The Role of Oil Palm Empty Fruit Bunches (OPEFB) Biochar to Increase the Growth of Broad Leaf Mahogany (Swietenia macrophylla) in Planting Media Containing Gold Tailings
DOI:
https://doi.org/10.70110/osse.v2i2.16Keywords:
Biochar, Gold, Mahogany, Mercury, Phytoremediation, Soil amendmentAbstract
ackground: Unlicensed gold mining (UGM) is an activity of individuals or groups of people/companies for mining businesses without government permits. UGM poses a serious threat to human life, as it can cause serious environmental pollution. This is because the waste generated, mainly in tailings, contains several toxic and hazardous substances. Given the dangers that can be caused, efforts are needed to reduce the concentration of toxins in the land and soil to avoid their availability in the food chain. The effort made is to use soil amendment in the form of biochar made from oil palm empty fruit bunches (OPEFB). OPEFB biochar is known to improve soil quality to accelerate plant growth.
Aims: This study aims to determine the effect of the various doses of OPEFB biochar on the growth of broad-leaf mahogany (Swietenia macrophylla) seedlings in planting media containing gold tailings.
Methods: The seedlings were planted for four months using a completely randomized design (CRD) with 15 treatments in the form of the application of several doses of biochar in planting media containing gold tailings. The combination ratios of biochar and gold tailings were made as follows (v/v): 0/0, 5/0, 15/0, 25/0, 35/0, 0/25, 5/25, 15/25, 25/25, 35/25, 0/50, 5/50, 15/50, 25/50, and 35/50. Each combination treatment was conducted through four replications. The parameters observed were plant height increase, stem diameter increase, leaf area, root length increase, and shoot-root ratio. The data were analyzed using analysis of variance (ANOVA) and least significant difference (LSD) test
Result: The results reveal that the application of OPEFB biochar at a dose of 25% in planting media containing tailings produced a very significant effect on the parameters of plant height, stem diameter, and root length.
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Copyright (c) 2024 Akbar Riskilillah, Machya Kartika Tsani, Afif Bintoro, Wahyu Hidayat, Melya Riniarti
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