Jurnal ilmiah PEMANFAATAN BIOCHAR SEKAM DAN KOMPOS JERAMI PADI TERHADAP PERTUMBUHAN DAN PRODUKSI PADI (Oryza sativa) PADA TANAH ORDO ULTISOL
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A study of the effects of rice husk biochar and rice straw composted on growth and production rice (Oryza sativa) and (2) to determine the ability of rice husk biochar and rice straw compost in providing nutrients to Ultisol. The research was carried out February – July 2018 in Sungai Abang Village, Lubuk Alung Regency, Padang Pariaman. Research applied Random Design Group with 5 treatments: 0% Rice husk biochar + 0% Rice straw compost, 100% Rice husk biochar + 0% Rice straw compost, 75% Rice husk biochar + 25% Rice straw compost, 50% Biochar rice husk + 50% Rice straw compost and 25% Rice husk biochar + 75% Rice straw compost. Observations have been made on soil and crops including initial soil analysis ie before treatment was given, soil analysis after incubation, and final soil analysis (pH, N-total, P-available, K-dd, Ca-dd, Mg-dd and Sulfur ) and plant observations include plant height, the productive of a tiller, the total tiller and weight of grain per hectare. Rice husk biochar + 25% rice husk biochar + 25% rice straw rice husk biochar with and the production of rice plants as much as 8,238 tons / ha and (2) the use of rice husk biochar and rice straw compost to provide nutrients in Ultisol indicated by increasing pH, N, P, K, Ca, Mg and S.