Biosynthesis silver nanoparticle using Bacillus thuringiensis strain BT2 and its potential use against Spodoptera frugiperda J.E. Smith (Lepidoptera: Noctuidae)Syaiful Khoiri, Isna Nur Rahmawati, Achmad Djunaedy, Gita Pawana and Dita MegasariBIO Web Conf., 146 (2024) 01009DOI: https://doi.org/10.1051/bioconf/202414601009