Pengaruh Biochar Serbuk Kayu Durian Terhadap Karakteristik Tanah Sulfat Masam Dalam Mengurangi Emisi Gas Metana

Abstract

Organic matter in the soil can provide nutrients to plants. The objectives of this study were to analyze soil characteristics after incubation using biochar at various doses, and to calculate the reduction of methane gas emissions from incubated soils. The treatments were (1) soil control (T0);(2) 4 t ha -1 biochar + soil (T1); (3) 8 t ha -1 biochar + soil (T2); (4) 12 t ha -1 biochar + soil (T3); (5) 16 t ha -1 biochar + soil (T4); (6) 20 t ha -1 biochar + soil (T5). The soil of each treatment was incubated for 30, 60, and 90 days. Observations were made on pH, exchangeable cations (Ca, Mg, K, Na) and cation exchange capacity (CEC). Methane gas emissions were measured at 30, 60, and 90 days after planting. The percentage increase in incubation soil pH for 30 days was 3.13-48.71%, 60 days was 3.06-21.26%, and 90 days was 0.41-28.26%. CEC also increased from 28.83 to 37.46 me 100 g -1 (29.95%) at 30 days, 27.63-36.16 me 100 g -1 (30.86%) at 60 days, and 26.07-35.01 me 100 g -1 (34.28%) at 90 days. Exchangeable Ca, and Mg was not significantly different for all biochar doses and incubation times. The reduction in methane gas emissions ranged from 9.57-18.08% (30 days); 33.13-35.23% (60 days); and 46.08-73.25% (90 days).

Use of Humic and Silica Materials as Soil Ameliorant to Improve the Chemical Properties of Acid Sulphate Soil

“…The role of organic acids both from water hyacinth compost (H1) and from manufactured humic (H2) is to maintain a reductive atmosphere and can chelate metals such as Fe 3+ [41]. Research of [42], showed that adding organic matter (4,8,12,16, and 20 tons/ha) and an incubation time of 30 days could suppress pyrite oxidation and increase soil pH from 3.73 to 5.38. The Addition of organic matter can suppress the occurrence of pyrite oxidation caused by Fe 3+ ions by reducing the rate of Fe 3+ production in the Fe 3+ reduction process to Fe 2+ and increasing oxygen consumption by decomposer microorganisms and can cover the pyrite layer so that it does not come into direct contact with oxygen [43].…”

Pengaruh Penambahan Biochar Cangkang Sawit Dengan Variasi Suhu Pirolisis Terhadap Emisi Co2 Dari Top Soil

“…Menurut penelitian Setiawati et al (2019), penurunan pH dapat terjadi seiring dengan peningkatan waktu inkubasi. Kemudian pada hari ke-10 hingga ke-25, pH tanah tidak mengalami perubahan.…”