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http://krishi.icar.gov.in/jspui/handle/123456789/35599| Title: | Urease Activity and Its Kinetics in Selected Benchmark Soils of Indo-Gangetic Plains, India |
| Other Titles: | Not Available |
| Authors: | Ashutosh Kumar, Alok K. Srivastava, Kulandaivelu Velmourougane, Gurjant Singh Sidhu, S.K. Mahapatra, R.S. Singh, A.K. Sahoo, K. Das, T.H. Das, S.K. Reza, T. Bhattacharyya, D. Sarkar, A.K. Sharma |
| ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
| Author's Affiliated institute: | ICAR::National Bureau of Agriculturally Important Micro-organisms ICAR::Central Institute of Cotton Research ICAR::National Bureau of Soil Survey and Land Use Planning |
| Published/ Complete Date: | 2015-04-01 |
| Project Code: | Not Available |
| Keywords: | Soil urease, Enzyme kinetics, Benchmark soils, Soil depth |
| Publisher: | Springer |
| Citation: | Not Available |
| Series/Report no.: | Not Available; |
| Abstract/Description: | A study was undertaken in the established benchmark (BM) soil series in different agro-ecological subregions of Indo-Gangetic Plains (IGPs), India with an objective to assess the urease activity and its kinetics at different soil depths. The urease activity declined with increase in soil depth in all the selectedBMsoils of IGP. The mean urea hydrolysis in the surface horizon (0–30 cm; 8.2 lg NHþ4 /h) was 2.6-folds higher than the sub-surface horizon (121–150 cm; 7.01 lg NHþ4 /h). The enzyme velocity (Vmax) and enzyme efficiency (Km/Vmax) of urease hydrolysis were at par in surface and sub-surface horizons. The average Km value of urease enzyme in surface and subsurface horizons were 4.53 and 3.96 mM, respectively. The coefficient of variation, Km for surface horizons showed higher variability and low affinity of soil urease towards substrate urea than the sub-surface horizon. Negative Pearson’s correlation coefficient was recorded between urease activity and soil depth (R = -0.86), while significant positive correlation was observed between urease activity with organic carbon (R = 0.81) and nitrogen (R = 0.81). |
| Description: | Not Available |
| ISSN: | Not Available |
| Type(s) of content: | Article |
| Sponsors: | Not Available |
| Language: | English |
| Name of Journal: | Proceedings of the National Academy of Sciences India Section B: Biological Sci. |
| Volume No.: | 85(2) |
| Page Number: | 407-413 |
| Name of the Division/Regional Station: | Not Available |
| Source, DOI or any other URL: | DOI 10.1007/s40011-014-0352-5 |
| URI: | http://krishi.icar.gov.in/jspui/handle/123456789/35599 |
| Appears in Collections: | NRM-NBSSLUP-Publication |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Proceedings of the National Academy of Science-Biological Science-2015-Urease Activity and Its Kinetics in Selected Benchmark Soils.pdf | 657.82 kB | Adobe PDF | View/Open |
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