NUGROHO, P. A. DINAMIKA HARA KALIUM DAN PENGELOLAANNYA DI PERKEBUNAN KARET. Warta Perkaretan, [S. l.], v. 34, n. 2, p. 89–102, 2015. DOI: 10.22302/ppk.wp.v34i2.260. Disponível em: https://ejournal.puslitkaret.co.id/index.php/wartaperkaretan/article/view/260. Acesso em: 22 jul. 2024.