THE INFLUENCE OF AIR CURRENTS ON THE INSECTICIDAL ACTION OF DDT, BENZENE HEXACHLORIDE, HERCULES TOXICANT 3956, AND VELSICOL 1068.

Abstract

In March, 1946, the writers reported in Scientific Agriculture (1) that benzene hexachloride showed pronounced fumigant action and that air currents as slow as 2 m.p.h. lowered its effectiveness against insects to a marked extent. The present paper deals with further experiments with benzene hexachloride and gives preliminary data on the fumigant action and effect of air currents on three other chlorinated hydrocarbons, viz., DDT, Hercules Toxicant 3956 (a chlorinated terpene) and Velsicol 1068 (a mixture of isomers with the empirical formul C10 H6 Cl8).