This research aims to determine the interaction of giving cow biourine fertilizer and NPK fertilizer, the effect of giving cow biourine fertilizer and NPK fertilizer on the growth of oil palm seedlings (Elaeis guineensis Jacq.) in Main nursery and to get the best dose combination.This research was carried out at the Technological Islamic Boarding School Land, Kulim, Tenayan Raya District, Pekan…