Bio-efficacy of botanical pesticides against mealy cabbage aphid (Brevicoryne brassicae L.) and bio-safety against its natural enemies in cruciferous vegetable ecosystem of Kashmir
Akhtar Ali Khan
The two concentration of Neem oil (2% and 3%), castor oil (2% and 3%), Artemisia leaf extract (2% and 3%), Neem seed kernel extract (NSKE) @ 5% and6% and Azadirachtin (0.2% and 0.3%) compared with the treated check Dimethoate (Roger) @ 1% concentration with untreated check for their bio-efficacy against mealy cabbage aphid (Brevicoryne brassicae L.) and bio-safety against natural enemies were evaluated. The highest mean reduction of cabbage aphid (66.55%) was recorded against Azadirachtin @ 0.3%followed by 63.01% against same botanical pesticides@ 0.2% concentration while as lowest reduction was recorded 47.10% against Artemisia leaf extract (2%). The mean mortality of natural enemies (35.26%) against Artemisia leaf extract @ 3% followed by Azadirachtin @ 0.3% and was recorded as 32.11%. The least mortality of natural enemies was recorded as 22.92% against Artemisia leaf extract @ 3% as compared to treated check which was recorded as 70.00%. among all, Azadirachtin @ 0.3% exhibited best performance on the basis of reduction of cabbage aphid (66.55%) and also safer for natural enemies among the tested botanicals; hence, can be considered a potential botanical pesticide against cabbage aphid in Kashmir.
Akhtar Ali Khan. Bio-efficacy of botanical pesticides against mealy cabbage aphid (Brevicoryne brassicae L.) and bio-safety against its natural enemies in cruciferous vegetable ecosystem of Kashmir. J Entomol Zool Stud 2021;9(2):1332-1336.