The purpose of this research is to determine to effect effluent and to get the best dosage for growth palm oil seedlings (Elaeis guneensis jacq) at main nursery. The research was conducted at the experiment fleld of the faculty of Agriculture, University of riau, Bina Widya Campus KM 12.5 Simpang Baru, Tampan district, Pekanbaru, with the height of 10 mdpl. The expriment was conducted for 4 mon…