ChayatiZahrotul (2016) Pemanfaatan Fly Ash Pada Pertumbuhan Vegetatif Tanaman Kedelai (Glycine Max (L.) Merril) Dan Perubahan Sifat Kimia Tanah Timbunan Bekas Tambang Batubara. Sarjana thesis, Universitas Brawijaya.
Abstract
Tingginya kebutuhan terhadap energi batubara menyebabkan melimpahnya limbah fly ash dan bottom ash dari hasil pembakaran boiler batubara serta lahan bekas tambang yang membentang. Tahun 2005 Indonesia menduduki peringkat ke-2 sebagai Negara pengekspor batubara uap (Gautama, 2007). Kandungan logam didalam fly ash jika dibiarkan dapat menimbulkan pelindian (leaching) yang akan mencemari tanah dan air yang kemungkinan besar akan terakumulasi di dalam organ-organ vegetative maupun generatif tanaman (Sharma and Kalra, 2006). Upaya pemanfaatan fly ash dapat dilakukan dengan penambahan bahan organik. Proses dekomposisi bahan organic akan menyebabkan reksiantara kation logam dan bahan-bahan organik yang disebut dengan pengkhelatan, sehingga jumlah logam akan berkurang (Hardjowigeno, 1995). Oleh karena itu penelitian ini dilakukan untuk mengetahui kombinasi penambahan fly ash dan bahan organik terhadap pertumbuhan vegetatif tanaman kedelai dan sifat kimia tanah. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian fly ash batubara dan bokashi terhadap pertumbuhan vegetatif tanaman kedelai dan perubahan sifat kimia tanah timbunan bekas tambang batubara. Penelitian dilakukan pada bulan November 2015 - Maret 2016 di Greenhouse kantor pembibitan PT. Bukit Asam, Tanjung Enim, Palembang dan kemudian dilakukan analisis kimia tanah di Laboratorium Kimia, Jurusan Tanah, Fakultas Pertanian, Universitas Brawijaya. Contoh tanah diambil pada Lokasi Timbunan Tupak, Tambang Air Laya (TAL) PT. Bukit Asam. Bahan yang digunakan adalah fly ash batubara dan bokashi yang berasal dari lokasi penelitian serta benih kedelai varietas Wilis yang diperoleh dari Balitkabi Malang. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL) dengan 6 Perlakuan dan 3 kali ulangan. Variabel pengamatan yang diamati berupa pertumbuhan tanaman (tinggi tanaman, jumlah daun, waktu berbunga) dan sifat kimia tanah (pH tanah, C-organik, N-total, P-tersedia, Fe-tersedia, Al-dd). Penelitian dilakukan pada skala polybag dengan dosis perlakuan terdiri dari kombinasi aplikasi bokashi 0 dan 10 ton ha-1, fly ash 0, 10, 20 ton ha-1. Dari hasil penelitian diperoleh bahwa perlakuan berpengaruh terhadap waktu muncul bunga. Perlakuan bokashi 10 ton ha-1 + fly ash 20 ton ha-1 memberikan waktu muncul tercepat. Hasil analisis ragam pada sifat kimia tanah berbeda nyata terhadap perlakuan bokashi 10 ton ha-1+ fly ash 20 ton ha-1 pada analisa C-organik dan P-tersedia serta perlakuan terbaik dalam peningkatan N-total dari 0,13% menjadi 0,23% meskipun tidak signifikan dengan perlakuan yang lain. Perlakuan bokashi 10 ton ha-1+ fly ash 10 ton ha-1 memberikan peningkatan pH tertinggi dari 4,40 menjadi 5,53. Perlakuan kontrol memberikan nilai Fe-tersedia yang lebih tinggi 10,18 ppm dari 7,56 ppm.
English Abstract
Metal content in fly ash can lead to leaching which will contaminate the soil and water that are likely to accumulate in the organs of vegetative and generative plant (Sharma and Kalra, 2006). The high demand for energy caused the abundance of waste coal fly ash and bottom ash from burning coal boiler and mined lands that stretch. In 2005 Indonesia was ranked second as a country exporting steam coal (Gautama, 2007). Metal content in fly ash can lead to leaching which will contaminate the soil and water that are likely to accumulate in the organs of vegetative and generative plant (Sharma and Kalra, 2006). Efforts utilization of fly ash can usefull with the addition of organic matter. The process of decomposition of organic materials because a reaction between metal cations and organic materials called chelation, so that the amount of metal will be reduced (Hardjowigeno, 1995). Therefore, this study was conducted to determine the combination of the addition of fly ash and organic material to the vegetative growth of soybean plants and soil chemical properties. This research was aimed to determine the effect of coal fly ash and bokashi to the vegetative growth of soybean plants and changes in the chemical properties of the soil embankment former coal mine. The research was conducted in November 2015 - Maret 2016 in the Greenhouse nursery office PT. Bukit Asam, Tanjung Enim, Palembang and the performed soil chemical analysis in the chemical laboratory, Department of Lands, Faculty of agriculture, University of Brawijaya. Soil samples taken on location Heaps Tupak, Tambang Air Laya (TAL) PT. Bukit Asam. Materials used are coal fly ash and bokashi derived from research sites and soybean seed varieties Wilis obtained from Balitkabi Malang. The research used a completely randomized design (CRD) with 6 treatments and 3 repetitions. Variable observations were observed in the form of plant growth (plant height, leaf number, flowering time) and chemical properties of the soil (soil pH, organic carbon, total-N, P-available, Fe- available, Al-dd). The research was conducted on a scale polybag with a treatment consisting of a combination of applications 0 ton ha-1 and 10 ton ha-1, fly ash 0, 10, 20 ton ha-1. The result showed the treatment effect on time to appear flowers. Treatment bokashi 10 ton ha-1+ fly ash 20 ton ha-1 provides a fastest emerging. Results of ANOVA on soil chemical properties significantly different to the treatment 10 ton ha-1+ fly ash 20 ton ha-1 on the analysis of organic C and P-available and the best treatment in the increase of total-N of 0,13% to 0,23% altough not significant with other treatments. Treatment bokashi 10 ton ha-1+ fly ash 10 ton ha-1 provides the highest pH increase of 4,40 becomes 5,53. Control treatment giving highest value Fe-available 10,18 ppm of the initial value 7,56 ppm.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FP/2016/682/051609369 |
| Subjects: | 500 Natural sciences and mathematics > 551 Geology, hydrology, meteorology |
| Divisions: | Fakultas Pertanian > Ilmu Tanah |
| Depositing User: | Sugiantoro |
| Date Deposited: | 04 Nov 2016 14:10 |
| Last Modified: | 19 Oct 2021 15:22 |
| URI: | http://repository.ub.ac.id/id/eprint/131691 |
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