The research aims to know the influence of the combination of compost and NPK fertilizer, the main factors of compost and NPK fertilizer and get the best treatment. The research has been done in farmer’s oil palm land in Jalan Sri Palas, Kecamatan Rumbai, Riau, using factorial randomized block design with 3 replications. The first factor: compost with 3 levels consist of without applying comp…