Zonal Agricultural Research Station, Navile, Shimoga, UAS, Bangalore
Present address: 1Department of Environmental Science, Kuvempu University, Shankaraghatta, Shimoga, Karnataka
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] in the 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 use system, 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.
Soil reaction, lime potential, buffering capacity, cation exchange capacity, base saturation per cent, lime requirement, potassium fixation, phosphorus fixation, land use systems)
