SudadiU.; RamadhanL. M. A. H.; NugrohoB.; HartonoA. Dynamics of Phosphorus Fractions and Chemical Properties of Paddy Soils As Related to Paddy Rice Cropping Index and Irrigation Practices: Dinamika Fraksi Fosfor Dan Sifat Kimia Tanah Sawah Terkait Indeks Pertanaman Padi Sawah Dan Praktik Pengairan. J. Il. Tan. Lingk. 2019, 19, 19-25.