PestSmart Diagnostic Field Guide
The first step to identifying possible solutions to a plant health problem is understanding the problem correctly. CABI’s PestSmart Diagnostic Field Guide supports diagnostic decisions by showing relationships between common symptoms on plants and the various possible causes.
This document provides images and descriptions of many typical symptoms associated with biotic and abiotic factors that harm plant health. Among the biotic factors, the major pest groups are represented. Throughout the Field Guide, the term ‘pests’ will refer to all animals, microorganisms and weeds that damage plants. The most common abiotic factors of plant health decline are also highlighted. This book does not attempt to show all possible plant/disorder combinations; therefore, it is important to understand the different types of symptoms caused by each factor and to use that knowledge to make a field diagnosis.
The Field Guide consists of ‘ready reckoners’ (simple information tables for quick and easy reference) that serve as reminders of symptom–cause associations and therefore can assist in diagnosing plant health problems. Many biotic and abiotic factors create very similar symptoms in plants, therefore a table is provided (Potential sources of confusion) that identifies these areas of overlap and provides methods to differentiate between the possible causes.
The Field Guide concludes with a short section on important points to remember when selecting management options for crop problems following an integrated pest management approach.
Compiled by Phil Taylor
Version 1.2
A tool to diagnose crop problems and make
recommendations for their management
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