Cabbage Aphid & Green Peach Aphid

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.

Cabbage White Butterfly

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.

Diamondback Moth

Diamondback Moth (DBM) causes damage to cole crops in two ways: larvae chew holes in the foliage, and pupae contaminate heads. This page provides DBM news and updates as well as basic information,scouting and monitoring techniques, and management options.

Regional Pest Monitoring Program


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


Pesticide Evaluation and Education, Magnitude of Residue Field Trial Pendimethalin/Broccoli and Cauliflower


  • 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.