Ardika, Risal, and Andi Nur Cahyo. 2020. “Soil Water Content Below 33.7% Progressively Reduces the Latex Yield of Rubber PB 60, A Study in Sembawa, South Sumatra, Indonesia”. Journal of Tropical Crop Science 7 (03):97-103. https://doi.org/10.29244/jtcs.7.03.97-103.