This study aims to determine the quality of compost based on P, K, CEC, of compost from oil palm fronds with the addition of ruminant rumen bioactivator (goats, cattle and buffalo). The materials used in this study were oil palm fronds and ruminant rumen obtained from the Indralaya, South Sumatra. This research was conducted at the Compost House, Department of Soil, Faculty of Agriculture, Sriw…