The present invention is directed to methods of reducing insect-vectored viral infection and transmission in plants, methods of reducing damage to plants caused by viral infection, and methods of crop enhancement including methods for improving plant growth, vigour and yield, by application of a combination of an anthranilic bis-amide or an aminothiadiazole (ryanodine receptor modulator) insecticide and a plant activator, to compositions comprising the combinations and to plant propagation material treated therewith.
