Main Article Content
Abstract
Characteristics of the most prominent former coal mining land are severe damaged land, causing decreased soil productivity, erosion and sedimentation, soil movement and resulting in land slides, and soil compaction so that it is difficult to process. Efforts to improve the physical properties of coal mining reclamation soils, namely by adding biochar and compost. Biochar and compost can improve the physical properties of the soil by increasing the content of organic matter, total pore space, water content and reducing the weight of soil volume. This study uses a complete random design with 6 treatments and 4 replications. The treatment used in this study is B0 without treatment (control); B1 15 tons/ha biochar oil palm shells; B2 10 tons/ha biochar oil palm shells and 5 tons/ha of city waste compost; B3 7.5 tons/ha biochar oil palm shells and 7.5 tons/ha of city waste compost; B4 5 tons/ha Biochar palm oil shell and 10 tons/ha of city waste compost; B5 15 tons/ha of city waste compost. The observed variables are the content of organic matter, the weight of soil volume, total pore space, soil water content in several PF values, plant height, plant yields and the number of plant pods. The results obtained that the treatment combination of 7.5 tons/ha of biochar oil palm shells 7.5 tons/ha of city waste compost is the best composition to improve the groundwater content of coal mining reclamation. Furthermore, the provision of 15 tons/ha of city waste compost has effectively improved soybean yield.
Keywords : biochar, compost, some physical properties, coal, soybeans
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References
Anwar, S., D. Tjahyandari, K. Idris. 2016. Dasar-dasar Ilmu Tanah. Ed.2. Universitas Terbuka, Tanggerang . 334 hal.
Endriani. 2010. Sifat Fisika dan Kadar Air Tanah Akibat Penerapan Olah Tanah Konservasi. J. Hidrolitan. 1(1): 26-34.
Hardjowigeno S. 2010. Ilmu Tanah. CV Akademika Pressindu, Jakarta. 97 Hal
Hasibuan A.S.Z. 2015. Pemanfaatan Bahan Organik dalam Perbaikan Beberapa Sifat Tanah Pasir Pantai Selatan Kulon Progo. Planta Tropika Journal of Agro Acience (3): 31-40.
Intara Y L, A. Sapei, N. Sembiring dan M.B. Djoefrie. 2011. Pemberian Bahan Organik pada Tanah Lempung dan Lempung Berliat Terhadap Kemampuan Mengikat Air. Jurnal Ilmu Pertanian Indonesia. 16 (2):130-135
Murtilaksono, K dan E. D. Wahyuni. 2004. Hubungan Ketersediaan Air Tanah dan Sifat-Sifat Dasar Fisika Tanah. Jurnal Tanah dan Lingkungan 6(2): 46-50
Nurida NL dan Undang K. 2009. Perubahan Agregat Tanah pada Ultisol Jasinga Terdegradasi Akibat Pengolahan Tanah dan Pemberian Bahan Organik. Jurnal Tanah dan Iklim No. 30
Sandrawati, A., E.T. Sofyan, & O. Mulyani. 2007. Pengaruh kompos sampah kota dan pupuk kandang sapi terhadap sifat kimia tanah dan hasil tanaman jagung manis (Zea mays saccharata) pada Fluventic Eutrudepts asal Jatinagor Kabupaten Sumedang. Laporan Penelitian Dasar (LITSAR). Universitas Padjadjaran.
Soemarno, M.S. 2004. Manajemen Sumberdaya Air dan Pengelolaan Air Tanah Bagi Tanaman, Program Pascasarjana Universitas Brawijaya, Malang.
Subowo, G. 2011. Penambangan sistem terbuka ramah lingkungan dan upaya reklamasi pasca tambang untuk memperbaiki kualitas sumberdaya lahan dan hayati tanah. Jurnal Sumberdaya Lahan. 5(2):83–94. ISSN 1907-0799. Balai Penelitian Tanah Bogor.
Sujana P dan Nyoman L 2015. Pengelolaan Tanah Ultisol Dengan Pemberian Pembenah Organik Biochar Menuju Pertanian Berkelanjutan. Agrimeta : Jurnal Pertanian Berbasis Keseimbangan Ekosistem. 5(9): 01-09.
Wiskandar. 2017. Pengaruh Abu Terbang Batubara dan Pupuk Kandang Terhadap Produktivitas Lahan Bekas Tambang Batubara. Disertasi. Universitas Andalas.