Waramui, Yance, Titiek Islami, and S Sudiarso. 2019. “Effects of Ameliorant and Fertilizer on the Growth and Yield of Maize Grown in Peatlands Soil of West Kalimantan Indonesia”. Journal of Degraded and Mining Lands Management 6 (3). Malang, Indonesia:1779-87. https://doi.org/10.15243/jdmlm.2019.063.1779.