Uji Beberapa Konsentrasi Ekstrak Akar Tuba (Derris elliptica Benth) untuk Mengendalikan Hama Kutu Daun (Aphis craccivora Koch) pada Tanaman Kacang Panjang (Vigna sinensis L.)

Abstract

Aphis craccivora is a major pest of bean plants that cause a loss of production of between 65.87% and reached more than 90% as a viral vector. Using the tuba root extract as an insecticide is expected to reduce the risk of crop loss by Aphis craccivora. This research aimed to obtain the appropriate concentration of tuba root extract (Derris elliptica Benth) to control Aphis craccivora on long bean. Research conducted experiments using a completely randomized design (CRD) with 6 treatments and 4 replications. Data were statistically analyzed using analysis of variance and further tested by (Duncan’s New Multiple Range Test) DNMRT at a rate of 5%. The results showed that the concentration of 2.5 g/l of water extract of tuba root effective for controlling Aphis craccivora with amortality rate of about 92.50%, while mortality beginning approximately 1.25 hours and 11.25 hours LT50.