Sesbania phosphorus requirements when used as biofertilizer for long-term rice cultivation
Green manures may affect the long‐term nutrient supplying capacity of soils. In a long‐term trial that compared the performance of azolla (Azolla microphylla Lam.), sesbania (Sesbania rostrata Bremek. and Oberm.), urea, and no fertilizer N on rice (Oryza sativa L.), a progressive decline in the grow...
| Autores principales: | , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
1997
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/167238 |
| _version_ | 1855530708327464960 |
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| author | Ventura, W. Ladha, J.K. |
| author_browse | Ladha, J.K. Ventura, W. |
| author_facet | Ventura, W. Ladha, J.K. |
| author_sort | Ventura, W. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Green manures may affect the long‐term nutrient supplying capacity of soils. In a long‐term trial that compared the performance of azolla (Azolla microphylla Lam.), sesbania (Sesbania rostrata Bremek. and Oberm.), urea, and no fertilizer N on rice (Oryza sativa L.), a progressive decline in the growth of and N accumulation by sesbania was observed after the ninth crop. This study examined the reasons for sesbania decline with emphasis on the effect of fertilizer P on sesbania performance in relation to soil available P, cropping history, and moisture regime. In the 1992 dry season (14th crop), sesbania performance with and without P was determined in (i) field microplots within main long‐term plots, and (ii) pots containing soil monoliths from long‐term plots. Without P fertilizer, sesbania grew poorly and accumulated <40 kg N ha−1. But addition of 28.4 kg P ha−1 increased sesbania N accumulation 3 to 11 fold and the greater N availability increased rice production. Addition of P improved sesbania biomass and N accumulation in dried‐flooded and continuously flooded regimes but not in the dried‐moist regime. Sesbania P requirements were greater than for rice. Continuous rice‐sesbania cropping without addition of P limited sesbania growth, N accumulation, and green manure value even though it did not limit rice production, suggesting that the P requirements will be greater for a long‐term rice cropping system that depends solely on green manure N than for rice grown with fertilizer N. |
| format | Journal Article |
| id | CGSpace167238 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1997 |
| publishDateRange | 1997 |
| publishDateSort | 1997 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1672382025-05-14T10:39:49Z Sesbania phosphorus requirements when used as biofertilizer for long-term rice cultivation Ventura, W. Ladha, J.K. cultivation green manures phosphorus soil azolla microphylla sesbania rostrata longterm experiments Green manures may affect the long‐term nutrient supplying capacity of soils. In a long‐term trial that compared the performance of azolla (Azolla microphylla Lam.), sesbania (Sesbania rostrata Bremek. and Oberm.), urea, and no fertilizer N on rice (Oryza sativa L.), a progressive decline in the growth of and N accumulation by sesbania was observed after the ninth crop. This study examined the reasons for sesbania decline with emphasis on the effect of fertilizer P on sesbania performance in relation to soil available P, cropping history, and moisture regime. In the 1992 dry season (14th crop), sesbania performance with and without P was determined in (i) field microplots within main long‐term plots, and (ii) pots containing soil monoliths from long‐term plots. Without P fertilizer, sesbania grew poorly and accumulated <40 kg N ha−1. But addition of 28.4 kg P ha−1 increased sesbania N accumulation 3 to 11 fold and the greater N availability increased rice production. Addition of P improved sesbania biomass and N accumulation in dried‐flooded and continuously flooded regimes but not in the dried‐moist regime. Sesbania P requirements were greater than for rice. Continuous rice‐sesbania cropping without addition of P limited sesbania growth, N accumulation, and green manure value even though it did not limit rice production, suggesting that the P requirements will be greater for a long‐term rice cropping system that depends solely on green manure N than for rice grown with fertilizer N. 1997-07 2024-12-19T12:57:09Z 2024-12-19T12:57:09Z Journal Article https://hdl.handle.net/10568/167238 en Wiley Ventura, W.; Ladha, J. K. 1997. Sesbania phosphorus requirements when used as biofertilizer for long-term rice cultivation. Soil Science Soc of Amer J, Volume 61 no. 4 p. 1240-1244 |
| spellingShingle | cultivation green manures phosphorus soil azolla microphylla sesbania rostrata longterm experiments Ventura, W. Ladha, J.K. Sesbania phosphorus requirements when used as biofertilizer for long-term rice cultivation |
| title | Sesbania phosphorus requirements when used as biofertilizer for long-term rice cultivation |
| title_full | Sesbania phosphorus requirements when used as biofertilizer for long-term rice cultivation |
| title_fullStr | Sesbania phosphorus requirements when used as biofertilizer for long-term rice cultivation |
| title_full_unstemmed | Sesbania phosphorus requirements when used as biofertilizer for long-term rice cultivation |
| title_short | Sesbania phosphorus requirements when used as biofertilizer for long-term rice cultivation |
| title_sort | sesbania phosphorus requirements when used as biofertilizer for long term rice cultivation |
| topic | cultivation green manures phosphorus soil azolla microphylla sesbania rostrata longterm experiments |
| url | https://hdl.handle.net/10568/167238 |
| work_keys_str_mv | AT venturaw sesbaniaphosphorusrequirementswhenusedasbiofertilizerforlongtermricecultivation AT ladhajk sesbaniaphosphorusrequirementswhenusedasbiofertilizerforlongtermricecultivation |