Ammonia and Nitrous Oxide Losses Following Applications of Ammonium Sulfate to Flooded Rice
Ammonia volatilization from applications of ammonium sulfate to a wet season crop of flooded rice in the Philippines was measured directly by a micrometeorological technique. Prior to transplanting the rice, ammonium sulfate (80 kg nitrogen ha-1) was broadcast over the flooded soil and incorporated...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Commonwealth Scientific and Industrial Research Organisation
1981
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/167909 |
| _version_ | 1855513038216495104 |
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| author | Freney, JR Denmead, OT Watanabe, I. Craswell, E.T. |
| author_browse | Craswell, E.T. Denmead, OT Freney, JR Watanabe, I. |
| author_facet | Freney, JR Denmead, OT Watanabe, I. Craswell, E.T. |
| author_sort | Freney, JR |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Ammonia volatilization from applications of ammonium sulfate to a wet season crop of flooded rice in the Philippines was measured directly by a micrometeorological technique. Prior to transplanting the rice, ammonium sulfate (80 kg nitrogen ha-1) was broadcast over the flooded soil and incorporated by harrowing. A further 40 kg nitrogen ha-1 was broadcast at the panicle initiation stage. The soil pH was 6.7, while the pH of the floodwater varied from 7 . 5 to 9.5 during the course of the experiment. Loss of ammonia was detected immediately after application of ammonium sulfate and continued for approximately 7 days. Ammonia volatilization rates were highest in the middle of the day and declined each evening following the diurnal variations in water temperature and wind speed. More ammonia was lost from the fertilizer applied at the panicle initiation stage (10.6%) than from the pre-planting application (5.1 %). The overall measured loss of ammonia was small and amounted to approximately 7 % of the total nitrogen applied to the crop. Nitrous oxide losses, measured with a chamber system, amounted to only 0.1 % of the nitrogen applied as ammonium sulfate. |
| format | Journal Article |
| id | CGSpace167909 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1981 |
| publishDateRange | 1981 |
| publishDateSort | 1981 |
| publisher | Commonwealth Scientific and Industrial Research Organisation |
| publisherStr | Commonwealth Scientific and Industrial Research Organisation |
| record_format | dspace |
| spelling | CGSpace1679092025-12-08T10:29:22Z Ammonia and Nitrous Oxide Losses Following Applications of Ammonium Sulfate to Flooded Rice Freney, JR Denmead, OT Watanabe, I. Craswell, E.T. ammonia nitrous oxide ammonium sulfate flooded rice Ammonia volatilization from applications of ammonium sulfate to a wet season crop of flooded rice in the Philippines was measured directly by a micrometeorological technique. Prior to transplanting the rice, ammonium sulfate (80 kg nitrogen ha-1) was broadcast over the flooded soil and incorporated by harrowing. A further 40 kg nitrogen ha-1 was broadcast at the panicle initiation stage. The soil pH was 6.7, while the pH of the floodwater varied from 7 . 5 to 9.5 during the course of the experiment. Loss of ammonia was detected immediately after application of ammonium sulfate and continued for approximately 7 days. Ammonia volatilization rates were highest in the middle of the day and declined each evening following the diurnal variations in water temperature and wind speed. More ammonia was lost from the fertilizer applied at the panicle initiation stage (10.6%) than from the pre-planting application (5.1 %). The overall measured loss of ammonia was small and amounted to approximately 7 % of the total nitrogen applied to the crop. Nitrous oxide losses, measured with a chamber system, amounted to only 0.1 % of the nitrogen applied as ammonium sulfate. 1981 2024-12-19T12:57:50Z 2024-12-19T12:57:50Z Journal Article https://hdl.handle.net/10568/167909 en Commonwealth Scientific and Industrial Research Organisation Freney, JR; Denmead, OT; Watanabe, I and Craswell, ET. 1981. Ammonia and Nitrous Oxide Losses Following Applications of Ammonium Sulfate to Flooded Rice. Aust. J. Agric. Res., Volume 32 no. 1 p. 37 |
| spellingShingle | ammonia nitrous oxide ammonium sulfate flooded rice Freney, JR Denmead, OT Watanabe, I. Craswell, E.T. Ammonia and Nitrous Oxide Losses Following Applications of Ammonium Sulfate to Flooded Rice |
| title | Ammonia and Nitrous Oxide Losses Following Applications of Ammonium Sulfate to Flooded Rice |
| title_full | Ammonia and Nitrous Oxide Losses Following Applications of Ammonium Sulfate to Flooded Rice |
| title_fullStr | Ammonia and Nitrous Oxide Losses Following Applications of Ammonium Sulfate to Flooded Rice |
| title_full_unstemmed | Ammonia and Nitrous Oxide Losses Following Applications of Ammonium Sulfate to Flooded Rice |
| title_short | Ammonia and Nitrous Oxide Losses Following Applications of Ammonium Sulfate to Flooded Rice |
| title_sort | ammonia and nitrous oxide losses following applications of ammonium sulfate to flooded rice |
| topic | ammonia nitrous oxide ammonium sulfate flooded rice |
| url | https://hdl.handle.net/10568/167909 |
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