The purposes of this research are, to evaluate soil physics and soil Chemical suitability for rubber crop. This research was done at Gelumbang Subdistrict, Muara Enim Regency, south Sumatera and the soil samples ware analyzed at Soil Chemistry, Biology, and Fertilizy Laboratories, Soil Science Departement, Agriculture Faculty, Sriwijaya University. This research was conducted fforn June to Augu…