Factors Affecting Productivity of Oil Palm (Elaeis guineensis Jacq.) at Various Afdelings in Bah Jambi Farm PT. Perkebunan Nusantara IV

North Sumatra Province, where the second-highest oil palm productivity in Indonesia, has successfully reached fresh fruit bunches (FFB) production of 5,775,631.82 tons 2016. However, level tends to be unstable and low. The purpose this study was identify analyze factors influencing at Bah Jambi Plantation PTPN IV, Simalungun Regency, Province. method used qualitative descriptive analysis by collecting secondary data research locations 4 Afdeling Kebun PT. Nusantara IV Plantation. results correlation regression showed that soil factor such as organic C, pH, cation exchange capacity availability N, P, K Mg is most dominant amount which have determination coefficient (R2) more than 90%. Meanwhile, climate evapotranspiration, duration light exposure, wind speed rainfall role a 95%, 94%, 88% 33%.