Jarkani, Akhmad Sopian, Mahdalena. Effect of Fertilizer and Fertilizer Manure Nickerson Star Swallow on Growth Seeds Rubber (Havea brasiliensis Muell Arg) Origin Grafting: Pengaruh Pemberian Pupuk Nickerson Star dan Pupuk Kotoran Burung Walet Terhadap Pertumbuhan Bibit Tanaman Karet (Havea brasiliensis Muell Arg) Asal Okulasi. agri. j. ilmu. pertan. [Internet]. 2015 Dec. 30 [cited 2024 Jul. 3];4(2):44-8. Available from: https://journal.uwgm.ac.id/agrifarm/article/view/1328