Usaha Perbaikan Kesuburan Tanah Sawah Tradisional melalui Pemberian Biochar Sekam Padi di Nagari Tanjung Betung Kabupaten Pasaman

Ulfia, Fadilla (2016) Usaha Perbaikan Kesuburan Tanah Sawah Tradisional melalui Pemberian Biochar Sekam Padi di Nagari Tanjung Betung Kabupaten Pasaman. Diploma thesis, Universitas Andalas.

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Abstract

The study on the effect of improvement soil fertility with biochar husk in topsoil, nutrients transport and the rice production in traditional of paddy system soil was conducted. The experiment was carried out from June to December 2015, in Jorong Air Hangat Nagari Tanjung Betung, Rao Selatan, Pasaman District. The experiment was arranged in randomized completely design with 6 treatments and each treatment was replicated 3 times. The treatments were given some biochar husks from 0 ton/ha (control), 5 ton/ha, 10 tons/ha, 15 ton/ha, 20 ton/ha and 25 ton/ha. The soil and plant sampels were analized in the Laboratory of Soil Science, Faculty of Agriculture, University of Andalas Padang. Data was analized statistically with T test at 5% level. The results showed that biochar husk affect soil chemical properties. The dose of 25 ton/ha altered the chemical properties of the soil, at a depth of 0-10 cm C-organic of 23,30 g/kg; N-total of 3,23 g/kg; C/N ratio 7,21; P-available 12,04 mg/kg; and CEC 17,90 me/100 g. At a depth of 10-20 cm C-organic of 14,21 g/kg; N-total of 3,47 g/kg; C/N ratio of 4,09; P-available 12,04 mg/kg; and CEC 10,7 me/100 g. The addition of biochar 25 ton/ha affected nutrient transport of N 82,24 kg/ha; P 36,24 kg/ha; K 59,87 kg/ha and Si 9,46 kg/ha. Meanwhile production of paddy increase by 27% on treatment biochar. Key word : biochar husk , traditional paddy soil, soil fertility

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