Chemical Properties of Soils under Different Land Use Systems in Shimoga District of Karnataka

摘要

Studies on chemical properties of soils under different land use systems indicated that both the soil reaction and lime potential (3.6 and 3.0, respectively) were the lowest, while the exchangeable aluminium was the highest [0.27 cmol(p~+)kg~(-1)] inthe soil under tobacco land use system. Soil under mixed forest land use system recorded the highest total potential acidity [18.7 cmol(p~+)kg~(1)] and buffering capacity [0.76 cmol(p~+)kg~(-1)]. In the upper solum of the soil under mixed forest land usesystem, cation exchange capacity was the highest [48.5 cmol(p~+)kg~(-1)] while the base saturation was the lowest [25.8 cmol(p~+)kg~(-1)] and reverse was true in the upper solum of the soils under cultivated land use systems. Soil under mixed forest land use system recorded higher fixation of both potassium and phosphorus than the soils under cultivated land use systems.