The effct of fumigation of Nerium oleander leaves powder on the biological Performance of Bemisia tabaci

Abstract

Field experiments were done near Al- Rashdiya reagion to test the effect of fumigation with 2.5 , 5 and 7.5 gm of Nerium oleander leaves powder on the biological performance of Bemisia tabaci for 10 , 20 and 30 minutes inside the green house . The results indicated that percentage of different stage mortality increases with increasing of concentration of fumigant powder and time . Generally all larval stages were more susceptible than adults , nymphs , pupae and eggs respectively . As well as accumulative mortality were test to same of concentrations and time , significant differences were found among mortality of different stages for all concentrations that used in experiments ( P ˂ 0.05).