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Black pecan aphid

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Black pecan aphid

 
Pecan black aphid. Photo by Bart Drees.

A black pecan aphid. Photo by Alejandro Calixto.

The black pecan aphid is a pest of pecan. While feeding, the black pecan aphid injects a toxin that causes the leaf tissue between major veins to turn bright yellow. These damaged areas, up to 1/4 inch across, turn brown and die. Infested leaves soon fall. Premature defoliation reduces nut fill and the following year’s production.

 

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