Abstract

Commercial formulations of 9 commonly available insecticides were tested in the laboratory against the psychid Pteroma plagiophleps, a serious pest of forest plantings of Albizia falcataria and avenue plantings of Delonix regia in Kerala. Of the compounds tested, 0. 1 quinalphos gave the highest mortality (100), followed by 0. 05 methyl parathion [parathion-methyl]. Permethrin and cypermethrin were unsatisfactory at the concn tested