LABORATORY ASSESSMENT OF ORGANIC INSECTICIDES FOR CONTROL OF CERTAIN LEPIDOPTEROUS LARVAE

Abstract
Recent developments in the insecticide field have made available to the economic entomologist a wide variety of chemical compounds which exhibit high toxicity to certain species or groups of insects. The pyrethrins rotenone and nicotine, reinforced by the dinitro compounds and thiocyanates of prewar times, have now been joined by the chlorinated aromatic hydro-carbons: DDT, gammexane, chlordane and toxapohene.