Broccoli

Report to the Oregon Processed Vegetable Commission

Amy Dreves
OSU Dept. of Crop and Soil Science

Robert McReynolds
NWREC

Dan McGrath
OSU Dept. of Hort

Ed Peachey
OSU Dept. of Hort

Objectives:

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.

OBJECTIVES FOR 1997:

Objectives

• Compare potential of fertilizer impregnated with Goal and pyridate (Tough herbicide) for postemergence weed control in direct seeded broccoli and cauliflower.
• Evaluate impact of soil moisture and tillage schedule on Goal efficacy.

Report to the Oregon Processed Vegetable Commission

Jim Meyers
OSU Dept of Horticulture

Objectives:

Objectives

This project has two main objectives:

• 1) Provide a real-time monitoring and reporting system to provide decision support for pest management to processed vegetable growers in W. Oregon,
• 2) Provide the long term research basis to better understand pest outbreaks that can be used to improve implementation of objective 1. 

Cooperators: Jim Todd, Ed Peachey, Dan McGrath, Glenn Fisher

Objective:

• The objective of the trial was to collect samples of broccoli grown in plots to which pendimethalin had been applied. The samples were to be analyzed in order to establish the level of the herbicide remaining at harvest in comparison to unsprayed broccoli plants. The results were to be included in a petition to EPA requesting a tolerance for pendimethalin residues in all head-forming brassicas.