The Impact of Biofertilizers and NPK Fertilizers Application on Soil Phosphorus Availability and Yield of Upland Rice in Tropic Dry LandB.N. Fitriatin, V.F. Dewi and A. YuniartiE3S Web Conf., 232 (2021) 03012DOI: https://doi.org/10.1051/e3sconf/202123203012