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Potato Leafhopper Management in Alfalfa

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Identification

Potato Leafhopper life stages.

Line drawings of potato leafhopper coutesy of Purdue University's Corn & Soybean Field Guide (CRW) and Field Crop Pest Management Manual (IPM-1) PLH.

  • Adults are lime green and can fly.

  • Nymphs are yellow-green and cannot fly.

  • PLH adults overwinter in the South, then travel to New York on spring storms.

  • Females lay their eggs in alfalfa leaves after arrival.

  • Each generation lives approximately 28 days. There may be more than one generation per season.

  • The greater the heat, the faster the generations will develop.

  • Both adults and nymphs can cause damage.

  • Damage symptoms consist primarily of V-shaped yellow patches on the leaves and possibly stunting of the plant.

  • Primary value loss occurs from the reduction of protein. However, excessive feeding may cause dry matter yield loss as well.

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These pages are maintained by the New York State IPM Program, part of Cornell Cooperative Extension. All material is protected by Section 107 of the 1976 copyright law. Copyright is held by Cornell University and the New York State IPM Program.