Efficacy of systemic insecticides on the gall wasp <i>Quadrastichus erythrinae</i> in wiliwili trees (<i>Erythrina</i> spp.)

Abstract

The results indicate that, among the three insecticides tested, imidacloprid is most effective against EGW in the trees. Concentrations of imidacloprid in the leaves need to be 4 mg kg(-1) or higher for good EGW control.