Biological preparations from crop waste for organic farming Asilkan Dzhumanazarova, Natalia Stozhko, Dzhanymbu Dzhorupbekova, Natalia Gutsalyuk and Maria Bukharinova E3S Web of Conf., 537 (2024) 10010 Published online: 13 June 2024 DOI: 10.1051/e3sconf/202453710010