Comparative Efficacy of Botanicals and a Synthetic Insecticide against Sucking Insect Pests of Brinjal

Abstract

Sucking insect pests (jassids and whitefly) are destructive insect pests of brinjalin Charsadda, Khyber Pakhtunkhwa, Pakistan, that cause considerable yield losses. For their efficient control, one synthetic insecticide (Lambda-cyhalothrin: 2.5 % EC) as a standard and five botanical extracts were evaluated to determine the effectiveness of botanical extracts as compared to synthetic insecticide and control.Experiment was designed in RandomizedCompleteBlockDesignwith seven treatments (Lambda-cyhalothrin, chili garlic extract (4%), chili garlic (4%) + onion (Allium ceipa) extract (4%),bakain (Melia azedarach) leaves extract (5%) + neem (Azadirachta indica) oil (1%),bakain(M. azedarach) leaves extract (5%)+ bakain(M. azedarach)fruit extract (7%), bakain(M. azedarach)leaves extract (5%)and control. All the treatments were applied in their respective plots at 14 days intervals. Results revealed that mean density ofjassidswas lowest in Lambda-cyhalothrin treatment (2.39, 1.83, 0.40), chili garlic (2.59, 2.07, 0.50), and chili garlic+ onion extract (2.71, 2.35, 0.50) after first, second and third spray, respectively. Whitefly mean densitywas significantly lower in Lambda-cyhalothrin (2.21) treatment, followed by chili garlic (2.26) and chili garlic + onion extract (2.37). In addition, the highest yield was recorded in Lambda-cyhalothrin treatment (10370 kg ha^-1), followed by chili garlic extract (9019 kg ha^-1) and bakainleaf extract + neem Oil (9000 kg ha^-1)significantly higher than control (3567kg ha^-1). Based on current research, ………. Is recommended for effective control of Jassids and whiteflies among plant extracts.