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United States Department of Agriculture

Agricultural Research Service

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Image Number K10871-1

Peter Landolt, head of ARS's Fruit and Vegetable Insect Research Unit, Wapato, Washington, applies a plant hormone precursor to a potato plant to induce chemical defenses against insects.

Photo by Peggy Greb.

640 pixels wide: (k10871-1.jpg)

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Last Modified: 8/13/2016
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