Authors
Ch Srinivasarao, S Rama Gayatri, B Venkateswarlu, VS Jakkula, SP Wani, S Kundu, KL Sahrawat, BK Rajasekhara Rao, S Marimuthu, G Gopala Krishna
Publication date
2014/10
Journal
International Journal of Environmental Science and Technology
Volume
11
Pages
1959-1972
Publisher
Springer Berlin Heidelberg
Description
Heavy metals are governed by parent material of soils and influenced by the soil physicochemical properties and soil and crop management practices. This paper evaluates total heavy metal concentrations in rainfed soils under diverse management practices of tropical India. Vertisols (clayey soils with high shrink/swell capacity) had the highest concentrations of heavy metals. However, chromium (Cr) content was above the threshold value in Aridisol [calcium carbonate (CaCO3)]-containing soils of the arid environments with subsurface horizon development. Concentration increased at lower depths (>30 cm). Basaltic soils showed higher concentrations of nickel (Ni), copper (Cu) and manganese (Mn). Cadmium (Cd), cobalt (Co), Cu and Mn concentrations were higher in soils cultivated to cotton, whereas Cr concentration was above the threshold level of 110 mg kg−1 in food crop cultivated soils. As the …
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Scholar articles
C Srinivasarao, S Rama Gayatri, B Venkateswarlu… - International Journal of Environmental Science and …, 2014