Spinosad is an effective grain protectant against resistant strains of Rhyzopertha dominica (F.)

Abstract

Grain protectant insecticides are used in many parts of the world to provide long term protection for stored grain. One of the most serious pests of stored grain is the lesser grain borer, Rhyzopertha dominica (F.), which has demonstrated an ability to develop resistance to a range of grain protectants. The biologically derived insecticide, spinosad, has been the focus of recent research, investigating its potential as a grain protectant. In this paper we detail the current status of resistance to grain protectants in R. dominica, and summarise research showing that spinosad is effective against resistant strains of this species.