Qori Hafizah, Hamidah Hanum, & Damanik, M. M. B. . (2020). Providing azolla and goat manure to increase nutrient N and growth of lowland rice (Oryza sativa L.). Jurnal Online Pertanian Tropik, 7(1), 40-46. https://doi.org/10.32734/jopt.v7i1.3597