Abstract: Inceptisols is quite wide in Indonesia but is not always a fertile soil and have enough organic
matter content for agricultural production. Inceptisols fertility can be improve with organic
fertilizers such as oil palm empty fruit bunch (EFB) compost accompanied with inorganic
fertilizers. Oil palm EFB compost enriched with PGPR microbes is expected to reduce the use of
inorganic fertilizers on pakcoy plants. The treatments of experiment were a of oil palm EFB
compost 10 ton ha-1 and without EFB aplication combined with 50, 75, and 100% doses of
inorganic fertilizers. Randomized block design was used with repeated 4 times in plot
experiment on the Inceptisols soil. The results showed that oil palm EFB compost treatment
which was enriched with PGPR bacteria, can increase the population of beneficial bacteria in
soil, growth and yield of pakcoy. Application 10 ton ha-1 of oil palm EFB compost combined
with an inorganic fertilizer of 75% from recommended dose have a high fresh weight of pakcoy
plants i.e 287.77 g/plant or 6.64 kg/plot |