الفهرس | Only 14 pages are availabe for public view |
Abstract The present investigation deals with the efficiency of certain pesticides on population density of certain sucking pests with regard to some of’ their predators. The sucking pests were jassids, Empoasca lybica; white files, Bemisia abaci; spider tee Tetranychus cinnaoarinus and aphids, Aphis gossip test ed predators under laboratory conditions were spider Amblyseous undecimpunctata and Faederus aIfierii, while the first two ones were studied under field conditions. The tested materials were: Methomyl, Decamethrin, Diflubenzuron, Chlorpyriphos and Dimethoate. |