The cotton jassid problem in Queensland

Abstract

The cotton jassid (Empoasca masculata) affecting American Upland varieties of cotton grown in Queensland is shown to differ from the more important species affecting species elsewhere in that it restricts its activity to the terminal growth of the plant. Soil condition, cultural treatment, time of planting, and variety of cotton are shown to influence plant susceptibility to jassid injury. The breeding of jassid-resistant varieties is stated to be the only control measure which is likely to practicable.