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How to Manage Pests

Identification: Key to Aphids Commonly Found in San Joaquin Valley Alfalfa and Cotton

Start key

Additional reading

Find more information and keys to aphids in the following books:

Blackman, R. L., and V. F. Eastop. 1984. Aphids on the world’s crops. An identification guide. Wiley. New York. Keys to aphids, based on the host plant. Highly recommended, but expensive.

Chaney, W. E., and M. A. Lee. 1992. Common aphid pests on vegetable crops in the Salinas valley. University of California, Monterey County Cooperative Extension Service, Salinas, California. Keys to common vegetable aphids. Excellent keys that work equally well for the San Joaquin Valley. Highly recommended. Available for $5.00 from UC Cooperative Extension, Monterey Co., 1432 Abbot Street, Salinas, CA 93901. Phone (831) 759-7350.

Statewide IPM Program, Agriculture and Natural Resources, University of California
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