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http://krishi.icar.gov.in/jspui/handle/123456789/43661
Title: | Role of Clay and Cation Exchange Capacity in Water Retention Characteristics of Indian SAT Vertisols |
Other Titles: | Not Available |
Authors: | Tiwary, P., Karthikeyan, K., Ray, S.K., Chandran, P., Prasad, J., Bhattacharyya, T., Sarkar, Dipak and Pal, D.K. |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR::National Bureau of Soil Survey and Land Use Planning |
Published/ Complete Date: | 2013-09-27 |
Project Code: | Not Available |
Keywords: | Clay, Cation Exchange Capacity, Water Retention, SAT Vertisols |
Publisher: | Not Available |
Citation: | Tiwary, P., Karthikeyan, K., Ray, S.K., Chandran, P., Prasad, J., Bhattacharyya, T., Sarkar, Dipak and Pal, D.K. (2013) Role of Clay and Cation Exchange Capacity in Water Retention Characteristics of Indian SAT Vertisols. Paper presented at the Annual Convention and National Symposium of the Clay Mineral Society of India on “Application of clay Science in agriculture, environment and Industry, 27-28 September, 2013, New Delhi, pp. 34. |
Series/Report no.: | Not Available; |
Abstract/Description: | In semi-arid region of India, availability of soil moisture is crucial for agricultural production under rainfed condition. Moreover, the availability of soil moisture depends on the soil water retention-release behaviour of the soils, which is influenced by the soil physical-chemical properties. The clay with its very large adsorption surface and cation exchange capacity (CEC), which reflects the negative charge of clays, greatly affect the water retention characteristics. In the present study, an attempt has been made to relate the water retention characteristics with clay content, CEC and some other soil properties using step-wise regression technique in SPSS. Soil physical and chemical properties of 14 benchmark soil series representing semi-arid tropics of India, were collected. Regression models were developed for water retention at 33, 100, 300, 5000, 800, 1000 and 1500 kPa. The contribution of each predictor was estimated from standardized coefficients (Beta coefficients) and standard deviations. CEC contributes more than 50% in predicting the water retention at various suctions followed by clay content (25-30%) and exchangeable sodium percentage (ESP) (9-15%). Thus, CEC and clay content are the important soil properties influencing the water retention characteristics in the soils of semi-arid tropics of India. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Presentation |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Not Available |
Volume No.: | Not Available |
Page Number: | Not Available |
Name of the Division/Regional Station: | Nagpur |
Source, DOI or any other URL: | Not Available |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/43661 |
Appears in Collections: | NRM-NBSSLUP-Publication |
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