Apple Maggot Control Studies with Soil Insecticides1

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Abstract
The effectiveness of several soil insecticides, applied to the sad in replicated plots, was evaluated for the control of the soil-inhabiting stages of the apple maggot, Rhagoletis pomonella (Walsh). The results of 1 year's study are reported. Endrin effected 96% reduction over the check. This reduction was significantly different from that given by dieldrin, aldrin, and heptachlor. The latter materials gave 66%, 63% and 60% reduction, respectively. As endrin has already been accepted as an orchard rodenticide, its possibilities as a control measure for the apple maggot through soil applications is further enhanced. Its future, however, is contingent upon its residual control, a phase of research that is being continued.

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