The purpose of this research is to find out the interaction of TKKS liquid smoke application and trichocompost as well as finding the best concentration and dozage of chose on the growth of oil palm seedling (Elaeis guineensis Jacq.) at the main nursery. This research was carried out at the Agriculturural Faculty University of Riau Bina Widya Campus KM 12,5 Simpang Baru Tampan districk, Pekanba…