PRODUCTION OF COFFEE SKIN BOKASHI FERTILIZER WITH THE ADDITION OF COW AND GOAT MANURE, BANANA STALKS

Abstract

Fertilizer is a medium added to supply the necessary nutrients for plants. The raw materials for making fertilizer can come from various sources, one of which is coffee grounds waste. This study aims to determine the process of making bokashi fertilizer from coffee grounds waste with the addition of cow dung, goat dung, and banana stems. The research uses a Completely Randomized Design (CRD) method with 4 treatments and 6 replications, namely P1 (Pure Coffee Grounds Waste), P2 (Coffee Grounds Waste and Cow Dung), P3 (Coffee Grounds Waste and Goat Dung), and P4 (Coffee Grounds Waste and Banana Stems). The bokashi fertilizer fermentation process is carried out for 21 days. The observed parameters are temperature, pH, color, smell/aroma, texture, NPK content, organic C, C/N ratio, and moisture content. The data is presented descriptively. The macro-nutrients of all treatments meet the minimum technical requirements for solid organic fertilizer quality according to the Kepmentan Number 2019261/KPTS/SR.310/M/4/2019 concerning the minimum technical requirements for organic fertilizers, biological fertilizers, and soil conditioners. The highest macronutrient content is found in the bokashi fertilizer treatment from coffee grounds waste with the addition of cow dung (P2). However, the C/N ratio in treatments P1 and P4 does not meet the National Indonesian Standard (SNI) requirements. The moisture content of the bokashi fertilizer from coffee grounds waste also does not meet the SNI standards for all treatments