Utilization of Wet Grass Waste on Campus as Compost complying with Standards of Macro Nutrients

The results of routine grass cutting on campus can be used as raw material for compost. The aim of this research was to make compost from wet grass in the campus and to evaluate the quality of the resulting compost based on applicable standards. This research consisted of 3 stages, namely: preparation (making a compost house as a place to ferment wet grass into compost); implementation (growing bacteria by adding EM4 and molasses so that the fermentation process occurs) and evaluation (measuring the quality of the compost based on standards). The research results showed that after the compost house was built, fermentation was carried out with strict monitoring every 3 days for 3 weeks for temperature, humidity and pH. Furthermore, the results of the compost quality evaluation showed the macro nutrients N+P2O5+K2O = 5.08% (quality standard: >4%), C-organic = 26.56% (quality standard: >15%) and C/N = 18.97 (quality standard = 15-25). Furthermore, it was concluded that the macro nutrients had met the compost quality standards according to the Regulation of the Minister of Agriculture of the Republic of Indonesia Number 261/KPTS/SR.310/M/4/2019 of 2019 concerning minimum technical requirements for organic fertilizers, biological fertilizers and soil improvement.