Mineralization of Soil Organic Nitrogen Under Waterlogged Conditions in Relation to Other Properties of Tropical Rice Soils
The mineralizable nitrogen pool in wetland rice soils plays a dominant role in the nitrogen nutrition of rice even in fertilized paddies. There is a lack of information on how different soil properties affect ammonification of organic nitrogen in wetland rice soils. Surface samples of 39 diverse Phi...
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Commonwealth Scientific and Industrial Research Organisation
1983
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| Acceso en línea: | https://hdl.handle.net/10568/167849 |
| _version_ | 1855531349254864896 |
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| author | Sahrawat, K.L. |
| author_browse | Sahrawat, K.L. |
| author_facet | Sahrawat, K.L. |
| author_sort | Sahrawat, K.L. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The mineralizable nitrogen pool in wetland rice soils plays a dominant role in the nitrogen nutrition of rice even in fertilized paddies. There is a lack of information on how different soil properties affect ammonification of organic nitrogen in wetland rice soils. Surface samples of 39 diverse Philippine soils representing a wide range of pH, organic matter and texture were studied to determine the relationships between ammonification of organic nitrogen and soil properties. Simple correlation analysis showed that ammonium production was correlated highly significantly with total nitrogen (r = 0.94**), organic carbon (r = 0.91**) and C/N ratio (r = -0.46**), but it was not significantly correlated with cation exchange capacity, clay or pH. Multiple regression analayses showed that organic matter (organic carbon and total nitrogen) accounted for most of the variation in mineralizable nitrogen. These results suggest that organic carbon content is a good index of mineralizable nitrogen in tropical wetland rice soils. |
| format | Journal Article |
| id | CGSpace167849 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1983 |
| publishDateRange | 1983 |
| publishDateSort | 1983 |
| publisher | Commonwealth Scientific and Industrial Research Organisation |
| publisherStr | Commonwealth Scientific and Industrial Research Organisation |
| record_format | dspace |
| spelling | CGSpace1678492025-12-08T10:29:22Z Mineralization of Soil Organic Nitrogen Under Waterlogged Conditions in Relation to Other Properties of Tropical Rice Soils Sahrawat, K.L. mineralization soil organic nitrogen waterlogged conditions properties tropical rice soils The mineralizable nitrogen pool in wetland rice soils plays a dominant role in the nitrogen nutrition of rice even in fertilized paddies. There is a lack of information on how different soil properties affect ammonification of organic nitrogen in wetland rice soils. Surface samples of 39 diverse Philippine soils representing a wide range of pH, organic matter and texture were studied to determine the relationships between ammonification of organic nitrogen and soil properties. Simple correlation analysis showed that ammonium production was correlated highly significantly with total nitrogen (r = 0.94**), organic carbon (r = 0.91**) and C/N ratio (r = -0.46**), but it was not significantly correlated with cation exchange capacity, clay or pH. Multiple regression analayses showed that organic matter (organic carbon and total nitrogen) accounted for most of the variation in mineralizable nitrogen. These results suggest that organic carbon content is a good index of mineralizable nitrogen in tropical wetland rice soils. 1983 2024-12-19T12:57:45Z 2024-12-19T12:57:45Z Journal Article https://hdl.handle.net/10568/167849 en Commonwealth Scientific and Industrial Research Organisation Sahrawat, KL. 1983. Mineralization of Soil Organic Nitrogen Under Waterlogged Conditions in Relation to Other Properties of Tropical Rice Soils. Soil Res., Volume 21 no. 2 p. 133 |
| spellingShingle | mineralization soil organic nitrogen waterlogged conditions properties tropical rice soils Sahrawat, K.L. Mineralization of Soil Organic Nitrogen Under Waterlogged Conditions in Relation to Other Properties of Tropical Rice Soils |
| title | Mineralization of Soil Organic Nitrogen Under Waterlogged Conditions in Relation to Other Properties of Tropical Rice Soils |
| title_full | Mineralization of Soil Organic Nitrogen Under Waterlogged Conditions in Relation to Other Properties of Tropical Rice Soils |
| title_fullStr | Mineralization of Soil Organic Nitrogen Under Waterlogged Conditions in Relation to Other Properties of Tropical Rice Soils |
| title_full_unstemmed | Mineralization of Soil Organic Nitrogen Under Waterlogged Conditions in Relation to Other Properties of Tropical Rice Soils |
| title_short | Mineralization of Soil Organic Nitrogen Under Waterlogged Conditions in Relation to Other Properties of Tropical Rice Soils |
| title_sort | mineralization of soil organic nitrogen under waterlogged conditions in relation to other properties of tropical rice soils |
| topic | mineralization soil organic nitrogen waterlogged conditions properties tropical rice soils |
| url | https://hdl.handle.net/10568/167849 |
| work_keys_str_mv | AT sahrawatkl mineralizationofsoilorganicnitrogenunderwaterloggedconditionsinrelationtootherpropertiesoftropicalricesoils |