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Potato Disease Management Meeting
Sugarbeets All Locations
Posted on: November 22, 2005 by Jeff Miller
University of Idaho Crop Consultant Training Workshop
December 14, 2005
Best Western Conference Center
800 N. Overland Ave.; Burley, ID
For all potato growers and consultants:
Come to learn the latest information on managing diseases of potato. Presentations will be given on managing soilborne, foliar, and storage diseases of potatoes.
Agenda:
8:30-9:30: Managing Rhizoctonia canker in potato
9:30-10:30: Managing foliar diseases (white mold, early blight, and late blight with some information on black dot)
10:30-12:00: Managing storage diseases of potato (pink rot, leak, silver scurf, and dry rot)
Presentations will be given by Dr. Jeff Miller (University of Idaho) and Dr. Terry Miller (Miller Research, Inc.) and will focus on new results from fungicide trials relating to product rates, fungicide application timing and methods, and strategies for avoiding the development of fungicide resistance in pest populations.
Please contact Jeff Miller at 208-397-4181 for further information.
NRCS Cost sharing for biofumigation and field scouting
Announcements All Locations
Posted on: November 8, 2005 by Jerry Neufeld
The Natural Resources Conservation Service has approved two pest management practices for EQIP cost sharing. Producers must sign up by NOVEMBER 22, at their local NRCS Field Office.
The two Pest Management practices are:
1. Biofumigation. This is the planting of either radish or mustard as a green manure crop preceding potatoes or sugarbeets. The crop is planted following an early harvest crop such as wheat. Trials conducted in 2003 and 2004 show biofumigation costs the farmer about $120 to $140 per acre. Farmers using biofumigation have seen significant decreases in nematode populations and increases in potato yields, without using chemical fumigants. The practice will pay a flat rate of $50/Ac and is limited to a maximum of 160 acres.
2. Field Scouting. It was agreed that NRCS needs to promote the use of field scouting for insects to determine if threshold numbers are exceeded prior to making the decision to apply pesticides. This practice is limited only to insect pests -- not weeds. The scouting must be done by a qualified (certified) individual (likely a crop consultant or CCA). Submission of scouting and insecticide records will be required. This practice will pay $10/Ac and is limited to 160 acres.
Producers should contact their County NRCS Field Office by NOVEMBER 22 and sign up to participate in an EQIP contract. After the signup, NRCS will contact interested producers and work with them to develop an EQIP contract. These two pest management practices will be part of their contract along with other conservation practices they may be interested in.
Potato Tuberworm
Potato All Locations
Posted on: October 14, 2005 by Jerry Neufeld
Potato tuberworm, also commonly called the tuber moth, is a relatively new pest of concern in the Pacific Northwest. Several tuber moths were recently collected near Parma in a trapping system established by the University of Idaho with funding from the Idaho Potato Commission. The Idaho State Department of Agriculture has responded by developing a more extensive set of traps throughout southern Idaho. While we don’t yet know what these isolated findings of tuberworm adults in Idaho mean, we do know that tuberworm damage if left unchecked can reduce the value of a potato crop more drastically than just about any other pest. Therefore, it is important that growers and fieldrepresentatives stay informed about this pest and focus on the best management practices that have been established for the control of potato tuberworm. Background information on the pest and results of the University of Idaho trapping program are available at http://www.uidaho.edu/so-id/entomology/. Best management practices and general information on potato tuberworm can be found at www.agri.state.id.us/Categories/PlantsInsects/RegulatedAndInvasiveInsects/Insectsformreports.php#Potato. Results of the Idaho trapping network are scheduled to be posted at that website in the near future. Information on tuber moth trap counts for the Columbia Basin of Washington and Oregon can be found at www.potatoes.com/mapthing/plotmap1.cfm. This information was provided by Dr. Mike Thornton from the University of Idaho.
Pesticide Disposal in Canyon County
Announcements Treasure Valley - Idaho
Posted on: September 16, 2005 by Jerry Neufeld
NEWS RELEASE
ISDA ANNOUNCES FREE PESTICIDE DISPOSAL PICKUP AT CANYON COUNTY LANDFILL
(BOISE) Agricultural producers, dealers, applicators and homeowners who are storing unusable pesticides will have a safe, legal and free opportunity to dispose of them on September 23, 2005 when the Idaho State Department of Agriculture conducts an unusable pesticide collection. The event is being held in conjunction with Canyon County’s 3rd annual Household Hazardous Waste collection at the Pickles Butte Landfill, 15500 Missouri Ave., Nampa, in rural Canyon County.
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 collection site on September 23.
Additionally, on September 24, Canyon County residents will be able to dispose of household quantities of hazardous wastes including fertilizer, micronutrients, paint, solvents, or equipment motor oil.
Both collections will take place between 9 a.m. and 2 p.m.
“This is a great opportunity for disposing of potentially harmful chemicals in an environmentally sound manner,” said Victor Mason II, manager of the department’s pesticide disposal and container recycling programs. “These chemicals will be collected, rather than dumped down a storm drain or tossed in the landfill.”
Since 1993, the Idaho State Department of Agriculture has disposed of more than 600,000 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 and other information about the collection is available at: http://www.agri.state.id.us/Categories/Pesticides/pdp/indexdisposalmain.php
CONTACT: Wayne Hoffman(208) 332-8671
Pesticide disposal for eastern and south central Idaho
All Crops All Locations
Posted on: September 7, 2005 by Jeff Miller
The ISDA has announced a free pickup for unusable pesticides in eastern and south-central Idaho. More information can be found at the following link:
http://www.agri.state.id.us/Categories/Pesticides/pdp/indexdisposalmain.php
Dates and places for pickup are:
Sept. 12 in Rexburg (Madison County Solid Waste Transfer Site)
Sept. 13 in Preston (Franklin County Weed Control)
Sept. 14 in American Falls (Power County Landfill)
Sept. 15 in Burley (BLM Yard)
Sept. 16 in Twin Falls (Twin Falls Canal Company)
Sept. 17 in Jerome (Jerome County Fair Grounds)
Each location will be receiving pesticides from 9:00 a.m. to 1:00 p.m.
Late blight in western Bingham County
Potato All Locations
Posted on: September 3, 2005 by Jeff Miller
Late blight has been confirmed in western Bingham County (north of Aberdeen). The field had received four applications of fungicides on 14-day intervals. Similar to the late blight north of American Falls, the outbreak in this field is small.
Late blight in Power County
Potato All Locations
Posted on: September 2, 2005 by Jeff Miller
Late blight has been confirmed in Power County north of American Falls. The potato field is still green. Two fungicide applications had been made to the field prior to finding the late blight. The blight was only found on stems and petioles and appeared to have come in from outside the field. The blight was very limited in the field. The lesions at first appeared to be wind and/or frost damage.
For the Pleasant Valley area, growers with healthy, actively growing vines are advised to apply a protectant fungicide. Spread of the pathogen is unlikely in the absence of thundershowers. However, dew formation will favor spread within a field.
If you have any further questions, please contact Jeff Miller at the University of Idaho at 681-1379.
Pomology Program Annual Fruit Field Day
Tree Fruits Treasure Valley - Idaho
Posted on: August 29, 2005 by Jerry Neufeld
The University of Idaho Annual Fruit Field Day will be held on Wednesday, September 7, 2005 from 8:30 am to 1:00 pm. The registration will start at 8:30 am and program will start at 9:00 am. Several cultivars of new table grapes, peaches, nectarines, apples, quinces, Asian pears, and other alternative fruits will be presented during the tour. Participants can taste many of these fruits. Four Credits will be given toward the Idaho Pesticide Applicator License.
Highlights of this event will be:
1)Presentation and tasting of several types and cultivars of fruits at the main office complex and discussion on application of growth bio-regulators in fruit crops
2)Tour of the U of I comprehensive research projects on ‘Fuji’ and ‘Gala’ apple irrigation and rootstock selections, chemical thinning, and pesticides uses
3)Tour of the alternative fruit crops, including quinces, Asian pears, persimmons, Jujube, and mulberries
4)Tour of the table grape vineyards, peaches and nectarines, and discussion/ questions/answers on various cultural practices of fruit crops, including planting, growth regulators, pruning, thinning, girdling, pest control, irrigation
Where: University of Idaho, Parma Research & Extension Center in Parma, on the lawn in front of the main office complex. Going west on Highway 20/26 in Parma, turn right at M&W grocery store, go for about 1/3 miles and turn left on U of I Lane and go north for about 1 mile.
When: Wednesday, September 7, 2005, Starts at 8:30 am (sharp) till 1:00 pm
Cost: Free of Charge
Who Can Participate? Open to the Public. Those interested in fruit production, including commercial growers, small farm growers, alternative fruit growers, home gardeners, Master gardeners, horticultural professionals and graduate students, extension and research faculty/staff, horticultural hobbyist, and fruit industry representatives are welcome. For additional information, please call: 208-722-6701 Extension 228 OR contact Dr. Esmaeil “Essie” Fallahi at 208-722-6701 Ext. 225
Late blight in the Magic Valley
Potato All Locations
Posted on: August 26, 2005 by Jeff Miller
Late blight has been confirmed in Minidoka County. Protectant fungicide applications in this area are advised to protect against the threat of tuber blight for fields that still have healthy canopies. Ranger Russet is particularly susceptible to tuber blight.
Continued scouting of potato fields is still critical. Any suspicious lesions can be submitted to the University of Idaho for confirmation. Please contact any of the people listed below:
Mike Thornton (Treasure Valley): 722-6701
Nora Olsen (Magic Valley): 736-3600
Jeff Miller (Aberdeen): 397-4181
Bill Bohl (Blackfoot): 785-8060
Phil Nolte (Idaho Falls): 529-8376
All field specific information will be held strictly confidential and reported only on a county basis.
Green peach aphids
Potato Eastern Idaho
Posted on: August 22, 2005 by William H. Bohl
Green peach aphids have been found in Power and southern Bingham Counties. Growers who are planning on storing potatoes long-term should continue to scout for and control green peach aphids until vines are killed. Be sure to follow label directions for intervals between a pesticide application and harvest.
Late Blight in Potatoes
Potato Treasure Valley - Idaho
Posted on: August 17, 2005 by Jerry Neufeld
Late Blight has been found in several more Canyon County potato fields. Mike Thornton, from the U of I’s Parma Research and Extension Center, says the recommended treatment for those potatoes going into storage is to continue your fungicide spray program until vines are killed.
corn earworm
Corn Treasure Valley - Idaho
Posted on: August 11, 2005 by Jerry Neufeld
The next generation of corn earworm moths will lay eggs in the silk of corn between 1450 and 1650 growing degree days (GDD). GDD accumulations for Caldwell, Nampa and Parma respectively are 1424, 1374 and 1462. If you have late silking corn you will want to continue scouting for earworm eggs.
Corn earworm
All Crops Treasure Valley - Idaho
Posted on: August 11, 2005 by Jerry Neufeld
The next generation of corn earworm moths will lay eggs in the silk of corn between 1450 and 1650 growing degree days (GDD). GDD accumulations for Caldwell, Nampa and Parma respectively are 1424, 1374 and 1462. If you have late silking corn you will want to continue scouting for earworm eggs.
Corn Earworm
Corn Treasure Valley - Idaho
Posted on: July 29, 2005 by Jerry Neufeld
According to the Oregon State University Growing Degree Day (GDD) model for Corn Earworm (http://pnwpest.org) we are currently at approximately 1110 GDD in the Treasure Valley. Summer moths will begin laying eggs in fresh corn silk at approximately 1300 GDD. The GDD model is predicting egg hatch will begin on August 4. Those fields silking at this time are most vulnerable to attack. University of Idaho CIS 366 entitled “Timing Corn Earworm Control” states that “no chemical control will control worms in the ears, so sprays must be timed to control the larvae on the silk before the worms enter the ears. Make the first application when the plants are 50 percent silk, and repeat in 5 to 7 days or as necessary.”
Iris Yellow Spot Virus
Onion Treasure Valley - Oregon
Posted on: July 27, 2005 by Jerry Neufeld
Lynn Jensen from the Oregon State University, Malheur County Cooperative Extension Office is reporting that Iris Yellow Spot Virus has been identified in onion fields in the Treasure Valley area including fields in Weiser, Fruitland, Ontario and Nyssa. There are currently no known fungicide treatment options for this virus. The virus is transmitted by onion thrips. Growers should keep their fields as stress free as possible by keeping thrips populations in check and by maintaining good irrigation practices.
Organic Potato Field Day August 8
Announcements All Locations
Posted on: July 25, 2005 by Nora Olsen
******* FIELD DAY ANNOUNCEMENT ********
Organic Potato Field Day
Monday, August 8, 2005
Sunset Butte Organics near Buhl, Idaho
10 am - 3 pm
******** FIELD DAY ANNOUNCEMENT ********
Potato Growers of Idaho, the Northwest Coalition for Alternatives to Pesticides and Rural Roots invite you to attend a tour of Sunset Butte Organics' potato farm on August 8 near Buhl, Idaho. Mike Heath of Sunset
Butte Organics, along with other organic potato growers, will discuss rotation crops, fertility and pest management and marketing. John O'Connor, an organic grower and former organic inspector, will speak about the organic certification process and on-farm inspection. Mir Seyedbagheri, Juan Alvarez and Nora Olsen from the University of Idaho will share their work on organic potato fertility, beneficial insects and organic sprout inhibitors. Enjoy a delicious meal of organic beef and freshly picked fruits and vegetables.
Please RSVP by August 3, 2005 with Keith Esplin at 785-1110 or pgike@cableone.net or Jen Miller at 850-6504 or millerjen12@aol.com. Support for this field day also comes from the following businesses: Frontier Natural Products Co-op, Magic Valley Compost, Mountain States Oilseeds and Pillar Butte Seed.
DIRECTIONS TO THE FIELD DAY: From Boise - Exit I-84 at Bliss. Travel south on Hwy 30 through Hagerman. After leaving the canyon, head south to the first 90°
curve and go straight (leave Hwy 30) onto 1000 E Rd. The road will wind around. At first T intersection, turn left onto 4200 North Rd. After 200 yards, take a right onto 1000 East Rd and travel 1 mile. At next T
intersection, turn left onto 4100 North Rd. After 200 yards, take a right onto 1000 East Rd and travel 3 miles. Turn right onto 3800 North Rd and travel 1 mile. Meet at house with shady front yard and Sunset Butte Organics sign (3800 N 912 E). From Twin Falls - Take Hwy 30 (truck route) towards Buhl. Travel west through Buhl on Burley Ave, which becomes Deep Creek Rd and then 4100 North Rd) for 4 miles. Turn left onto 1000 East Rd and travel 3 miles. Turn right onto 3800 North Rd and travel 1 mile. Meet at house with shady front yard and Sunset Butte Organics sign (3800 N 912 E).
Late blight found in southern Idaho
Potato All Locations
Posted on: July 19, 2005 by Jeff Miller
Late blight was confirmed in Canyon County this morning (July 19, 2005). The blight appeared to have started in a spot that looked like a drowned-out spot. Further investigation showed that lesions were scattered throughout the field. A second field nearby was found to have a very light infestation.
The typical light-green halo that usually surrounds late blight lesions was not present on the infected leaves early in the morning when the leaves were wet. As the leaves dried out, the characteristic halo did appear. However, white sporulation was visible on leaves in the early morning dew.
Growers in the Treasure Valley who do not have late blight should spray immediately if no applications have been made and continue on a weekly basis with a protectant fungicide. As long as the weather remains hot and dry, spread of the pathogen will be slow. If late blight has been confirmed in a field, stronger products such as Curzate®, Acrobat®, and Previcur® can be mixed with the protectants (TanosTM is a combination of the active ingredient in Curzate® and famoxate, which is similar in activity to strobilurins). Stand alone products like Omega® and Gavel® have also shown good protection against tuber blight. If you have any question about fungicide usage please contact the University of Idaho personnel listed at the end of this email.
As long as the weather remains hot and dry, growers in other regions of the state can stay on a 10-14 day program. However, fields need to be scouted intensively. The weather in Canyon County has been hot and dry. The late blight has most likely been present for a while, but was limited in expression due to the hot dry weather. Spring conditions were extremely favorable for the late blight pathogen to get established. The threat of late blight is high for all areas of the state and most likely will appear in other areas soon. Scout wet areas in fields 2-3 times each week.
If you find any suspicious symptoms, please contact University of Idaho personnel:
Mike Thornton (Treasure Valley): 722-6701
Nora Olsen (Magic Valley): 736-3600
Phil Nolte (Idaho Falls): 529-8376
Bill Bohl (Blackfoot): 785-8060
Jeff Miller (Aberdeen): 397-4181
All field specific information will be held strictly confidential.
Withdrawal of the SLN registration for Eminent on Sugar Beet
All Crops Magic Valley
Posted on: July 19, 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.
Today the US EPA has ordered the Idaho Department of Agriculture to withdraw the Special Local Needs registration 24(c) for Eminent fungicide for use on sugarbeets for powdery mildew and Cercospora leafspot control that was issued on June 3, 2005. We will not be able to use the material this year.
Eminent is in a different class of fungicides than either our currently registered strobilurins or the benzimidazole. We attempted the registration because it was an important tool for fungicide resistance management.
corn earworm
Corn Treasure Valley - Idaho
Posted on: July 19, 2005 by Jerry Neufeld
According to the Oregon State University Growing Degree Day (GDD) model for Corn Earworm (http://pnwpest.org) we are currently at 941 GDD in Caldwell and 954 GDD in the Parma area. We are currently accumulating about 22 GDD each day. First generation summer 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 ears. Those fields silking after 1300 are most vulnerable to attack.
The GDD model is predicting we will reach 1300 GDD on July 31 or August 1 and that earworm eggs will begin hatching about August 4 or 5 in both the Parma and Caldwell areas respectively. As we approach the start of egg hatch you will want to step up your field scouting and take the appropriate control measures to treat the larvae before they enter the corn ears.
Powdery Mildew in Sugarbeets
Sugarbeets Treasure Valley - Idaho
Posted on: July 13, 2005 by Steven Reddy
Powdery Mildew has been identified by Amalgamated Sugar Company Field Staff in the Middleton and Notus areas of the Treasure Valley.
In addition, Black Bean Aphid has been identified in the same fields. In many cases, an insecticide can be tank mixed with your Powdery Mildew treatment. Consult with your field representative for recommendations.
Malheur Experiment Station Field Day Wednesday, July 13th
Announcements All Locations
Posted on: July 12, 2005 by Clint Shock
The Malheur Experiment Station Field Day will be held this Wednesday, July 13th.
The schedule for this year is as follows:
8:30 (am) - 9:00
9:00 - 10:30
10:30 - 12:00
12:00 - 1:00
1:30 - 4:00
We'll also be showing off the new Mid-Snake River Watershed Vegetation Database after lunch.
Late blight
Potato All Locations
Posted on: July 12, 2005 by Jeff Miller
Late blight has been found in northern Idaho. Based on the pattern of disease in the field, it originated from seed.
This outbreak does not pose a threat to potato producers in southern Idaho. However, it does underscore the potential for blight development given the weather we have experienced this year. Conditions prior to the last few weeks were ideal for the establishment of an epidemic.
Scout wet areas twice weekly. An initial fungicide application be made just prior to row closure. An interval of 14 days is justified under our current hot, weather. If thundershowers develop, however, intervals will need to be shortened.
Crop Production Challenge
Announcements All Locations
Posted on: June 30, 2005 by Nora Olsen
The University of Idaho and USDA/ARS invite you to join us for the First Annual Crop Production Challenge on July 7, 2005 at the University of Idaho Kimberly R & E Center (3806 N. 3600 E.).
Registration from 8 to 8:30 am. The challenge will run from 8:30 to 3 pm with lunch provided for those who RSVP by July 5.
This is an educational event to test and increase the knowledge of crop advisors, consultants, extension educators, and other agricultural professionals; and have fun at the same time.
Pesticide applicator recertification credits and Certified Crop Advisor credits available.
Topics to include: Entomology, Plant Pathology, Weed Science, Potato Physiology, Soil Fertility, Irrigation Management, and Water Quality.
Call 736-3600 (Mary) to register or if you have any questions.
Powdery Mildew
All Crops Treasure Valley - Idaho
Posted on: June 22, 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 A REFERENCE PAGE FOR POWDERY MILDEW IN SUGARBEETS. CONTACT YOUR FIELD REPRESENTATIVE FROM AMSCO FOR AMSCO'S TREATMENT RECOMMENDATIONS.
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 A REFERENDE PAGE FOR POWDERY MILDEW IN SUGARBEETS YOU SHOULD CONTACT YOUR FIELD REPRESENTATIVE FROM AMSCO FOR THEIR TREATMENT RECOMMENDATIONS.
