Investigations on Some Physical Properties of Alluvial Soils of Utta Pradesh Related to Conservation and Management

Five genetic soil types of Unao district forming the toposequence order, Ganga lowlands, Ganga flatlands, Ganga uplands, Central lowlands and saline alkali soils were studied. Detailed morphological characteristics, mechanical composition, bulk density, particle density, total porosity, non-capillary porosity, hydraulic conductivity, intrinsic permeability to water, infiltration rate and available moisture capacity of these soils have been reported. The usefulness of these data in soil conservation planning and management has been indicated. Several correlation coefficients and regression equations have been worked out expressing the relationship among the different physical characteristics of the soils studitd. It has been concluded that the prediction of hydraulic conductivity, volume of non-capillary pores and available moisture capacity of the soils from the values of silt and clay (<20μ fraction) can serve as good diagnostic techniques for soil conservation planning and management.