Contribution of N-2 fixing cyanobacteria to rice production: availability of nitrogen from N-15-labelled cyanobacteria and ammonium sulphate to rice
This study investigate the potential contribution of nitrogen fixation by indigenous cyanobacteria to rice production in the rice fields of Valencia (Spain). N-2-fixing cyanobacteria abundance and N-2 fixation decreased with increasing amounts of fertilizers. Grain yield increased with increasing am...
| Main Authors: | , , , , |
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| Format: | article |
| Language: | Inglés |
| Published: |
2017
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| Online Access: | http://hdl.handle.net/20.500.11939/4669 |
| _version_ | 1855032159037816832 |
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| author | Valiente, E. F. Ucha, A. Quesada, A. Leganes, F. Carreres, Ramón |
| author_browse | Carreres, Ramón Leganes, F. Quesada, A. Ucha, A. Valiente, E. F. |
| author_facet | Valiente, E. F. Ucha, A. Quesada, A. Leganes, F. Carreres, Ramón |
| author_sort | Valiente, E. F. |
| collection | ReDivia |
| description | This study investigate the potential contribution of nitrogen fixation by indigenous cyanobacteria to rice production in the rice fields of Valencia (Spain). N-2-fixing cyanobacteria abundance and N-2 fixation decreased with increasing amounts of fertilizers. Grain yield increased with increasing amounts of fertilizers up to 70 kg N ha(-1). No further increase was observed with 140 kg N ha(-1). Soil N was the main source of N for rice, only 8-14% of the total N incorporated by plants derived from N-15 fertilizer. Recovery of applied N-15-ammonium sulphate by the soil-plant system was lower than 50%. Losses were attributed to ammonia volatilization, since only 0.3-1% of applied N was lost by denitrification. Recovery of N-15 from labeled cyanobacteria by the soil-plant system was higher than that from chemical fertilizers. Cyanobacterial N was available to rice plant even at the tillering stage, 20 days after N application. |
| format | article |
| id | ReDivia4669 |
| institution | Instituto Valenciano de Investigaciones Agrarias (IVIA) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | ReDivia46692025-04-25T14:44:07Z Contribution of N-2 fixing cyanobacteria to rice production: availability of nitrogen from N-15-labelled cyanobacteria and ammonium sulphate to rice Valiente, E. F. Ucha, A. Quesada, A. Leganes, F. Carreres, Ramón This study investigate the potential contribution of nitrogen fixation by indigenous cyanobacteria to rice production in the rice fields of Valencia (Spain). N-2-fixing cyanobacteria abundance and N-2 fixation decreased with increasing amounts of fertilizers. Grain yield increased with increasing amounts of fertilizers up to 70 kg N ha(-1). No further increase was observed with 140 kg N ha(-1). Soil N was the main source of N for rice, only 8-14% of the total N incorporated by plants derived from N-15 fertilizer. Recovery of applied N-15-ammonium sulphate by the soil-plant system was lower than 50%. Losses were attributed to ammonia volatilization, since only 0.3-1% of applied N was lost by denitrification. Recovery of N-15 from labeled cyanobacteria by the soil-plant system was higher than that from chemical fertilizers. Cyanobacterial N was available to rice plant even at the tillering stage, 20 days after N application. 2017-06-01T10:10:42Z 2017-06-01T10:10:42Z 2000 2000 article Valiente, E. F., Ucha, A., Quesada, A., Leganes, F., Carreres, R. (2000). Contribution of N-2 fixing cyanobacteria to rice production: availability of nitrogen from N-15-labelled cyanobacteria and ammonium sulphate to rice. Plant and Soil, 221(1), 107-112. 0032-079X http://hdl.handle.net/20.500.11939/4669 http://hdl.handle.net/20.500.11939/4669 10.1023/A:1004737422842 en openAccess Impreso |
| spellingShingle | Valiente, E. F. Ucha, A. Quesada, A. Leganes, F. Carreres, Ramón Contribution of N-2 fixing cyanobacteria to rice production: availability of nitrogen from N-15-labelled cyanobacteria and ammonium sulphate to rice |
| title | Contribution of N-2 fixing cyanobacteria to rice production: availability of nitrogen from N-15-labelled cyanobacteria and ammonium sulphate to rice |
| title_full | Contribution of N-2 fixing cyanobacteria to rice production: availability of nitrogen from N-15-labelled cyanobacteria and ammonium sulphate to rice |
| title_fullStr | Contribution of N-2 fixing cyanobacteria to rice production: availability of nitrogen from N-15-labelled cyanobacteria and ammonium sulphate to rice |
| title_full_unstemmed | Contribution of N-2 fixing cyanobacteria to rice production: availability of nitrogen from N-15-labelled cyanobacteria and ammonium sulphate to rice |
| title_short | Contribution of N-2 fixing cyanobacteria to rice production: availability of nitrogen from N-15-labelled cyanobacteria and ammonium sulphate to rice |
| title_sort | contribution of n 2 fixing cyanobacteria to rice production availability of nitrogen from n 15 labelled cyanobacteria and ammonium sulphate to rice |
| url | http://hdl.handle.net/20.500.11939/4669 http://hdl.handle.net/20.500.11939/4669 |
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