Effects of flowering field margins on flight activity of the diamondback moth (Plutella xylostella L.) and its parasitoids Diadegma spp., and observations on distance from field edge, and vertical position of traps

Effects of flowering field margins on flight activity of the diamondback moth (Plutella xylostella L.) and its parasitoids Diadegma spp., and observations on distance from field edge, and vertical position of traps