The effect of biofertilizer, chicken manure and dolomite on chemical soil and the growth of soybean at potential acid sulphate soils

The combination of Biotara bio fertilizer and dolomite is known to improve the potential acid sulphate soil fertility. This research has been carried out examine effect as fertilizer, chicken manure, on several chemical properties soybean growth in from May 2018 January 2019 at greenhouse Agricultural Faculty, Universitas Sumatera Utara Medan. using factorial randomized block design with 2 (two) factors 3 (three) replications analysed ANOVA. first factor biofertilizer consist such P0 (without biofertilizer), P1 (50 kg/Ha), P2 kg/Ha 1 ton/Ha manure). second dolomite, K0 dolomite), K1 (2 ton/Ha), K2 (4 ton/Ha). results showed that kg/Ha) manure (1 ton/Ha) can increase pH, organic carbon, total-N, available phosphate, height dry weight crop, N P uptake soybean. Interaction between best yield total-N height, weight,