Growth and yield of soybean varieties with biochar application Amalia Tetrani Sakya, Muji Rahayu, Samanhudi, Gani Cahyo Handoyo and Muhammad Dio Nugroho Anindra Putra E3S Web Conf., 467 (2023) 01020 Published online: 20 December 2023 DOI: 10.1051/e3sconf/202346701020