The Effect of Dosage Chiken Manure and NPK Fertilizer on Growth and Yield of Sorghum on Post Tin Mining Land : Pengaruh Dosis Pupuk Kotoran Ayam dan NPK terhadap Pertumbuhan dan Hasil Tanaman Sorgum di Lahan Pasca Tambang Timah. agrosainstek [Internet]. 2021 Dec. 31 [cited 2025 Nov. 5];5(2):100-8. Available from: https://agrosainstek.ubb.ac.id/index.php/agrosainstek/article/view/162