Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Insect growth regulators and conventional insecticides for suppression of citrus mealybug.

Abstract

The effectiveness of sprays of 3 insect growth regulators and 6 conventional insecticides against the citrus pest Planococcus citri (Risso) was evaluated in greenhouse and field tests in Texas during 1974-77. In the greenhouse, 0.10% kinoprene, 0.05% dimethoate and 0.025% methidathion controlled infestations on Mexican lime. In full-season tests in grapefruit orchards, 0.025-0.10% kinoprene, 0.025% CGA-13353 [ethyl 3-methyl-4-[4-(phenylmethyl)phenoxy]-2-butenoate] and 0.025-0.10% epofenonane (Ro 10-3108) gave control comparable to that obtained with 0.06% dimethoate. In tests on the efficacy against specific life stages, both insect growth regulators and conventional insecticides were most effective against first-instar nymphs and least effective against adults.