oa Journal of the Entomological Society of Southern Africa - "Gammexane" and DDT in fruit fly baits - a preliminary study



In view of the increasing number of complaints from farmers that they were not able to control the Mediterranean fruit fly (Ceratitis capitata Wied.) satisfactorily in orchards in the Western Province, laboratory investigations commenced by Nel in 1940, were continued by the writer during the months March to June, 1945. The recent experiments were designed essentially to determine the concentrations of the newly developed toxicants, gammexane and DDT, which would be economically effective when ingested by this fruit fly. The present paper embodies some of the results of the preliminary experiments. The detailed investigation of the effectiveness of baits containing these toxicants exposed to various laboratory and outdoor conditions is proceeding.


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