UTILIZATION OF WASTE LIVING CUTTLE COW IN SUPPORTING CORN AGROINDUSTRY DEVELOPMENT.

Corn agroindustry still faces problems, especially the availability of fertilizer. The solution that can be taken is to integrate corn plants with beef cattle. Farmers use livestock manure as organic fertilizer for their crops, then utilize corn waste as animal feed. The purpose of this study is to engineer traditional/commercial beef cattle waste processing into compost. Research on compost using the anaerobic composting system with treatments T1, T2, C1 and C2 (4 kg of traditional/commercial beef cattle waste mixed with an EM4 solution with a concentration of 5 ml and 10 ml / l water). Compost material is stirred evenly, put in hollow polybags on a sealed plastic bucket, fermented for 40 days and reversed every 3 days. Ripe compost is dried in the hot sun while being flipped dry (no later than three days). Dry compost is finely ground (40-60 mesh), packaged and tested parameters include yield, water content (Oven), pH (Potentiometry), organic C (Gravimetric), total N-level (Volumetry), total P2O5 (Spectrophotometry), K2O (AAS), C/N ratio. The data obtained are presented descriptively. The results showed the performance of EM4 10 ml/l of water is better than 5 ml/l of water because it can accelerate the composting process. The C2 treatment produced compost with a yield of 21.91%, water content 10.07%, pH 8.98, P2O5 1.79%, K2O 1.54%, organic C 37.50%, N total 1.80% and C/N ratio 20.83 which are more in accordance with SNI quality standards.