DOSAGE RESPONSE OF THE STAGES OF CODLING MOTH, LASPEYRESIA POMONELLA (LEPIDOPTERA: OLETHREUTIDAE), TO FUMIGATION WITH METHYL BROMIDE

Abstract

AbstractProbit analysis of the dosage response of codling moth stages to methyl bromide indicated that adults were most, and pupae, least susceptible. Eggs were more resistant than cocooned larvae which were more resistant than larvae in fruit. There were no differences in susceptibility of the larval instars to methyl bromide. The rate recommended to kill larvae in fruit (32 g/m3 for 2 h) also killed eggs.