Spectral reflectance characterisation of different soils of Deccan plateau

Spectral reflectance of different soil subgroups from different soil orders were measured using a field radiometer. The results showed that, on the basis of spectral signatures, different soils can be delineated. The physico-chemical characteristics including moisture content showed a definite bearing on the spectral reflectance. The plant cover, tillage and crop residue content influenced greatly spectral reflectance as compared to bare soil. The spectral reflectance on soil aggregate size showed that reflectance decreased with increase in the aggregate size. The saline and sodic soils also recorded greater spectral reflectance in relation to normal soils.