Shoot and root growth of two tropical grasses, Brachiaria ruziziensis and B. dictyoneura, as influenced by aluminium toxicity and phosphorus deficiency in a sandy loam oxisol of the eastern plains of Colombia
Phosphorus (P) deficiency and aluminium (Al) toxicity are widespread in Oxisols of the tropical savannas of eastern Colombia. A field experiment was conducted to determine the effect of Al toxicity and P deficiency on plant growth and nutrient uptake of two Brachiaria species. To examine the influen...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
2006
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/44093 |
| _version_ | 1855516670379950080 |
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| author | Hausller, K Rao, Idupulapati M. Schultze-Kraft, Rainer Marschner, H |
| author_browse | Hausller, K Marschner, H Rao, Idupulapati M. Schultze-Kraft, Rainer |
| author_facet | Hausller, K Rao, Idupulapati M. Schultze-Kraft, Rainer Marschner, H |
| author_sort | Hausller, K |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Phosphorus (P) deficiency and aluminium (Al) toxicity are widespread in Oxisols of the tropical savannas of eastern Colombia. A field experiment was conducted to determine the effect of Al toxicity and P deficiency on plant growth and nutrient uptake of two Brachiaria species. To examine the influence of nutrient supply and lime on root and shoot growth, two levels of fertiliser application (low and high) were superimposed on the control, lime and gypsum treatments. Results from this field study showed that growth limitations of B. ruziziensis and B. dictyoneura (syn. B. humidicola) did not result from either P deficiency or Al toxicity. B. ruziziensis, despite lower root length, produced under the experimental conditions more shoot dry matter than B. dictyoneura with similar or greater P and Ca concentrations. Therefore, efficiency of Ca and/ or P uptake per unit root length was greater in B. ruziziensis than in B. dictyoneura. This ability of B. ruziziensis may contribute to its rapid establishment during the first year of pasture growth. Further studies are warranted to verify the apparent growth responses of these grasses to application of Ca on these soils. |
| format | Journal Article |
| id | CGSpace44093 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2006 |
| publishDateRange | 2006 |
| publishDateSort | 2006 |
| record_format | dspace |
| spelling | CGSpace440932023-02-15T05:11:33Z Shoot and root growth of two tropical grasses, Brachiaria ruziziensis and B. dictyoneura, as influenced by aluminium toxicity and phosphorus deficiency in a sandy loam oxisol of the eastern plains of Colombia Hausller, K Rao, Idupulapati M. Schultze-Kraft, Rainer Marschner, H feed crops brachiaria ruziziensis brachiaria dictyoneura soil toxicity acid soils aluminium growth savannas toxicidad del suelo suelo ácido aluminio brotes crecimiento sabanas Phosphorus (P) deficiency and aluminium (Al) toxicity are widespread in Oxisols of the tropical savannas of eastern Colombia. A field experiment was conducted to determine the effect of Al toxicity and P deficiency on plant growth and nutrient uptake of two Brachiaria species. To examine the influence of nutrient supply and lime on root and shoot growth, two levels of fertiliser application (low and high) were superimposed on the control, lime and gypsum treatments. Results from this field study showed that growth limitations of B. ruziziensis and B. dictyoneura (syn. B. humidicola) did not result from either P deficiency or Al toxicity. B. ruziziensis, despite lower root length, produced under the experimental conditions more shoot dry matter than B. dictyoneura with similar or greater P and Ca concentrations. Therefore, efficiency of Ca and/ or P uptake per unit root length was greater in B. ruziziensis than in B. dictyoneura. This ability of B. ruziziensis may contribute to its rapid establishment during the first year of pasture growth. Further studies are warranted to verify the apparent growth responses of these grasses to application of Ca on these soils. 2006 2014-10-02T08:33:14Z 2014-10-02T08:33:14Z Journal Article https://hdl.handle.net/10568/44093 en Open Access |
| spellingShingle | feed crops brachiaria ruziziensis brachiaria dictyoneura soil toxicity acid soils aluminium growth savannas toxicidad del suelo suelo ácido aluminio brotes crecimiento sabanas Hausller, K Rao, Idupulapati M. Schultze-Kraft, Rainer Marschner, H Shoot and root growth of two tropical grasses, Brachiaria ruziziensis and B. dictyoneura, as influenced by aluminium toxicity and phosphorus deficiency in a sandy loam oxisol of the eastern plains of Colombia |
| title | Shoot and root growth of two tropical grasses, Brachiaria ruziziensis and B. dictyoneura, as influenced by aluminium toxicity and phosphorus deficiency in a sandy loam oxisol of the eastern plains of Colombia |
| title_full | Shoot and root growth of two tropical grasses, Brachiaria ruziziensis and B. dictyoneura, as influenced by aluminium toxicity and phosphorus deficiency in a sandy loam oxisol of the eastern plains of Colombia |
| title_fullStr | Shoot and root growth of two tropical grasses, Brachiaria ruziziensis and B. dictyoneura, as influenced by aluminium toxicity and phosphorus deficiency in a sandy loam oxisol of the eastern plains of Colombia |
| title_full_unstemmed | Shoot and root growth of two tropical grasses, Brachiaria ruziziensis and B. dictyoneura, as influenced by aluminium toxicity and phosphorus deficiency in a sandy loam oxisol of the eastern plains of Colombia |
| title_short | Shoot and root growth of two tropical grasses, Brachiaria ruziziensis and B. dictyoneura, as influenced by aluminium toxicity and phosphorus deficiency in a sandy loam oxisol of the eastern plains of Colombia |
| title_sort | shoot and root growth of two tropical grasses brachiaria ruziziensis and b dictyoneura as influenced by aluminium toxicity and phosphorus deficiency in a sandy loam oxisol of the eastern plains of colombia |
| topic | feed crops brachiaria ruziziensis brachiaria dictyoneura soil toxicity acid soils aluminium growth savannas toxicidad del suelo suelo ácido aluminio brotes crecimiento sabanas |
| url | https://hdl.handle.net/10568/44093 |
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