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Mineralogy of Some Vertisols in Different Agro-ecological Regions of India

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Title Mineralogy of Some Vertisols in Different Agro-ecological Regions of India
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Creator Gurav, P. Priya, Ray, S.K., Chandran, P. and Biswas, A.K.
 
Subject Mineralogy, Some Vertisols, Agro-ecological Regions, India
 
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Vertisols have the capacity to swell and shrink, inducing cracks and forming distinctive soil structure and wedge-shaped aggregates. The formation of these specific features is caused by heavy texture, dominance of swelling type of clay and marked by high moisture holding capacity. In India they occur in different agro-ecological regions such as humid tropical (HT), sub-humid moist (SHM), sub-humid dry (SAD) and arid dry (AD) climate and thus represent an array of soils in a climosequence which vary in their properties.Therefore a study has been undertaken using benchmark Vertisols from from two different agro-ecological regions namely, Panjri soil series, Nagpur, (sub-humid dry) and Nimone soil series, Rahuri, Ahmednagar (arid dry) in Maharashtra. . Both the Vertisols are characterized by dark colour, angular to sub-angular blocky structure and clayey texture.
Sand fractions are composed of quartz, feldspars and anatase. The XRD analysis of these Benchmark Vertisols indicated that coarse clay fraction composed dominantly of smectite in addition to small amounts of chlorite, vermiculite and mica minerals. with traces of feldspars and quartz. Fine clay also contained predominantly smectite with little amounts of mica, vermiculite and kaolinite. Fine clay fractions (˂200 nm) consisted of higher amount of smectite mineral compared to the total clay fractions. The smectites in the fine clay fractions having higher surface area are more reactive owing to consisting of size fractions that are comparable to nano-particles (˂100 nm)
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Date 2020-06-27T01:32:26Z
2020-06-27T01:32:26Z
2017-02-17
 
Type Presentation
 
Identifier Gurav, P. Priya, Ray, S.K., Chandran, P. and Biswas, A.K. (2017) Mineralogy of Some Vertisols in Different Agro-ecological Regions of India. Paper presented at the 20th Annual Convention & the National Conference on “Harnessing Clay Science for Human Welfare”, Clay Minerals Society of India, New Delhi, 17-18 February, 2017, Nagpur, pp.45
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http://krishi.icar.gov.in/jspui/handle/123456789/37494
 
Language English
 
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