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This handbook is intended as a ready reference guide to the control and management tactics for the more important plant diseases in the Pacific Northwest. The specific cultural, biological, and chemical recommendations are intended to manage a specific plant disease but may not always be appropriate under all production circumstances. The synthesis of a specific management recommendation should be done by a qualified individual. For this reason, this book should be used by—and has been expressly written for—county Extension agents, consultants, field and nursery people, and chemical industry representatives. Information in this publication is in a state of constant change.

See also: Pacific Northwest Plant Disease Management Handbook

The Pacific Pests, Pathogens and Weeds apps have been developed to provide extension staff and lead farmers with relevant information to help them determine which organisms are causing crop problems and what appropriate action should be taken. This includes immediate corrective measures, as well as the steps that need to be taken to prevent such problems occurring in the future.