Bollworm Control with Chlorinated Camphene, DDT, and Mixtures of Benzene Hexachloride and DDT

Abstract

Several of the new insecticides were tested in small-plot and large-scale field expts. at Waco, Tex., during 1947 against light to moderately heavy infestations of the boll-worm, Heliothis armigera. The following dusts gave about equal control of the bollworm in these expts.: 20% chlorinated camphene; a mixture containing 5% of DDT and enough technical benzene hexachloride to bring the gamma isomer content to 3%; and a dust containing 10% of DDT, Each of these dusts gave better control than calcium arsenate. In some instances severe red spider mite infestations resulted following the use of chlorinated camphene in an inert diluent, but when at least 50% of sulfur was included in the dust, there was no resultant red spider mite build-up.