Insecticidal effect of three plant products &Commercial neem(Nimbecidine) against Faba bean beetle Bruchidius incarnates (Boh.)

Abstract

Laboratory experiments had been carried out to study the insecticidal effect of Henna leaves powder , Rehan leaves ethanol extract , the fumigant action of Kafour leaves organic extract and Commercial neem on the adults of faba bean beetle Bruchidius incarnates (Boh.). The use of Henna leaves powder caused high mortality to the tested insect during 72 hours in comparison with the control , the highest concentration 10% gave the best result which was 40% mortality . The use of Rehan leaves ethanol extract caused high mortality during 72 hours. The highest concentration 10% gave the best result 63.3% mortality in comparison with the other concentrations . When the fumigant action of Kafour leaves organic extract tested against this insect, mortality increased with increase in the concentration and the exposure period . The highest concentration 10% gave the best result which was 28.3% mortality . The use of Commercial neem against the same insect was more effective on the highest concentration 2.5% which gave 39.1% mortality . Rehan leaves extract gave the best results compared to Hinna leaves powder , Kafour leaves extract and the commercial neem. The result was as follows : Rehan > Hinna > Commercial neem > Kafour As an important result of these experiments, no loss of weight was observed as a result of insect feeding,