![]() ![]() By 14 d after hatch, larvae were no longer on plants during the daytime direct observations revealed that fifth instars climbed plants to feed between 21 hours, illustrating the impractically of using larval counts to make management decisions. Infesting with at least one egg mass per 1.5 m, or as few as two larvae per 0.3 m, of row resulted in significantly more pod damage and pick than in uninfested plots. Our objectives were to better understand the relationship between cutworm infestation and damage in dry beans, and to determine the best method and timing of insecticide application to reduce pick. The western bean cutworm, Striacosta albicosta (Smith) (Lepidoptera: Noctuidae), recently expanded its range from the western United States into the Great Lakes region of the United States and Canada, threatening eastern dry bean production. ![]()
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