Control of Acanthoscelides obtectus Say (Coleoptera: Bruchidae) in Phaseolus vulgaris L. Seed stored on small farms—II. Germination and cooking time

Treatments which successfully controlled bruchids in on-farm experiments were evaluated to determine effects on seed quality and cooking time. Relative cooling time was determined by cooking beans to the half-cooked point in a modified Mattson cooker. Germination was determined by trials planted in sand, and seedling vigor was estimated by dry weight of 8-day old seedlings. Cooking time, germination, and seedling vigor were not significantly changed by storage treatment with vegetable oil, threshing residues, kitchen ash, Malathion and black pepper. Analysis of bruchid damage on seed quality showed a decline in germination and seedling vigor related to the number of emergence holes.