The stem borer Busseola fusca (Lepidoptera: Noctuidae) on sorghum in the highland of Eritrea. Ecology and management

behaviour busseola fusca comportamiento comportement control de insectos crop yield damage date de semis depredadores dynamique des populations enemigos naturales ennemi naturel eritrea fecha de siembra fertilisation fertilizer application highlands hosts insect control insecticidas insecticide insecticides mortalidad mortalite mortality natural enemies oviposition parasitoides parasitoids pennisetum glaucum ponte population dynamics predators rendement des cultures rendimiento de cultivos sorghum bicolor sowing date stem eating insects zea mays