CD Skripsi
Uji Beberapa Konsentrasi Ekstrak Daun Sirih Hutan (Piper Aduncum L.) Berpelarut Organik Terhadap Mortalitas Ulat Grayak Kedelai (Spodoptera Litura F.) Di Laboratorium
ABSTRACT
Soybean (Glycine max L.) is a major food crop after rice and corn according of its high plant-based protein content. Spodoptera litura is a primary pest of soybeans and reported cause yield loss up to 80% by feeding on leaves. Commonly, the farmers use synthetic chemical pesticides for control the pest, but it has negative impact for environment. Botanical pesticides offer an environmentally friendly alternative way. Forest betel leaf (Piper aduncum L.) extract is potential ingredient for botanical insecticide. This study aimed to determine the effective concentration of forest betel leaf extract with organic solvents against S. litura mortality in laboratory conditions. A Completely Randomized Design (CRD) was used with five concentrations (0%, 0.25%, 0.5%, 0.75%, and 1%) and four replications. Each unit contained 10 third-instar larvae, tested using the spray method. Parameters observed included initial mortality time, LT₅₀, LC₅₀, LC₉₅, daily and total mortality. Data were analyzed descriptively with probit analysis (POLO-PC) and ANOVA followed by a 5% LSD test using SAS 9.1. The result showed that 1% extract concentration was most effective treatment according of 85% of larvae mortality, 0.28% in LC₅₀, 2.85% in LC₉₅, initial mortality at 3.5 hours and LT₅₀ at 37 hours.
Keywords : Botanical Insecticide, Forest Betel Leaf Extract, S. Litura, Soybean
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