PEMANFAATAN EKSTRAK AKAR TUBA (Derris elliptica B.) DALAM MENGENDALIKAN KECOAK JERMAN (Blattella germanica L.)

Abstract

German cockroach (Blattella germanica L.) are insect pests and vectors of various diseases, so their populations need to be controlled using biopesticides that are easily biodegradable and do not have a negative impact on the environment. The tuba plant (Derris elliptica B.) is a plant that is used as a natural pesticide, especially in its roots. The purpose of this study was to determine the toxicity of aqueous extracts and methanolic extracts of tuba roots based on the LC₅₀ and LT₅₀ values from probit analysis and to compare their effectiveness using the One Way ANOVA test to controlling german cockroach using the bait method with varying concentrations of treatment for 10 individual cockroach with four replications. The LC₅₀-72 hours of tuba root aqueous extract and methanol extract using the feed method were 62.446% (v/v) and 71.857% (w/v). The LT₅₀-60% value of the feed method water extract was 57.926 hours, while the LT₅₀-80% value of the feed method methanol extract was 60.659 hours. The aqueous extract of tuba roots was more effective in controlling german cockroaches than the methanol extract of tuba roots using the bait method.