Abstract

The lime requirement of fourteen acid soils from Orissa as determined by calcium carbonate incubation method showed significant correlation with pH, product of increase in pH value due to liming and the organic matter content, clay content, exchangeable aluminium and exchange acidity but not with organic matter content or cation exchange capacity. Four lime requirement (LR) methods were evaluated regarding their suitability to these soils. Except Peech's method, the lime requirement as determined by the laboratory methods showed highly significant correlation with that obtained by CaCO, incubation. The New Woodruff did slightly better than Woodruff and SMP in estimating lime requirement and hence the New Woodruff may be recommended for adoption in routine soil testing work.

Keywords: Lime requirement, Lateritic soils