| Penulis/Author |
Viagian Pastawan, S.Pt., M.Sc., Ph.D. (1) ; Prof. Dr. Ir. Endang Baliarti, SU. (2); Ir. Hamdani Maulana, S.Pt., M.Sc., IPP (3); Prof. Ir. Nanung Agus Fitriyanto, S.Pt., M.Sc., Ph.D., IPM (4) |
| Abstrak/Abstract |
The study aims to know the effect of different starters on the quality production of organic fertilizer. Three kinds of starters; EM-4 (P1), BM-4 (P2), and Petroganic (P3), were used in this study. The quality of organic fertilizer with the addition of starter for 28th days of composting was evaluated by physical, and chemical parameters in triplicates. Based on the results, we showed the physical parameters of treatment compost P1, P2, and P3 are blackish brown, didn’t smell of stool, and are crumbly textured. The chemical parameters showed the content of C-organic from the treatments was 42.51%, 39.19%, and 35.74% respectively at the end of the composting process, while nitrogen total content was 4.71%, 9.47%, and 5.77%. The C/N ratio of each treatment P1, P2, and P3 was 9.02, 4.17, and 6.20, while the phosphor total content was 0.092%, 0.15%, and 0.13%, respectively. Next, the potassium total content was 0.69%, 0.79%, and 0.77% respectively at the end of the composting process. The addition of different types of starters did not have an effect on physical, and chemical quality. In conclusion, EM-4, BM-4, and Petroganik as a starter can be used as alternative starters in producing organic fertilizer. |
