CD Skripsi
Uji Beberapa Konsentrasi Ekstrak Daun Mimba (Azadirachta Indica A. Juss) Untuk Mengendalikan Larva Lamprosema Indicata F. Pada Tanaman Kedelai (Glycine Max L. Merill)
The Lamprosema indicata Fabricius larvae is one of the main pests in soybean plantation, which cause up to 80% damage. The control alternative is the use of neem leafs (Azadirachta indica A. Juss) which has the potential as botanical insecticide. This research aim to find out the effective concentration of neem leafs extract to control Lamprosema indicata F. larvae on soybean plants (Glycine max L. merill). The research was conducted at the Laboratory Plant Pest and Experimental Garden in Faculty of Agriculture, University of Riau from May to October 2018. The research has been carried out by using a completely randomized design (CRD) with 6 treatments and 4 replications in order to obtain 24 experimental unit. Treatment consist of several concentrations of neem leafs extract 0 g.l-1 water, 20 g.l-1 water, 40 g.l-1 water, 60 g.l-1 water, 80 g.l-1 water and 100 g.l-1 water. The results showed that the concentration of 80 g.l-1 water is effective to control the L. indicata larvae with initial death time of 5.50 hours and total mortality 87.50%.
Keywords: Soybean plants, Lamprosema indicata larvae , botanical insecticides, neems leafs extract
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