INSECTICIDAL VERSUS NATURAL CONTROL OF WHITE WAX SCALE GASCARDIA DESTRUCTOR AT KENTHURST, N. S. W., DURING 1972–73

Abstract

On trees sprayed with white oil in January, 1973, the white wax scale population had completely died out by the end of March. The population persisted on unsprayed trees but at a very low level. By early June, 99.5% of the scales on the labelled units had died. High temperatures and parasitism by Anicetus communis (Annecke) appeared to be major mortality factors on unsprayed trees. Copyright © 1981, Wiley Blackwell. All rights reserved