The efficacy of range of compounds: three botanical insecticides (NeemAzal T/S, Trifolio S-forte and an extract of Quassia amara L.) and two pyrethroid insecticides, lambda-cyhalothrin (Karate 9.4% S.C) and deltamethrin (Decis 2.8% E.C.) were evaluated to control Rhopalosiphum padi (L.) and Metopolophium dirhodum (Wlk.). Different concentrations were used to study efficiency of the tested compounds on both aphid species 24, ... إقراء المزيد