Aaron Heinrich

Soil Nitrate Testing for Willamette Valley Vegetable Production

A soil nitrate test measures the concentration of nitrate in the soil at a specific moment in time, including nitrate originating from organic inputs, fertilizer, and soil organic matter. This publication describes ...

Dan M. Sullivan, Nick Andrews, Aaron Heinrich, Ed Peachey, Linda Brewer | Aug 2023 | Extension Catalog publication Peer reviewed (Orange level)

Vegetable Degree-day Models: An Introduction for Farmers and Gardeners

Degree-days measure the amount of heat accumulated over time. Researchers have used years of this data to develop models that help farmers and gardeners predict harvest dates and other important events in select ...

Nick Andrews, Leonard Coop, Heather Stoven, Heidi Noordijk, Aaron Heinrich | Jan 2021 | Extension Catalog publication Peer reviewed (Orange level)

Nutrient and Soil Health Management for Sweet Corn (Western Oregon)

This guide integrates recommendations for nutrient management with cover cropping practices that promote soil health. Recommendations for nutrient rate, source, timing and placement for nitrogen, phosphorus, potassium, ...

Dan M. Sullivan, Ed Peachey, Aaron Heinrich, Linda Brewer | Jan 2020 | Extension Catalog publication Peer reviewed (Orange level)

Nutrient Management for Sustainable Vegetable Cropping Systems in Western Oregon

This publication reflects over 30 years of vegetable production research conducted in the Willamette Valley. It is divided into three main sections: sustainable soil health; soil testing and nutrient management; and ...

Dan M. Sullivan, Ed Peachey, Aaron Heinrich, Linda Brewer | May 2017 | Extension Catalog publication Peer reviewed (Orange level)

Snap Bean—Western Oregon, Nutrient Management Guide

Provides nutrient management information and recommendations for bush snap beans grown in western Oregon for processing or fresh market. Includes descriptions of plant nutrient deficiency with color photos, and information on optimum application rates, timing, and placement.

Aaron Heinrich, Dan M. Sullivan, Ed Peachey | Nov 2016 | Extension Catalog publication Peer reviewed (Orange level)

Integrated Clubroot Control Strategies of Brassicas: Nonchemical Control Strategies

Clubroot (causal organism, Plasmodiophora brassicae) is a major soilborne disease of brassica crops in the Willamette Valley. It’s incidence and severity is increasing due to a high demand for brassicas that has ...

Aaron Heinrich, Alexandra Stone, Dan M. Sullivan, James Myers, Ed Peachey | Aug 2016 | Extension Catalog publication Peer reviewed (Orange level)