Biological nitrogen fixation by common beans (Phaseolus vulgaris L.) increases with bio-char additions
This study examines the potential, magnitude, and causes of enhanced biological N2 fixation (BNF) by common beans (Phaseolus vulgaris L.) through bio-char additions (charcoal, biomass-derived black carbon). Bio-char was added at 0, 30, 60, and 90 g kg?1 soil, and BNF was determined using the isotope...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2007
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/43230 |
| _version_ | 1855535350084009984 |
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| author | Rondón, Marco Antonio Lehmann, Johannes Ramírez, Juan Hurtado, M.P. |
| author_browse | Hurtado, M.P. Lehmann, Johannes Ramírez, Juan Rondón, Marco Antonio |
| author_facet | Rondón, Marco Antonio Lehmann, Johannes Ramírez, Juan Hurtado, M.P. |
| author_sort | Rondón, Marco Antonio |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | This study examines the potential, magnitude, and causes of enhanced biological N2 fixation (BNF) by common beans (Phaseolus vulgaris L.) through bio-char additions (charcoal, biomass-derived black carbon). Bio-char was added at 0, 30, 60, and 90 g kg?1 soil, and BNF was determined using the isotope dilution method after adding 15N-enriched ammonium sulfate to a Typic Haplustox cropped to a potentially nodulating bean variety (CIAT BAT 477) in comparison to its non-nodulating isoline (BAT 477NN), both inoculated with effective Rhizobium strains. The proportion of fixed N increased from 50% without bio-char additions to 72% with 90 g kg?1 bio-char added. While total N derived from the atmosphere (NdfA) significantly increased by 49 and 78% with 30 and 60 g kg?1 bio-char added to soil, respectively, NdfA decreased to 30% above the control with 90 g kg?1 due to low total biomass production and N uptake. The primary reason for the higher BNF with bio-char additions was the greater B and Mo availability, whereas greater K, Ca, and P availability, as well as higher pH and lower N availability and Al saturation, may have contributed to a lesser extent. Enhanced mycorrhizal infections of roots were not found to contribute to better nutrient uptake and BNF. Bean yield increased by 46% and biomass production by 39% over the control at 90 and 60 g kg?1 bio-char, respectively. However, biomass production and total N uptake decreased when bio-char applications were increased to 90 g kg?1. Soil N uptake by N-fixing beans decreased by 14, 17, and 50% when 30, 60, and 90 g kg?1 bio-char were added to soil, whereas the C/N ratios increased from 16 to 23.7, 28, and 35, respectively. Results demonstrate the potential of bio-char applications to improve N input into agroecosystems while pointing out the needs for long-term field studies to better understand the effects of bio-char on BNF. |
| format | Journal Article |
| id | CGSpace43230 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2007 |
| publishDateRange | 2007 |
| publishDateSort | 2007 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace432302024-08-27T10:36:47Z Biological nitrogen fixation by common beans (Phaseolus vulgaris L.) increases with bio-char additions Rondón, Marco Antonio Lehmann, Johannes Ramírez, Juan Hurtado, M.P. phaseolus vulgaris biological nitrogen fixation rhizobium mycorrhizae acid soils fijación biológica del nitrógeno suelo ácido This study examines the potential, magnitude, and causes of enhanced biological N2 fixation (BNF) by common beans (Phaseolus vulgaris L.) through bio-char additions (charcoal, biomass-derived black carbon). Bio-char was added at 0, 30, 60, and 90 g kg?1 soil, and BNF was determined using the isotope dilution method after adding 15N-enriched ammonium sulfate to a Typic Haplustox cropped to a potentially nodulating bean variety (CIAT BAT 477) in comparison to its non-nodulating isoline (BAT 477NN), both inoculated with effective Rhizobium strains. The proportion of fixed N increased from 50% without bio-char additions to 72% with 90 g kg?1 bio-char added. While total N derived from the atmosphere (NdfA) significantly increased by 49 and 78% with 30 and 60 g kg?1 bio-char added to soil, respectively, NdfA decreased to 30% above the control with 90 g kg?1 due to low total biomass production and N uptake. The primary reason for the higher BNF with bio-char additions was the greater B and Mo availability, whereas greater K, Ca, and P availability, as well as higher pH and lower N availability and Al saturation, may have contributed to a lesser extent. Enhanced mycorrhizal infections of roots were not found to contribute to better nutrient uptake and BNF. Bean yield increased by 46% and biomass production by 39% over the control at 90 and 60 g kg?1 bio-char, respectively. However, biomass production and total N uptake decreased when bio-char applications were increased to 90 g kg?1. Soil N uptake by N-fixing beans decreased by 14, 17, and 50% when 30, 60, and 90 g kg?1 bio-char were added to soil, whereas the C/N ratios increased from 16 to 23.7, 28, and 35, respectively. Results demonstrate the potential of bio-char applications to improve N input into agroecosystems while pointing out the needs for long-term field studies to better understand the effects of bio-char on BNF. 2007-08 2014-09-24T08:41:49Z 2014-09-24T08:41:49Z Journal Article https://hdl.handle.net/10568/43230 en Limited Access Springer |
| spellingShingle | phaseolus vulgaris biological nitrogen fixation rhizobium mycorrhizae acid soils fijación biológica del nitrógeno suelo ácido Rondón, Marco Antonio Lehmann, Johannes Ramírez, Juan Hurtado, M.P. Biological nitrogen fixation by common beans (Phaseolus vulgaris L.) increases with bio-char additions |
| title | Biological nitrogen fixation by common beans (Phaseolus vulgaris L.) increases with bio-char additions |
| title_full | Biological nitrogen fixation by common beans (Phaseolus vulgaris L.) increases with bio-char additions |
| title_fullStr | Biological nitrogen fixation by common beans (Phaseolus vulgaris L.) increases with bio-char additions |
| title_full_unstemmed | Biological nitrogen fixation by common beans (Phaseolus vulgaris L.) increases with bio-char additions |
| title_short | Biological nitrogen fixation by common beans (Phaseolus vulgaris L.) increases with bio-char additions |
| title_sort | biological nitrogen fixation by common beans phaseolus vulgaris l increases with bio char additions |
| topic | phaseolus vulgaris biological nitrogen fixation rhizobium mycorrhizae acid soils fijación biológica del nitrógeno suelo ácido |
| url | https://hdl.handle.net/10568/43230 |
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