Effects of Mold Inhibitors in Larval Diet on the Biology of the Cabbage Looper123

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Abstract
When 7 mold inhibitors were tested alone and in combination in the larval rearing diet of Trichoplusia ni (Hubner), effects on pupal weight, eclosion, adult deformity, oviposition, and egg viability through 4 generations were slight and variable. Ottasept® (3,5-dimethyl,4-chlorophenol) and sorbic acid at more than 1000 and 4000 ppm, respectively, were ovicidal when they were incorporated in the diet; when they were suspended in agar, sorbic acid at more than 750 ppm and Ottasept at 100 ppm were ovicidal by fumigant action alone. Butyl p -hydroxybenzoate incorporated in the diet caused 10–40% unsilked pupae. High concentrations of butyl p -hydroxybenzoate, methyl p -hydroxybenzoate, and sorbic acid lengthened the time required for larval development.

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