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How to Manage Pests

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

| Start key | Management guidelines: Alfalfa | Cotton |

Based on the key characteristics, the aphid is likely to be

Cotton (or melon) aphid (Aphis gossypii)

Three cotton aphids.
Click on photo for larger image

Find out more about cotton aphid on

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