Scalicides for use on papaws in Queensland

Abstract

A number of different scale insects occur on papaws in Queensland (Brimblecombe 1961). Although commercial growers in this State are not as yet troubled by any of them, some are potentially serious pests. The oriental scale (Aonidiella orientalis (Newst.)) is troublesome in the tropics north of Australia and has reached pest proportions in Darwin. It is now known to occur at Mt. Isa and Thursday Island and could be a major pest should it enter the commercial papaw-growing areas further south.