Pengaruh Pemberian Asam Hutam Dari Limbah Batu Bara Terhadap Pertumbuhan Bibit Sengon Solomon (Falcataria Falcata (L.)) Di Persemaian PT. Suprabari Mapaindo Mineral
Annastasya Khasifa Putri, Ahdiar Fikri Maulana, S.Hut., M.Agr., Ph.D.
2026 | Tugas Akhir | D4 PENGELOLAAN HUTAN
Post-mining land reclamation is often hindered by the poor quality of soil and growing media. This study aimed to determine the effect of applying humic acid derived from coal waste on the growth of Solomon Sengon (F. falcata) seedlings. The research employed a systematic design method comprising six treatments. Testing was conducted on two types of growing media topsoil and overburden to compare the effects of applying innovative humic acid derived from coal waste, a commercial product (Humagold), and a control (no treatment). The results showed that the application of the innovative humic acid had a highly significant effect on height growth (p = 0.00043) and diameter growth (p = 0.000009). Treatment P1 (topsoil medium + innovative humic acid from coal waste) yielded the best height and diameter growth. Treating topsoil with the innovative humic acid resulted in optimal growth performance and significantly improved the medium's pH level toward neutrality. Application on overburden media also enhanced plant response compared to the control, although it did not yet produce significant differences in leaf count and biomass parameters, likely due to the relatively short observation period.
Kata Kunci : Limbah, Batu Bara, Asam Humat, Reklamasi, Pertumbuhan, Sengon