The Central Oregon Farm Fair & Trade Show. The fair, held at the Jefferson County Fairgrounds Wednesday and Thursday, is an annual gathering of farmers, ranchers, equipment dealers, agronomists and others in this area’s... more
Annual Reports
Altitude adds energy value to alfalfa hay
The list of components in a dairy cow’s ration includes forages, nonfiber carbohydrate feeds (grains and by-products), rumen degradable and by-pass proteins, fat, minerals, vitamins, and other feed additives.
Evaluation of Ergot Resistance and Disease Escape in Kentucky Bluegrass Cultivars
Series/Report Number: COARC2016
Abstract: Ergot is an important disease of Kentucky bluegrass seed production in Oregon. The disease is caused by the fungal pathogen Claviceps purpurea,... more
Pilot Balloon Observations, 2016, Jefferson County Smoke Management
Series/Report Number: COARC2016
Abstract: Pilot Balloon (PIBAL) observations are a major component of the daily decision-making process used in managing open field burning of grass seed and... more
Electronic Mint Pest Alert Newsletter Regarding Control of Mint Root Borer, Cutworm Complex and Loopers (Year 3)
Series/Report Number: COARC2016
Chapter Number: 44
Abstract: An electronic newsletter was developed for the peppermint production regions in Oregon to assist growers... more
Prevalence of Race 2 Strains of Verticillium dahliae Causing Verticillium Wilt of Mint in Oregon
Series/Report Number: COARC2016
Abstract: Verticillium dahliae is a plant pathogenic fungus that causes Verticillium wilt, which is the most detrimental disease of commercially grown... more
Management of Verticillium Wilt Using Green Manure Biofumigants
Series/Report Number: COARC2016
Abstract: Verticillium wilt caused by the fungus Verticillium dahliae is the most important disease of commercial mint production. Rotation to non-hosts is... more
Evaluation of Potential New Insecticide in Carrots for Lygus Control
Series/Report Number: COARC2016
Abstract: Lygus bugs feeding on carrots grown for seed during flowering and seed maturation reduce seed viability. Potential new insecticides for control of... more
Evaluation of Potential New Insecticides and Fungicides for Honey Bee Repellency in Seed Carrots
Series/Report Number: COARC2016
Abstract: To insure honey bee safety during crop pollination, potential new products were screened for bee repellency. This research was conducted in a carrot... more
Evaluation of Potential New Herbicides in Carrots Applied as a Directed Spray at Layby
Series/Report Number: COARC2016
Abstract: Weed resistance to ongoing use of Lorox in carrots grown for seed is a concern to industry representatives and growers. This project was established... more
Foliar Boron Fertilizer Application and Timing in Hybrid Carrot Seed Production
Hybrid European Nantes carrot seed production can be challenging for growers as yields can be unreliable. Demand for boron (B) in many crops is greatly elevated during flowering and seed set even when B in the plant leaves are in the... more
Characterizing the Incidence and Distribution of Bacterial Blight Infestation in Individual Carrot Seeds: Can One Bad Seed Spoil the Whole Seed Lot?
Series/Report Number: COARC2016
Abstract: Bulk samples of carrot seed are tested for Xanthomonas hortorum pv. carotae (Xhc) using a seed wash dilution-plating protocol (Asma, 2005). In this... more
Evaluation of Disinfectant Seed Treatments to Reduce Xanthomonas hortorum pv. carotae in Carrot Seed Lots
Bacterial blight of carrot, caused by the plant pathogenic bacterium Xanthomonas hortorum pv. carotae (Xhc), is a common disease of carrot wherever the crop is grown. The disease can affect carrot foliage, stems, umbels, and roots and... more
Evaluation of ManKocide Alternatives for Bacterial Blight Control in Steckling-to-Seed Carrot Seed Crops
Series/Report Number: COARC2016
Abstract: Management of bacterial blight in carrot seed crops can be difficult and begins with the planting of healthy or treated seed. However, planting... more
Evaluation of Herbicides for Control of Rough Bluegrass, Cheatgrass, Rattail Fescue and Medusahead in Establishment Year and Second Year Kentucky Bluegrass Grown for Seed
Series/Report Number: COARC2016
Abstract: Adequate weed control during the establishment year of Kentucky bluegrass seed production is a challenge, particularly for grassy weeds in a grass... more
2015 COARC Annual Report
The Central Oregon Agricultural Research Center (COARC) faculty and staff are pleased to present this summary of 2015 research activities for your review. The reports included in this publication focus on grass seed, vegetable seed,... more
COARC Research Garden & Learning Center and Agricultural Education Outreach, 2015
Series/Report Number: COARC2015
Abstract: The Central Oregon Agricultural Research and Learning Center is an ongoing project in its 9th year of activity. The garden provides a hands-on... more
Pilot Balloon Observations, 2015 Jefferson County Smoke Management
Series/Report Number: COARC2015
Abstract: Pilot Balloon (PIBAL) observations are a major component of the daily decision-making process used in managing open field burning of grass seed and... more
Evaluation of New Fungicide Seed Treatment Pre-Mixes for Penicillium Dry Rot Control in Soft White Winter Wheat
Series/Report Number: COARC2015
Abstract: Penicillium dry rot of wheat (also known as Penicillium dry seed decay) occurs when wheat seed is planted into soils that are too dry to allow for... more
Summary Report of Conventional and Roundup Ready Alfalfa Variety Yield and Quality over Four Production Years in Central Oregon, 2011-2015
Series/Report Number: COARC2015
Abstract: An alfalfa variety trial was established in August, 2011 at the Central Oregon Agricultural Research Center in Madras, Oregon. The trial includes... more
Evaluation of N Fertilizer Rate and Timing on Wheat Yield
Series/Report Number: COARC2015
Abstract: This project sought to evaluate the effects of N rate and timing on yield and grain protein content in irrigated winter wheat grown in central... more
Managing Straw Residue Without Burning
Series/Report Number: COARC2015
Abstract: Managing straw residue with fire is an effective tool for growers. However, as tourism thrives and drought becomes more prevalent, increased... more
Central Oregon Potato Extension Program, 2015
Series/Report Number: COARC2015
Abstract: Aphids, tuberworm moths, potato psyllids, and beet leafhoppers were collected and counted weekly in Jefferson County from June 23 to September 9,... more
Discrimination of Mint Strains of Verticillium dahliae Using High Resolution Melting Analysis
Series/Report Number: COARC2015
Electronic Mint Pest Alert Newsletter to Promote Optimal Application of Coragen® to Control Mint Root Borer, Cutworms, Armyworms and Loopers, 2015
Series/Report Number: COARC2015
Abstract: An electronic newsletter was developed for the peppermint production regions in Oregon to assist growers and fieldmen consider control of mint root... more
Evaluate Potential Crop Injury from Herbicides Applied the Final Year of Peppermint Production when Rotating to Kentucky Bluegrass Seed or Wheat
Series/Report Number: COARC2015
Abstract: There have been ongoing concerns by growers and fieldmen in about herbicides used in peppermint production carrying over when rotating into Kentucky... more
Evaluation of Copper and Quaternary Ammonium to Control Bacterial Blight in Steckling-Planted Carrot Seed Crops
Series/Report Number: COARC2015
Evaluation of Late-Season ManKocide Applications to Reduce Xanthomonas hortorum pv. carotae on Harvested Carrot Seed
Series/Report Number: COARC2015
Abstract: Field plots were established to evaluate the efficacy of late-season applications of ManKocide for the suppression of Xanthomonas hortorum pv.... more
Incidence, Resistance, and Evaluation of Chemical Controls for Bacterial Soft Rot in Carrot Stecklings
Series/Report Number: COARC2015
Abstract: Bacterial soft rot, caused by Pectobacterium spp. (formerly Erwinia carotovora), can be an important disease of certain carrot steckling lines used... more
Layby Herbicide Treatments to Control Weeds During Row Closure in Sugar Beets Grown for Seed
Series/Report Number: COARC2015
Abstract: Sugar beets grown for seed in central Oregon is a small, established industry. Weed control in sugar beets is dependent on precise application... more
Evaluation of Predator Mites for Control of Two-Spotted Spider Mites in Carrots Grown for Hybrid Seed in Central Oregon, 2015
Series/Report Number: COARC2015
Abstract: Two-spotted spider mites (TSSM) are an important pest on hybrid carrot seed production in central Oregon. Predator mites have been used to... more
Environmental Factors Associated with Ergot Ascospore Production in Seed in Central Oregon and Evaluation of Ergot Resistance/Klendusity in Kentucky Bluegrass Cultivars
Series/Report Number: COARC2015
Chapter Number: 1
COARC Research Garden and Learning Center, 2014
Series/Report Number: COARC2014
Abstract: The Central Oregon Agricultural Research and Learning Center is an ongoing project in its 8th year of activity. The garden provides a hands-on... more
Pilot Balloon Observations, 2014 Jefferson County Smoke Management
Series/Report Number: COARC2014
Abstract: Pilot Balloon (Pibal) observations are a major component of the daily decision-making process used in managing open field burning of grass seed and... more
Evaluation of Conventional and Roundup Ready Alfalfa Varieties in Central Oregon, 2014
Series/Report Number: COARC2014
Abstract: An alfalfa variety trial was established in August, 2011 at the Central Oregon Agricultural Research Center, Madras, Oregon. 2014 was the third... more
Evaluation of Fungicides for the Control of Leaf Diseases in Alfalfa Seed
Series/Report Number: COARC2014
Abstract: A replicated field study was established to evaluate the efficacy of fungicides to control common leaf spot in alfalfa seed production fields. Plots... more
Central Oregon Potato Extension Program, 2014
Series/Report Number: COARC2014
Abstract: Insect pests were monitored in potato fields to assess potential risk of disease transmission. Aphid, tuberworm moths, and potato psyllids were... more
Electronic Mint Pest Alert Newsletter to Promote Optimal Application of Coragen® to Control Mint Root Borer, Cutworms, Armyworms and Loopers, 2014
Series/Report Number: COARC2014
Abstract: An electronic newsletter was developed for the peppermint production regions in Oregon to assist growers and fieldmen to consider control of mint... more
Evaluation of Biofumigation with Allyl Isothiocyanate to Reduce Verticillium Wilt in Mint
Series/Report Number: COARC2014
Abstract: Verticillium wilt, caused by the fungus Verticillium dahliae, is the most important disease of commercial mint production in the Pacific Northwest.... more
Evaluation of an Onion Soil Amendment to Reduce White Rot Sclerotia in Garlic
Series/Report Number: COARC2014
Abstract: White rot is one of the most important diseases of onion, garlic, and other Allium crops. The pathogen survives in the soil as sclerotia, which... more
Evaluation of Late-Season Bactericide Applications to Reduce Xanthomonas hortorum pv. carotae on Harvested Carrot Seed
Series/Report Number: COARC2014
Abstract: and Phyton 27 AG for the suppression of Xanthomonas hortorum pv. carotae (Xhc) on harvested carrot seed. Bactericide applications were made in late... more
Evaluation of Predator Mites for Control of Two-Spotted Spider Mites in Carrots Grown for Hybrid Seed in Central Oregon, 2014
Series/Report Number: COARC2014
Abstract: Two-spotted spider mites (TSSM) are an important pest on hybrid carrot seed production in central Oregon. Predator mites have been used to... more
Evaluation of Miticides for Two-Spotted Spider Mite Control in Carrots Grown for Hybrid Seed in Central Oregon, 2014
Series/Report Number: COARC2014
Abstract: Two-spotted spider mites (TSSM) are an important pest on hybrid carrot seed production in central Oregon. Concern about the two-week knock down... more
Incidence and Potential Impact of Bacterial Soft Rot in Steckling-Planted Carrot Seed Fields
Series/Report Number: COARC2014
Abstract: Bacterial soft rot can be an important disease of carrots, including carrot stecklings used for hybrid carrot seed production. The objectives of... more
Evaluation of Herbicides to Provide Control and Seed Head Suppression of Creeping Bentgrass
Series/Report Number: COARC2014
Abstract: Glyphosate tolerant creeping bentgrass (Agrostisstolonifera L.) accidentally escaped from production fields in 2003 and is now found growing along... more
Environmental Factors Influencing Airborne Ergot Ascospore Concentrations in Kentucky Bluegrass Grown for Seed in Central Oregon
Series/Report Number: COARC2014
Abstract: Ergot, caused by the fungus Claviceps purpurea, is an important disease affecting Kentucky bluegrass seed production in central Oregon. Multiple... more
2014 COARC Annual Report
The Central Oregon Agricultural Research Center (COARC) faculty and staff are pleased to present this summary of 2014 research activities for your review. The reports included in this publication focus on grass seed, vegetable seed,... more
Weed Control Programs in Mint Based on Spring Applied Herbicides to Minimize Rotational Restrictions, 2013
Series/Report Number: COARC2013
Volunteer Wheat Control in Newly Seeded Kentucky Bluegrass Grown for Seed
Series/Report Number: COARC2013