Abstract

A laboratory trials were conducted to evaluate the efficacy of some plants extracts against two different aphid species.Evaluation included carnation (fruit and flowers) and neem (seeds) at rate of 2 1.5 ,1 and 2 ml/L respectively.The insecticides , Neemrich10% Ec and Dinomite50% w.p were used as control treatments.
Results showed that hexane exctrat of carnation gave a high activity against the two species of aphid (Aphis gossypii , Aphis nerii) reached to100 , 96.6 , 93.3% and 96.6, 93.3, 83.3 at concentrations of 2, 1.5 , 1 ml/L for the two species respectively, results also showed that the mortaliti percentages for Neemrich and Dinomite and hexanal extract of neem seeds was 100% for Aphis gossypii after the same time of treatment while it was 93.3 , 100 , 100% mortality percentage respectively for Aphis nerii.