Lygus Spp.: Damage to Beans by Reducing Yields, Seed Pitting, and Control by Varietal Resistance and Chemical Sprays12

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Abstract
Feeding damage by Lygus hesperus Knight, L. elisus Van Duzee, L. lineolaris (Palisot de Beauvois), and L. disertus Knight to beans in Washington reduced yield and caused pitting or scarring of the bean seed. Amount of damage varied between varieties of beans and year of tests probably because of climatic conditions. Control of Lygus on beans was effective for several weeks after treatment with dimethoate and ethion. Trichlorfon and ULV malathion also gave control, but both had relatively shorter periods of effectiveness.

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