2020 Seed Production Research Report

Contents

• An Industry Survey of Current Practices, Problems, and Research Priorities in Western Oregon Grass and Clover Seed Cropping Systems
• Annual Carbon Balance of a Second-year Tall Fescue Seed Crop
• Effects of Straw Removal, Clay Content, and Stand Age on Soil Health in Tall Fescue Seed Production: Final Report
• Genetic Variation for Seed Retention in Accessions and Genotypic Lines of Perennial Ryegrass
• Spring Mowing and Plant Growth Regulator Effects on First- and Second-year Fine Fescue Seed Crops
• Effects of Trinexapac-ethyl on Kentucky Bluegrass in the Grande Ronde Valley of Northeastern Oregon (Year 3)
• Mobility of the Gray Field Slug
• Understanding Billbug Species Complex in Grass Seed Production Systems in Western Oregon
• Cutworm and Armyworm Population Dynamics and Investigation of Parasitism in Kentucky Bluegrass Production
• Choke Expression in Epichloë typhina Seedling-infected Orchardgrass (Dactylis glomerata) Germplasm
• Ergot Response of Early-, Middle-, and Late-flowering Kentucky Bluegrass Cultivars in Central and Eastern Oregon
• Evaluation of Fungicides for Control of Powdery Mildew on Kentucky Bluegrass in Central Oregon (2020)
• Biochar: An Alternative to Activated Carbon in Carbon Seeding for the Establishment of Perennial Ryegrass
• Auxin Herbicide Suppression of Italian Ryegrass Seed Viability in Tall Fescue Seed Production
• Summer Annual Grass Weed Control During Establishment of Kentucky Bluegrass Grown for Seed
• Sulfosulfuron for Control of Roughstalk Bluegrass During Kentucky Bluegrass Stand Establishment
• Evaluation of Experimental Herbicides in Seedling Red and White Clover Grown for Seed
• Seed Yield Performance and Flowering Initiation of Twelve Red Clover Varieties (Year 2)
• Preemptive Measures to Manage the Red Clover Casebearer Moth in Oregon Clover Seed Crops
• Laboratory Bioassays for Screening Bifenthrin Resistance in White Clover Seed Weevil (Year 2)

Author Index

Central Oregon Agricultural Research Center—OSU

Q. Cheng, Research Associate, Plant Pathology

• Ergot Response of Early-, Middle-, and Late-flowering Kentucky Bluegrass Cultivars in Central and Eastern Oregon

H. Downing, Farm and Facilities Manager

• Evaluation of Fungicides for Control of Powdery Mildew on Kentucky Bluegrass in Central Oregon (2020)

J.K.S. Dung, Associate Professor, Plant Pathology

• Ergot Response of Early-, Middle-, and Late-flowering Kentucky Bluegrass Cultivars in Central and Eastern Oregon
• Evaluation of Fungicides for Control of Powdery Mildew on Kentucky Bluegrass in Central Oregon (2020)

J.F. Spring, Assistant Professor, Integrated Pest Management

• Sulfosulfuron for Control of Roughstalk Bluegrass During Kentucky Bluegrass Stand Establishment

Hermiston Experiment Station—OSU

K.E. Frost, Assistant Professor, Botany and Plant Pathology

• Ergot Response of Early-, Middle-, and Late-flowering Kentucky Bluegrass Cultivars in Central and Eastern Oregon

Department of Crop and Soil Science—OSU

L.K. Bobadilla, Graduate Student, Weed Science

• Auxin Herbicide Suppression of Italian Ryegrass Seed Viability in Tall Fescue Seed Production

C.A.C.G. Brunharo, Assistant Professor, Weed Science

• Auxin Herbicide Suppression of Italian Ryegrass Seed Viability in Tall Fescue Seed Production
• Evaluation of Experimental Herbicides in Seedling Red and White Clover Grown for Seed

T.G. Chastain, Professor, Seed Crop Physiology

• Genetic Variation for Seed Retention in Accessions and Genotypic Lines of Perennial Ryegrass
• Spring Mowing and Plant Growth Regulator Effects on First- and Second-year Fine Fescue Seed Crops

A.J. Colton, Faculty Research Assistant, Invertebrate Pests

• Mobility of the Gray Field Slug

D.W. Curtis, Senior Faculty Research Assistant, Weed Science

• Auxin Herbicide Suppression of Italian Ryegrass Seed Viability in Tall Fescue Seed Production

B.C. Donovan, Faculty Research Assistant, Seed Crop Extension

• Spring Mowing and Plant Growth Regulator Effects on First- and Second-year Fine Fescue Seed Crops
• Mobility of the Gray Field Slug
• Understanding Billbug Species Complex in Grass Seed Production Systems in Western Oregon
• Seed Yield Performance and Flowering Initiation of Twelve Red Clover Varieties (Year 2)

S. Elias, Professor, Seed Science and Technology

• Effects of Trinexapac-ethyl on Kentucky Bluegrass in the Grande Ronde Valley of Northeastern Oregon (Year 3)

C.J. Garbacik, Senior Faculty Research Assistant, Seed Crop Physiology

• Spring Mowing and Plant Growth Regulator Effects on First- and Second-year Fine Fescue Seed Crops

A.G. Hulting, Professor, Extension Weed Specialist

• Auxin Herbicide Suppression of Italian Ryegrass Seed Viability in Tall Fescue Seed Production
• Evaluation of Experimental Herbicides in Seedling Red and White Clover Grown for Seed

N. Kaur, Assistant Professor, Extension Entomology Specialist

• Understanding Billbug Species Complex in Grass Seed Production Systems in Western Oregon
• Cutworm and Armyworm Population Dynamics and Investigation of Parasitism in Kentucky Bluegrass Production
• Preemptive Measures to Manage the Red Clover Casebearer Moth in Oregon Clover Seed Crops
• Laboratory Bioassays for Screening Bifenthrin Resistance in White Clover Seed Weevil (Year 2)

C.A. Mallory-Smith, Professor Emeritus, Weed Science

• Auxin Herbicide Suppression of Italian Ryegrass Seed Viability in Tall Fescue Seed Production
• Evaluation of Experimental Herbicides in Seedling Red and White Clover Grown for Seed

R.J. Mc Donnell, Associate Professor, Slug Specialist

• Mobility of the Gray Field Slug

K.M. Meyer, Faculty Research Assistant

• Biochar: An Alternative to Activated Carbon in Carbon Seeding for the Establishment of Perennial Ryegrass

A.D. Moore, Associate Professor, Extension Soil Fertility Specialist

• Effects of Straw Removal, Clay Content, and Stand Age on Soil Health in Tall Fescue Seed Production: Final Report

B. Panthi, Postdoctoral Scholar, Entomology

• Preemptive Measures to Manage the Red Clover Casebearer Moth in Oregon Clover Seed Crops
• Laboratory Bioassays for Screening Bifenthrin Resistance in White Clover Seed Weevil (Year 2)

K.C. Roerig, Senior Faculty Research Assistant, Weed Science

• Evaluation of Experimental Herbicides in Seedling Red and White Clover Grown for Seed

D.M. Sullivan, Professor, Soil Fertility

• Effects of Straw Removal, Clay Content, and Stand Age on Soil Health in Tall Fescue Seed Production: Final Report

T.B. Tubbs, Graduate Student, Seed Crop Physiology

• Genetic Variation for Seed Retention in Accessions and Genotypic Lines of Perennial Ryegrass

L. Van Slambrook, Faculty Research Assistant, Extension Entomology

• Understanding Billbug Species Complex in Grass Seed Production Systems in Western Oregon
• Cutworm and Armyworm Population Dynamics and Investigation of Parasitism in Kentucky Bluegrass Production
• Preemptive Measures to Manage the Red Clover Casebearer Moth in Oregon Clover Seed Crops
• Laboratory Bioassays for Screening Bifenthrin Resistance in White Clover Seed Weevil (Year 2)

R.L. Wilson, Faculty Research Assistant, Seed Crop Physiology

• Seed Yield Performance and Flowering Initiation of Twelve Red Clover Varieties (Year 2)

Department of Environmental and Molecular Toxicology—OSU

M. Garcia-Jaramillo, Assistant Professor

• Biochar: An Alternative to Activated Carbon in Carbon Seeding for the Establishment of Perennial Ryegrass

Department of Fisheries and Wildlife—OSU

W. Creason, Academic Advisor

• Annual Carbon Balance of a Second-year Tall Fescue Seed Crop

A. Schmidt, Research Associate

• Annual Carbon Balance of a Second-year Tall Fescue Seed Crop

Department of Forest Ecosystems and Society–OSU

C.V. Hanson, Senior Faculty Research Assistant II

• Annual Carbon Balance of a Second-year Tall Fescue Seed Crop

H. Kwon, Research Associate

• Annual Carbon Balance of a Second-year Tall Fescue Seed Crop

Department of Horticulture—OSU

J. Green, Faculty Research Assistant, Entomology

• Cutworm and Armyworm Population Dynamics and Investigation of Parasitism in Kentucky Bluegrass Production

Extension Service—OSU

N.P. Anderson, Area Extension Agronomist, North Willamette Valley

• An Industry Survey of Current Practices, Problems, and Research Priorities in Western Oregon Grass and Clover Seed Cropping Systems
• Spring Mowing and Plant Growth Regulator Effects on First- and Second-year Fine Fescue Seed Crops
• Effects of Trinexapac-ethyl on Kentucky Bluegrass in the Grande Ronde Valley of Northeastern Oregon (Year 3)
• Mobility of the Gray Field Slug
• Understanding Billbug Species Complex in Grass Seed Production Systems in Western Oregon
• Seed Yield Performance and Flowering Initiation of Twelve Red Clover Varieties (Year 2)
• Preemptive Measures to Manage the Red Clover Casebearer Moth in Oregon Clover Seed Crops
• Laboratory Bioassays for Screening Bifenthrin Resistance in White Clover Seed Weevil (Year 2)

K.C. Tanner, Field Crops Extension Agent, Linn County

• Preemptive Measures to Manage the Red Clover Casebearer Moth in Oregon Clover Seed Crops

E.C. Verhoeven, Field Crops Extension Agent, Marion County

• An Industry Survey of Current Practices, Problems, and Research Priorities in Western Oregon Grass and Clover Seed Cropping Systems
• Effects of Straw Removal, Clay Content, and Stand Age on Soil Health in Tall Fescue Seed Production: Final Report

D.L. Walenta, Area Extension Agronomist, Union County

• Effects of Trinexapac-ethyl on Kentucky Bluegrass in the Grande Ronde Valley of Northeastern Oregon (Year 3)
• Understanding Billbug Species Complex in Grass Seed Production Systems in Western Oregon
• Cutworm and Armyworm Population Dynamics and Investigation of Parasitism in Kentucky Bluegrass Production
• Summer Annual Grass Weed Control During Establishment of Kentucky Bluegrass Grown for Seed
• Preemptive Measures to Manage the Red Clover Casebearer Moth in Oregon Clover Seed Crops

Forage and Range Research Unit, Logan, UT—USDA-ARS

B.S. Bushman, Plant Geneticist

• Choke Expression in Epichloë typhina Seedling-infected Orchardgrass (Dactylis glomerata) Germplasm

National Forage Seed Production Research Center, Corvallis, OR—USDA-ARS

J.E. Dombrowski, Plant Geneticist

• Choke Expression in Epichloë typhina Seedling-infected Orchardgrass (Dactylis glomerata) Germplasm

S.J. Dorman, Entomologist

• Laboratory Bioassays for Screening Bifenthrin Resistance in White Clover Seed Weevil (Year 2)

M. Gonzalez-Mateau, Postdoctoral Scholar, Soil Science

• Effects of Straw Removal, Clay Content, and Stand Age on Soil Health in Tall Fescue Seed Production: Final Report

R.C Martin, Plant Molecular Biologist

• Choke Expression in Epichloë typhina Seedling-infected Orchardgrass (Dactylis glomerata) Germplasm

L. Merlet, Faculty Research Assistant

• Choke Expression in Epichloë typhina Seedling-infected Orchardgrass (Dactylis glomerata) Germplasm

K.M. Trippe, Research Microbiologist

• Annual Carbon Balance of a Second-year Tall Fescue Seed Crop
• Biochar: An Alternative to Activated Carbon in Carbon Seeding for the Establishment of Perennial Ryegrass

National Laboratory for Agriculture and Environment, Ames, IA—USDA-ARS

C.L. Phillips, Research Soil Scientist

• Annual Carbon Balance of a Second-year Tall Fescue Seed Crop

The Coastal Plain Soil, Water and Plant Conservation Research, Florence, SC—USDA-ARS

D. Watts, Soil Scientist

• Biochar: An Alternative to Activated Carbon in Carbon Seeding for the Establishment of Perennial Ryegrass

J.M. Novak, Research Soil Scientist

• Biochar: An Alternative to Activated Carbon in Carbon Seeding for the Establishment of Perennial Ryegrass

Temperate Tree Fruit and Vegetable Research Unit, Wapato, WA—USDA-ARS

W.R. Cooper, Research Leader

• Preemptive Measures to Manage the Red Clover Casebearer Moth in Oregon Clover Seed Crops

Blue Mountain Seeds, Inc., Imbler Oregon

B. Merrigan, General Manager

• Summer Annual Grass Weed Control During Establishment of Kentucky Bluegrass Grown for Seed

Central Oregon Seeds, Inc., Madras, OR

R.P. Affeldt, Central Oregon Seeds, Inc.

• Sulfosulfuron for Control of Roughstalk Bluegrass During Kentucky Bluegrass Stand Establishment

Atmospheric and Oceanic Sciences—University of Wisconsin

B.A. Murphy, Ph.D. Student

• Annual Carbon Balance of a Second-year Tall Fescue Seed Crop

Agriculture and Agri-Food Canada, Beaverlodge, Alberta

J. Otani, Pest Management Biologist

• Preemptive Measures to Manage the Red Clover Casebearer Moth in Oregon Clover Seed Crops

Department of Agricultural, Food and Nutritional Science, University of Alberta, Canada

B.A. Mori, Assistant Professor, Entomologist

• Preemptive Measures to Manage the Red Clover Casebearer Moth in Oregon Clover Seed Crops

Credits
 

This report has been published with a grant from the Oregon Seed Council

Appreciation is expressed to the Officers of the 2020-2021 Oregon Seed Council:
Charles Ortiz, President

K.C. Coon, Vice President
Orin Nusbaum, Second Vice President
Don Doerfler, Treasurer
Kent Burkholder, Immediate Past President

Business Address:
Oregon Seed Council
494 State Street, Suite 220
Salem, OR 97301
Tel: (503) 585-1157
FAX: (503) 585-1292
E-mail: roger@rwbeyer.com
www.oregonseedcouncil.org

Sincere appreciation is also extended to the growers who have allowed trials to be conducted on their farms. Data presented in many of the research reports would not be available without their cooperation.

Lastly, appreciation is expressed to Teresa Welch, Wild Iris Communications, for her conscientious attention to detail in formatting this manuscript for publication.