Efficacy of Extracts of Garlic (Allium Sativum) and Neem Leaves (Azadirachta Indica) Against Liriomyza Spp.

Abstract

Lettuce is one of leafy vegetables that has high economic value. Infestation of Liriomyza spp. on lettuce leaves (Lactuca sativa L.) could reduce its quality significantly. This research aimed to study the effectiveness of garlic and neem leaves extract to control Liriomyza spp. Lettuce was cultivated in Nutrient Film Tecnique (NFT) hydroponic system. The experiment was arranged in a Completely Randomized Design (CRD) with 9 various concentration of garlic and neem leaves extract, i.e., 15% garlic extract + 15% neem leaves extract, 15% garlic extract + 30% neem leaves extract, 15% garlic extract + 45% neem leaves extract, 30% garlic extract + 15% neem leaves extract, 30% garlic extract + 30% neem leaves extract, 30% Garlic extract + 45% neem leaves extract, 45% garlic extract + 15% neem leaves extract, 45% garlic extract + 30% neem leaves extract, 45% garlic extract + 45% neem leaves extract, and control (water). The results showed that the concentration of 45% garlic extract + 45% neem leaves extract resulted in 100% mortality of Liriomyza spp. imago, the damage intensity of 26.3%, leaves number of 11, plant height of 28.53 cm, fresh weight of 149.67 g and economic weight of 139.67 g. Application of botanical pesticide with concentration 45% garlic extract + 45% neem leaves extract could control Liriomyza spp. infestation in hydroponic lettuce plants.

Keywords

• lettuce
• botanical pesticide
• garlic
• neem leaves
• and liriomyza spp.