Studies were conducted to compare preference among Bemisia tabaci Gennadius, biotype B instars for parasitization by Eretmocerus mundus Mercet and Encarsia pergandiella Howard when provided one instar only, two different instars, and four different instars simultaneously. In the single-instar no choice treatment, Er. mundus was more successful in parasitizing the younger host instars, while En....

Intercropping of aromatic plants provides an environmentally benign route to reducing pest damage in agroecosystems. However, the effect intercropping on natural enemies, another element which may be vital success integrated management approach, varies different systems. Rosemary, Rosmarinus officinalis L. (Lamiaceae), has been reported repellent many insect species. In this study, impact sweet...