Perbaikan Sifat Kimia Lahan Bekas Tambang Emas Melalui Aplikasi Biochar Sekam Padi dan Pupuk Kandang Ayam

Improvement of Chemical Properties Ex-Gold Mine Land Through Application Rice Husk Biochar and Chicken Manure. Ex-gold mining land that have been degraded so soil fertility is very low. Mining with an open system causes increase in the oxidation sulfuric minerals which reduces nutrient levels, it necessary to make efforts nutrients through addition rice husk biochar manure. The purpose study was determine role manure improve chemical properties. This used a completely randomice design (CRD)with 6 treatments 4 replications. results showed 100% could fertility, when pH 6.28, total N 0.0072%, available P 59.74 ppm. best for organic C parameter combination 50% + manure, 1.42%. Based on research, matter can properties ex-gold land.