Harahap FS, Rauf A, Hidayat B, Walida H, Jamidi, Lisdyani. Availibility of P, K in paddy Land Under Organic application. Petrop [Internet]. 2018Dec.1 [cited 2024Apr.28];5(3):434-40. Available from: https://talenta.usu.ac.id/jpt/article/view/3117