The effect of compost on the growth of forest plants in the gold mine tailings of PT. Kasongan Bumi Kencana, Central Kalimantan, Indonesia Patricia Erosa Putir1, Wahyudi2, Sih Winarti2, Sosilawaty2
1)Graduate Program of Environmental Science, Postgraduate Program, University of
Palangka Raya. Indonesia, 73112
2)Faculty of Agriculture, University of Palangka Raya, Palangka Raya, Indonesia,
73112.
1 patricia[at]for.upr.ac.id- 2 wahyudi888[at]for.upr.ac.id- 2 sihwinarti[at]pasca.upr.ac.id- 2 sosilawaty[at]for.upr.ac.id
Abstract
Mining activities is consequence of development which will result in ex-mining land, causes of environmental changes include chemical, physical and biological. Physically, the land is damaged, the top soil layer become sand, gravel and granite. Chemically, land not longer provide nutrients for plant growth. Biologically, the less of microorganisms especially decomposers. Revegetation is an effort to improve mine land to increase biodiversity, restore landscape aesthetics, control erosion and runoff. The aims of this study to determine the potential growth of Shorea balangeran, Combertocarpus rotundatus, Melaleuca cajuputi and Alstonia scholaris by applying compost to a gold mine^s Tailing Storage Facility (TSF)- 15 year (Mirah I) and 1 year (Mirah II). The results of the study on TSF Mirah I, the percentage of 100% growth was M. cajuputi and A. scholaris, the highest average height and diameter was M. Cajuputi (MeanH+SD) 166.70 + 32.16 cm and (MeanD+SD) 1.35 + 0.62 cm. The TSF Mirah II, the percentage of 100% growth was S. balangeran and A. scholaris, the highest average height was M. cajuputi (MeanH+SD) 137.30 + 23.43 cm and the highest average diameter was A. scholaris (MeanD+SD) 1.23 + 0.38 cm.
