Qori Hafizah, Hamidah Hanum and 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), pp. 40-46. doi: 10.32734/jpt.v7i1.3597.