Test of Land Potential Sensor Tools Based on Biomass on Measurements of Temperature, Moisture, and Soil pH and Their Relationship to the Biomass Values in Marginal LandZulfikar Zulfikar, Munawarah Munawarah and Tholib HarionoBIO Web Conf., 91 (2024) 01027DOI: https://doi.org/10.1051/bioconf/20249101027