Improving Rice (Oryza sativa L.) Productivity Using Coconut Shell Wood Vinegar and Trichoderma-Enriched Biochar in Suboptimal SoilAtika Suri, Syafrani Syafrani, Hermiza Mardesci, Anisa Mutamima, Farag M. Malhat and Indra PurnamaE3S Web Conf., 678 (2025) 01005DOI: https://doi.org/10.1051/e3sconf/202567801005