or onion fields with undecayed vegetative matter are more prone to these pests. No treatment thresholds exist and there are no in-season treatments available. Preventative soil fumigation treatments can help to control this pest.
Onion Bulb Mite
All Crops Treasure Valley - Idaho
Posted on: April 21, 2005 by Jerry Neufeld
Charlie Robinson with Western Farm Service in Parma is reporting that onion bulb mites have been found in onion fields southwest of Caldwell. In one case there is an estimated 30% stand loss. The mites were positively identified by U of I Extension Pathologist Krishna Mohan. Dr. Mohan said that ”damping off” has been a problem in onions this spring. However, he warned if you are experiencing onion stand loss, it may not be “damping off” it may be bulb mites. Positive identification needs to be made by using a microscope to examine either undecayed vegetation from the field or the onions. Fields that have a history of bulb mite problems, or onion fields with undecayed vegetative matter are more prone to these pests. No treatment thresholds exist and there are no in-season treatments available. Preventative soil fumigation treatments can help to control this pest.
Onion Bulb Mite
All Crops Magic Valley
Posted on: April 21, 2005 by Jerry Neufeld
Charlie Robinson with Western Farm Service in Parma is reporting that onion bulb mites have been found in onion fields southwest of Caldwell. In one case there is an estimated 30% stand loss. The mites were positively identified by U of I Extension Pathologist Krishna Mohan. Dr. Mohan said that ”damping off” has been a problem in onions this spring. However, he warned if you are experiencing onion stand loss, it may not be “damping off” it may be bulb mites. Positive identification needs to be made by using a microscope to examine either undecayed vegetation from the field or the onions. Fields that have a history of bulb mite problems, or onion fields with undecayed vegetative matter are more prone to these pests. No treatment thresholds exist and there are no in-season treatments available. Preventative soil fumigation treatments can help to control this pest.
Onion Bulb Mites
All Crops Treasure Valley - Idaho
Posted on: April 20, 2005 by Jerry Neufeld
Charlie Robinson with Western Farm Service in Parma is reporting that onion bulb mites have been found in onion fields southwest of Caldwell. In one case there is an estimated 30% stand loss. The mites were positively identified by U of I Extension Pathologist Krishna Mohan. Krishna said that ”damping off” has been a problem in onions this spring. However, he warned if you are experiencing onion stand loss, it may not be “damping off” it may be bulb mites. Positive identification needs to be made by using a microscope to examine either undecayed vegetation from the field or the onions. Fields that have a history of bulb mite problems, or onion fields with undecayed vegetative matter are more prone to these pests. No treatment thresholds exist and there are no in-season treatments available. Preventative soil fumigation treatments can help to control this pest.
Cereal Leaf Beetle
Small Grains Treasure Valley - Idaho
Posted on: April 19, 2005 by Jerry Neufeld
Brad Brown, Cereals Specalist with the U of Idaho at the Parma Research and Extension Center is reporting he has found cereal leaf beetle eggs in spring planted grains. He has also seen quite a few adult beetles in flight. Eggs will hatch in 4- 23 days depending on the temperature and then larvae will begin feeding on the leaves.
Pesticide Disposal Program
Announcements Treasure Valley - Idaho
Posted on: April 14, 2005 by Jerry Neufeld
IDAHO STATE DEPARTMENT OF AGRICULTURE’S PESTICIDE DISPOSAL PROGRAM
IT’S FREE AND EASY!
JUST BRING YOUR UNUSABLE PESTICIDES TO ONE OF THESE SITES
THE FIRST 1,000 POUNDS ARE FREE
CALDWELL, MAY 16, 2005, CANYON COUNTY FAIRGROUNDS
111 22ND Ave. South in Caldwell, ID 83605
WEISER, MAY 17, 2005, IDAHO DEPT. OF TRANSPORTATION YARD
550 Indian Head Rd in Weiser, ID 83672
Please check with the Idaho State Department of Agriculture (ISDA) office nearest you or with the Boise office to confirm dates, or for additional information about these collections.
All collections will run from 9:00 a.m. to 1:00 p.m. each day.
We can only collect pesticides – no fertilizer, paints or oils can be accepted.
Nampa office- Victor Mason II at (208) 465-8442; Bob Hays (208) 442-2803; Fred Rios (208) 442-2816; Dave Chase (208) 465-8482; or Luis Urias (208) 465-8478
Boise office Cathy Parsons (208) 332-8605
Cereal Leaf Beetle
Small Grains Treasure Valley - Idaho
Posted on: April 14, 2005 by Jerry Neufeld
The cereal leaf beetle larval hatch will start in the very near future. Brad Brown from the U of I’s Parma Research and Extension Center has found adults on the ground. He has seen a few adults in flight. In addition, Landview Fertilizer field representatives have seen a few adults in grain fields south of Nampa. As temperatures warm up we can expect to see the adults become very active.
Adult Cereal Leaf Beetles will lay eggs in winter grains first. However, as spring grains (oats, barley, wheat) grow larger, the beetles will move to spring grain fields because they are the preferred hosts. 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. Scouts should be looking for adults and eggs at this point and not the larvae. 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.
Cutworms
Sugarbeets Treasure Valley - Idaho
Posted on: April 14, 2005 by Jerry Neufeld
Representatives from Amalgamated Sugar Company are reporting they have found a few sugarbeet fields around the valley that are being damaged by cutworms. Weedy spots and field borders are typically “hot spots” for these pests.
Cutworms
All Crops Magic Valley
Posted on: April 14, 2005 by Jerry Neufeld
Representatives from Amalgamated Sugar Company are reporting they have found a few sugarbeet fields around the valley that are being damaged by cutworms. Weedy spots and field borders are typically “hot spots” for these pests.
Cereal Leaf Beetle
All Crops Treasure Valley - Idaho
Posted on: April 14, 2005 by Jerry Neufeld
The cereal leaf beetle larval hatch will start in the very near future. Brad Brown from the U of I’s Parma Research and Extension Center has found adults on the ground. He has seen a few adults in flight. In addition, Landview Fertilizer field representatives have seen a few adults in grain fields south of Nampa. As temperatures warm up we can expect to see the adults become very active.
Adult Cereal Leaf Beetles will lay eggs in winter grains first. However, as spring grains (oats, barley, wheat) grow larger, the beetles will move to spring grain fields because they are the preferred hosts. 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. 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.
Alfalfa and Clover Seed PMSP
Alfalfa Seed Treasure Valley - Idaho
Posted on: April 13, 2005 by Jerry Neufeld
The Pest Management Strategic Plan for Western U.S. Alfalfa and Clover Seed Production has been completed and posted on the internet at http://pestdata.ncsu.edu/pmsp/index.cfm. The plan can also be accessed by going to AlfalfaSeed.org and clicking on “Offsite Links” followed by clicking on the “Alfalfa Seed Pest Management” link.
Alfalfa Seed Pests
Alfalfa Seed Treasure Valley - Idaho
Posted on: April 12, 2005 by Jerry Neufeld
Brad Chambers from Pioneer Hi-Bred is reporting that cutworms and pea leaf weevils are starting to show up in new stands of alfalfa seed. Adult pea leaf weevils are grayish brown, slender weevils about 5 mm long, with a short snout. Adults chew notches out of alfalfa leaflet margins and sometimes can defoliate new seedling alfalfa causing serious stand loss. First reports of damage were in the Wilder area, but both pests have been found in the Nampa area also.
Season start up message
Announcements All Locations
Posted on: April 12, 2005 by Jerry Neufeld
Dear Pest Alert Subscriber;
The growing season in the Treasure Valley began in early March this year. By now a lot of crops have been planted and are emerging. It won’t be long before planting is in full swing across all of Idaho and pests start showing up.
At the present time there is quite a bit of uncertainty in production agriculture related to markets and water supplies. Because of these challenges, Sugar Magazine Editor Gary Rawlings wrote an article entitled “Whatever You Do, Don’t Cut Inputs” The article appeared in the February 2005 issue. In his article about sugarbeets, Rawlings says “weed, disease, and insect control products must be used. Shortcuts cannot be taken. It’s only the tonnage that will matter next fall with acres being eliminated.” Our goal with TV/PNWPestAlert.net is to inform you about pest problems in a timely manner. With earlier warning of pest problems, you can make more informed decisions that will help maximize use of your inputs.
The 2004 evaluation of TV/PNWPestAlert.net was favorable. Below are some of the comments subscribers submitted with the evaluation.
“I improved the timeliness of my chemical applications and improved my scouting methods because of the pest alert network.”
“Helped me to watch for mildew in beets for better timing. Helped in timing of field scouting for peach aphid in potatoes.”
“I improved the timeliness and reduced the number of my applications, the program felt like another set of eyes watching out for my crops.”
“I had more timely scouting activities as a result of knowing the status of lygus and powdery mildew.”
As you can see from the comments above, TV/PNWPestAlert.net is a valuable resource for the agriculture industry in Idaho and Oregon. As website administrators, we value and need your continued assistance. When pest outbreaks occur in 2005, please provide this information to one of us as quickly as possible so the information can be quickly posted to the website. In addition, please tell your neighbors or clients about the website. The more participation we have the better.
TV/PNWPestAlert.net would not be possible without our sponsors. Last year’s sponsors were the Idaho Alfalfa and Clover Seed Commission, the Idaho Sugarbeet Industry and the Idaho Potato Commission. We would like to extend a sincere thank you to them for their generous support. We are currently in the process of lining up sponsors for 2005.
Once again, thanks to everyone who has helped to make TV/PNWPestAlert.net a success. We wish each of you a safe and prosperous production season.
Sincerely,
Jerry Neufeld
Steve Reddy
Jeff Miller
Nora Olsen
William Bohl
Bryan Hopkins
Juliet Windes
Clint Shock
Lynn Jensen
