Chemical and biological control recommendations are based on the information available in December of the preceding year. Legal uses of many pesticides are continually changing. Changes may include de-listing a crop or site, different formulations that require different application rates, new restrictions on preharvest applications or reentry periods, and unique circumstances. Therefore, always read the current label before using any product. Information in this publication is in a constant state of change.
New information is added and existing information is updated.
With so many changes and people involved, there is always the possibility of error. We appreciate being informed of any errors that you may detect. Suggestions for improvement are welcomed, also. We have attempted to make this book responsive to the needs of the people who use it and will continue to strive for that in the future. The information herein is supplied with the understanding that no discrimination is intended and that listing of commercial products, necessary to this handbook, implies no endorsement by the authors or the Extension Services of Oregon, Washington, or Idaho.