Impact of four biofertilizers on the abundance of insect pests of eggplant, Solanum melongena (L) under soilless conditions: Evaluation of the net yield of fruits and nutrient contents of the plant.

Soil microorganisms can improve plant health by allowing broad-spectrum resistance of the treated plants against insect herbivores. The present study was conducted to evaluate the effect of four different types of biofertilizers; Azotobacter sp. , Azospirillum sp. , Bacillus megatherium, and Vasicular arbuscular endomycorrhizae (VAM) on the incidence and abundance of insect pests of the eggplant, Solanum melongena (L) during autumn season. The studied pests were; Bemisia tabaci, Empoasca sp. , thrips tabaci , two species of aphids, Aphis gossypii (Glover) and Myzus persicae