Division of Soil Science and Agricultural Chemistry, Indian Agricultural Research Institute, New Delhi
*Present address: Central Soil Salinity Research Institute, Regional Station, Canning Town, West Bengal
Three lime requirement methods were evaluated for their suitability for typical acid soils (pH 4.9 to 5.5) using rice, arhar (pigeon pea) and wheat as test crops. The results on yield and nutrient composition in respect of both direct effect on rice and arhar and residual effect on wheat showed clearly that lime requirement based on exchange acidity as per procedure given by Lin and Coleman with a lime factor of 1 to 2 was the most suitable one while the other methods tried very much over-estimated the lime requirement and were not applicable for moderately acid soils of low cation exchange capacity.
Acid soils, lime requirement methods
