Inducing Sterility in the Onion Maggot

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Abstract
Adults of the onion maggot, Hylemya antiqua (Mcigen), were sterilized and oviposition was reduced when apholate or hempa was added to their food in laboratory tests. Apholate was more effective than hempa at dosages of 0.1, 0.25, 0.5, and 1% of the diet. Sterilizing effects were reversible at 0.25 and 0.5% apholate when adults were removed from the diet, but sterility was permanent at 1 and 2% Large-cage tests to simulate field conditions resulted in 99+% apparent sterility and insect control. Enzymatic yeast hydrolysate increased the attractiveness and efficiency of the baits containing sterilant.