Heriyadi, A. Sopian, and Iin Arsensi, “Respon Npk Dan Larutan Pgpr Terhadap Pertumbuhan Stek Lada (Piper Nigrum L.) Varietas Malonan 1: Response Of Npk And Pgpr Solution To The Growth Of Pepper Cuttings (Piper nigrum L.) Malonan Varieties ”, agri. j. ilmu. pertan., vol. 12, no. 2, pp. 157–164, Dec. 2023.