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

Authors:

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

Authors:

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


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 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


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

Authors:

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


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