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Abstract
Candidate insecticides were tested on high moisture sorghum as protectants against several species of stored-grain insects. The addition of 0.2 percent of propionic acid by weight to the high moisture sorghum to prevent spoilage did not influence insect infestations. The order of general effectiveness of the treatments at dosages applied was: pirimiphos-methyl > chlorpyrifos-methyl > fenitrothion > malathion > malathion-diatomaceous earth dust.