Pengaruh aplikasi ekstrak daun mimba (Azadirachta indica) terhadap kutu daun (Aphis sp.) pada tanaman kacang panjang (Vigna sinensis L.)

Abstract

This study aimed to determine the effect of neem leaf extract (A. indica) on aphids (A. craccivora) infesting yardlong bean plants under laboratory conditions. The research was conducted at the Plant Pest Science Laboratory, Faculty of Agriculture, University of Lampung, from August to November 2025. The experiment employed a Completely Randomized Design (CRD) with five concentrations of neem leaf extract: 0% (control), 5%, 10%, 15%, and 20%. The observed variable was the mortality of A. craccivora up to 4 days after application (DAA). The results showed that neem leaf extract application caused mortality in A. craccivora. Aphid mortality increased with increasing concentrations of neem leaf extract. The application of neem leaf extract at a concentration of 20% was sufficiently effective, resulting in 80% mortality at 4 DAA. These findings indicate that neem leaf extract has potential as a botanical pesticide for controlling A. craccivora.