Cindy Ocamb, Extension Plant Pathologist, discusses her research on chlorotic leaf spot (formerly light leaf spot, Pyrenopeziza brassicae), how to identify this emergent disease, and management strategies.
Learn about identifying and managing cabbage maggot, including using the degree-day model on the US Pest website.
Weed 'Em and Reap Part 2: Reduced tillage strategies for vegetable cropping systems [DVD]. A. Stone. 2006. Oregon State University Dept. of Horticulture. Corvallis, Oregon. Available at: http://www.weedemandreap.org (verified 17 Dec 2008).
Mark Schonbeck. Virginia Association for Biological Farming. Floyd, VA.
Winter-Killed Cover Crops
This handout summarizes the results from clubroot resistant brassica (cabbage, broccoli, cauliflower, Napa cabbage, etc) variety trials conducted in 2015-16 on farms in the Willamette Valley of Oregon as well as in greenhouse screening trials.
Photo by Lane Selman
Myers, J.R. 2006. Outcrossing Potential for Brassica Species, and Implications for Vegetable Crucifer Seed Crops of Growing Oilseed Brassicas in the Willamette Valley. OSUES SR 1064.
The Cabbage Aphid can cause significant economic loses in broccoli grown in the Willamette Valley (Figure One). The feeding of the aphid on the broccoli plant may reduce yield slightly, but the real damage it causes is contamination. The cabbage aphid contaminates the harvested heads of broccoli. This can result in rejection of entire loads of broccoli by the quality assurance program of broccoli processors. Once the aphids have moved up into the developing broccoli head, it is possible to kill them, but it is no longer possible to remove them as a contaminant.
The Cabbage White Butterfly can cause damage to several cole crops in the Willamette Valley. This page provides some basic information about the pest and discusses management and controls methods. Detailed scouting and monitoring techniques are provided as well as a risk assessment for spray decisions.