Special section: Soil physical quality of the Indo-Gangetic Plains and black soil region (original) (raw)

Abstract

Understanding the physical quality of soil that influ-ences its hydraulic behaviour helps in formulating appropriate water management strategies for sustain-able crop production. Saturated hydraulic conductivity (K s) is a key factor governing the hydraulic properties of soils. K s can be estimated through various techniques. In the present article we have developed and validated the regression models to predict K s of the soils of the Indo-Gangetic Plains (IGP) and the black soil regions (BSR) under different bioclimatic systems. While particle size distribution was found to be a key factor to predict K s of the BSR soils, organic carbon was found useful for the IGP soils. Moreover, the models for K s of both soils were strengthened by putting in CaCO 3 and exchangeable sodium percentage content. It seems there is ample scope to study the interaction process for revising K s to desired levels through management practices in these two important food-growing zones. An index of soil p...

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