Efikasi Insektisida Nabati Ekstrak Bunga Kembang Bulan (Tithonia diversifolia A. Gray) Terhadap Hama Ulat Grayak (Spodoptera litura F.) pada Tanaman Sawi di Laboratorium

Abstract

Tests have been carried out in the Laboratory of Quality and Pesticide Residues, Medan North Sumatra and Laboratory Faculty of Agriculture, University Medan Area from April to June 2015. The purpose of this study to determine the effectiveness of the flower extract moon (T. diversifolia) as a vegetable insecticides for pest control caterpillar armyworm (S. litura) on mustard plants in the laboratory. This study was conducted using a completely randomized design Non-factorial consisting of 5 treatments, flower extract of T. diversifolia with level, K0 = without extract (control), K1 = concentration of 4% or 4 g / 100 ml of solvent, K2 = concentration 6 % or 6 g / 100 ml of solvent, K3 = concentration of 8% or 8 g / 100 ml of solvent, K4 = concentration of 10% or 10 g / 100 ml of solvent. The results showed that the flower extract moon (T. diversifolia) can control the pest armyworm (S. litura). T. diversifolia flower extract with a concentration of 8% (K3) have effective control of S. litura. The percentage of S. litura larvae mortality is highest in K3 treatment (concentration of 8% or 8 ml extract / 92 ml solvent) on each day of observation (9 HSA) and the percentage mortality of larvae of S. litura lowest for the treatment K1 (67,5%).