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Abstract
Composting was used 2 main sources of organic waste: dry leaves and vegetable waste which were collected in Nha Trang university campus. The ratio of vegetable waste to dry leaves in the compost was 1:0.52. Furthermore, the compost included 10kg Song Gianh organic fertilizer and 1kg Trichoderma fungi. It spent 2 months for the mixture of materials to decay in 200L rotary drum composter. This process made the product, which has no smell, was used as organic fertilizer for greenery in Nha Trang campus. Temperature and moisture of the compost were followed every day by the sensor. pH and total organic Cacbon were analyzed in the laboratory. pH of the compost was around 7.90-8.35 which was suitable for growth of organisms. Moisture still remained at 35%. The quality of composting was analyzed based on the Vietnam Circular 09/2019/TT-BNNPTNT. In addition, tests of the quality composting was done on Basella alba L. seeds and Ruellia brittoniana branches. The tests gave good results of plant physiology in which the ratio of composting to soil was 1:1.