ICAR Research Data Repository for Knowledge Management
Comparative evaluation of biological and chemical methods to determine nitrogen mineralisation coefficient of tropical rice soils.
OAR@ICRISAT
View Archive Info| Field | Value | |
| Relation |
http://oar.icrisat.org/4578/
http://indianjournals.com/ijor.aspx?target=ijor:oryza&type=home |
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| Title |
Comparative evaluation of biological and chemical methods to determine nitrogen mineralisation coefficient of tropical rice soils.
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| Creator |
Sahrawat, K L
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| Subject |
Soil Science
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| Description |
Two anaerobic incubation methods (30°C for 2 weeks; 40°C for 1 week) and five chemical methods, based on ammonium released by the action of hydrogen peroxide (H2O2), alkaline permanganate, acid permanganate, acid dichromate, and dilute sulphuric acid, were used to determine nitrogen mineralization coefficient (fraction of total nitrogen released as mineral N) of 39 Philippine rice soils with a wide range of organic C, total N, and other properties. Hydrogen peroxide oxidation method gave the highest average nitrogen mineralization coefficient (26.9%) and acid dichromate extraction the least (2.9%). Anaerobic incubation methods gave average nitrogen mineralization coefficients of 4.2 (30°C, 2 weeks) and 5.1% (40°C, 1 week), resp.
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| Publisher |
Association of Rice Research Workers
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| Date |
1989
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Language |
en
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| Rights |
—
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| Identifier |
http://oar.icrisat.org/4578/1/Oryza_%281989_%29_26%2C_273%C2%B7-276.pdf
Sahrawat, K L (1989) Comparative evaluation of biological and chemical methods to determine nitrogen mineralisation coefficient of tropical rice soils. ORYZA-An International Journal on Rice, 26 (3). pp. 273-276. ISSN 0474-7615 |
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