Effect of Decomposer Agent on C/N Ratio, N and P Content of Empty Palm Oil Bunches Palm (Elaeis Guenensis Jaq)

Abstract

This research aims to determine the effect of decomposer agents (EM-4 and Herbafarm) on the C/N ratio, as well as the N and P nutrient content of empty oil palm bunches. This research was carried out starting from July 2022 at the Indragiri Islamic University Campus, Jalan Provincial Trench 1, Tembilahan Hulu District, In Dragiri Hilir Regency, Riau Province. Raw material analysis was carried out at the Soil Analysis Laboratory, Faculty of Agriculture, UNAND. The aim of this research was to see the effect of giving several decomposer agents on the C/N ratio and N and P nutrient content of oil palm empty husk compost (JKKS) and obtain agent doses. the best decomposer for the quality of oil palm empty husk compost (JKKS). This research was carried out using a completely randomized design (CRD) with 7 treatments and 3 replications to obtain 21 experimental units. The experiments to be carried out are as follows: 1). Without Decomposer. 2), EM-4 concentration 0.1%, 3). EM-4 Concentration 0.2 %, 4), EM-4 Concentration 0.3 %, 5). Herbafarm concentration 0.1%, 6). Herbafarm concentration 0.2%, and 7). Herbafarm concentration 0.3%. The observations made were analyzing the nutrients C, N, and P and looking for the C/N ratio of JKKS compost. The research results showed that treatment with decomposer agents (EM-4 and Herbafarm) from a concentration of 0.1% to a concentration of 0.3% was able to increase the quality of JKKS compost compared to treatment without decomposer. The best (optimal) treatment results were in the EM-4 treatment with a concentration of 0.2% and in the Herbafarm treatment with a concentration of 0.3%.