Record Details

Significance of soil modifiers (Ca-zeolites and gypsum) in naturally degraded Vertisols of the Peninsular India in redefining the sodic soils

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Significance of soil modifiers (Ca-zeolites and gypsum) in naturally degraded Vertisols of the Peninsular India in redefining the sodic soils
Not Available
 
Creator D.K. Pal , T. Bhattacharyya, S.K. Ray, P. Chandran, P. Srivastava, S.L. Durge, S.R. Bhuse
 
Subject Natural degradation, soil modifiers, sodicity criteria, soil classification, soil management
 
Description Not Available
Earlier hypothesis on the factors and processes of natural degradation in Vertisols and also their evaluation for crops on the basis of only hydraulic properties was developed on limited soils by the Division of Soil Resource Studies (DSRS) of the National Bureau of Soil Survey and Land Use Planning (NBSS & LUP), Nagpur, India. In order to validate the above similar soils occurring in major states of the Peninsular India and also to document the extent of modification by gypsum and Ca-zeolites therein, the present study on twenty-six benchmark Vertisols representing a climosequence from sub-humid moist to arid dry climate was undertaken. The results of the present study validates the hypothesis that formation of pedogenic calcium carbonate (PC) at the
expense of non-pedogenic calcium carbonate (NPC) is the prime chemical reaction for the natural chemical degradation realized in terms of impairment of hydraulic properties of soils mediated through the development of subsoil sodicity. Presence of gypsum and Ca-zeolites, on the other hand, prevented the rise of pH, decrease in Ca/Mg ratio of exchange sites and improved the hydraulic properties amidst an exchangeable sodium percentage (ESP) >15. The improvement in saturated hydraulic conductivity (sHC) (>10mm h−1) of zeolitic sodic soils does commensurate fairly well with the performance of rainy season crops. Thus
characterization of sodic soils in terms of sHC
Not Available
 
Date 2020-05-27T10:27:11Z
2020-05-27T10:27:11Z
2006-05-15
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/36458
 
Language English
 
Relation Not Available;
 
Publisher www.elsevier.com/locate/geoderma