Richard Roseberg

Growing euphorbia as a drought-tolerant source of expoxidized fatty acids

Euphorbia is a drought-tolerant plant that produces a seed oil that has useful applications in industrial products. Research has shown the optimal conditions and best practices for growing euphorbia.

Richard Roseberg, Rachel A. Bentley | Mar 2025 | OSU Extension Catalog Peer reviewed (Orange level)

Teff: A New Warm-Season Annual Grass for Oregon

Describes characteristics and growing requirements of teff (Eragrostis tef [Zucc.], Poaceae) as a hay and forage crop in Oregon. Discusses hay quality and use; yields and varieties; and how to plant, fertilize, irrigate, cultivate, and harvest teff.

Steve Norberg, Richard Roseberg, Brian Charlton, Clinton Shock | Jun 2023 | OSU Extension Catalog Peer reviewed (Orange level)

Hemp sex-ed

Hemp cultivation in Oregon is expanding, but growers need to be aware of the problems associated with unwanted pollination. Find out why it's vital that farmers coordinate with neighbors.

Lloyd Nackley, Kristine Buckland, Richard Roseberg | Dec 2024 | OSU Extension Catalog Peer reviewed (Orange level)

Soft White Winter Wheat (Western Oregon) Nutrient Management Guide

Gives nutrient and lime recommendations for soft white winter wheat in western Oregon. Also discusses: impact of diseases, such as take-all root rot, on crop yield; planting in poorly drained soil; soils and ...

John M. Hart, Michael D. Flowers, Nicole Anderson, Richard Roseberg, Neil W. Christensen, Mark E. Mellbye | Jul 2023 | OSU Extension Catalog Peer reviewed (Orange level)

Teff grass for forage: Nitrogen and irrigation requirements

Teff is an ancient grain with high yields of high-quality hay. Research outlined here shows that teff requires less nitrogen and irrigation water than comparable forage crops. Learn how much to apply and when to apply it.

Richard Roseberg, Steven Norberg, Brian Charlton | Feb 2026 | OSU Extension Catalog Peer reviewed (Orange level)