Adaptive attributes of tropical forage species to acid soils. III. Differences in phosphorus acquisition and utilization as influenced by varying phosphorus supply and soil type
Low phosphorus (P) supply is a major limitation of forage production in acid soils of the tropics. A glasshouse experiment was conducted to determine the differences in P acquisition and utilization among three legumes (Arachis pintoi, Stylosanthes capitata and Centrosema acutifolium) and one grass...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
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Informa UK Limited
1997
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/77760 |
| _version_ | 1855517871001567232 |
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| author | Rao, Idupulapati M. Borrero, V. Ricaurte Oyola, José Jaumer García, Ramiro Ayarza, Miguel Angel |
| author_browse | Ayarza, Miguel Angel Borrero, V. García, Ramiro Rao, Idupulapati M. Ricaurte Oyola, José Jaumer |
| author_facet | Rao, Idupulapati M. Borrero, V. Ricaurte Oyola, José Jaumer García, Ramiro Ayarza, Miguel Angel |
| author_sort | Rao, Idupulapati M. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Low phosphorus (P) supply is a major limitation of forage production in acid soils of the tropics. A glasshouse experiment was conducted to determine the differences in P acquisition and utilization among three legumes (Arachis pintoi, Stylosanthes capitata and Centrosema acutifolium) and one grass (Brachiaria dictyoneura). The plants were grown under monoculture or in grass + legume associations in two acid Oxisols of contrasting texture (sandy loam or clay loam). The soils were amended with soluble phosphate at rates ranging from 0 to 50 kg‐ha‐1. After 80 days of growth, total P and nitrogen (N) content in different plant parts, inorganic P content and acid phosphatase activity in roots and leaves, vesicular‐arbuscular mycorrhizal root infection, total P acquisition from soil, P acquisition efficiency, P transport index, and P use efficiency were determined. Total P acquisition (per unit soil surface) of A. pintoi was higher than that of the other two legumes at 50 kg‐ha‐l of P supply. Phosphorus acquisition efficiency (mg of P uptake in shoot biomass per unit root weight) of the legumes in both soil types was several times higher than that of the grass at 50 kg‐ha‐1 of P supply. Acid phosphatase activity in roots of the grass decreased markedly as the supply of P increased in the soil, whereas enzyme activity was maintained in the legumes at 50 kg‐ha‐1 of P supply. Phosphorus use efficiency (g of forage produced per g of total P acquisition) of the grass in both soil types was markedly higher than that of the three legumes at all levels of P supply. This study highlighted the fact that inherent differences in efficiencies of P acquisition and utilization exist between tropical forage grass and legume species. These differences may play a major role in legume persistence in tropical pastures. |
| format | Journal Article |
| id | CGSpace77760 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1997 |
| publishDateRange | 1997 |
| publishDateSort | 1997 |
| publisher | Informa UK Limited |
| publisherStr | Informa UK Limited |
| record_format | dspace |
| spelling | CGSpace777602025-03-13T09:44:01Z Adaptive attributes of tropical forage species to acid soils. III. Differences in phosphorus acquisition and utilization as influenced by varying phosphorus supply and soil type Rao, Idupulapati M. Borrero, V. Ricaurte Oyola, José Jaumer García, Ramiro Ayarza, Miguel Angel feed crops adaptation acid soils phosphorus nutrient uptake nutrient transport growth plantas forrajeras adaptación suelo acido fósforo absorción de sustancias nutritivas transporte de nutrientes crecimiento physiology Low phosphorus (P) supply is a major limitation of forage production in acid soils of the tropics. A glasshouse experiment was conducted to determine the differences in P acquisition and utilization among three legumes (Arachis pintoi, Stylosanthes capitata and Centrosema acutifolium) and one grass (Brachiaria dictyoneura). The plants were grown under monoculture or in grass + legume associations in two acid Oxisols of contrasting texture (sandy loam or clay loam). The soils were amended with soluble phosphate at rates ranging from 0 to 50 kg‐ha‐1. After 80 days of growth, total P and nitrogen (N) content in different plant parts, inorganic P content and acid phosphatase activity in roots and leaves, vesicular‐arbuscular mycorrhizal root infection, total P acquisition from soil, P acquisition efficiency, P transport index, and P use efficiency were determined. Total P acquisition (per unit soil surface) of A. pintoi was higher than that of the other two legumes at 50 kg‐ha‐l of P supply. Phosphorus acquisition efficiency (mg of P uptake in shoot biomass per unit root weight) of the legumes in both soil types was several times higher than that of the grass at 50 kg‐ha‐1 of P supply. Acid phosphatase activity in roots of the grass decreased markedly as the supply of P increased in the soil, whereas enzyme activity was maintained in the legumes at 50 kg‐ha‐1 of P supply. Phosphorus use efficiency (g of forage produced per g of total P acquisition) of the grass in both soil types was markedly higher than that of the three legumes at all levels of P supply. This study highlighted the fact that inherent differences in efficiencies of P acquisition and utilization exist between tropical forage grass and legume species. These differences may play a major role in legume persistence in tropical pastures. 1997-01 2016-11-15T15:46:19Z 2016-11-15T15:46:19Z Journal Article https://hdl.handle.net/10568/77760 en Open Access Informa UK Limited Rao, Idupulapati Madhusudana; Borrero, V.; Ricaurte Oyola, Jaumer J.; Garcia, Ramiro; Ayarza, Miguel Angel. 1997. Adaptive attributes of tropical forage species to acid soils. III. Differences in phosphorus acquisition and utilization as influenced by varying phosphorus supply and soil type . Journal of Plant Nutrition (USA) 20(1):155-180. |
| spellingShingle | feed crops adaptation acid soils phosphorus nutrient uptake nutrient transport growth plantas forrajeras adaptación suelo acido fósforo absorción de sustancias nutritivas transporte de nutrientes crecimiento physiology Rao, Idupulapati M. Borrero, V. Ricaurte Oyola, José Jaumer García, Ramiro Ayarza, Miguel Angel Adaptive attributes of tropical forage species to acid soils. III. Differences in phosphorus acquisition and utilization as influenced by varying phosphorus supply and soil type |
| title | Adaptive attributes of tropical forage species to acid soils. III. Differences in phosphorus acquisition and utilization as influenced by varying phosphorus supply and soil type |
| title_full | Adaptive attributes of tropical forage species to acid soils. III. Differences in phosphorus acquisition and utilization as influenced by varying phosphorus supply and soil type |
| title_fullStr | Adaptive attributes of tropical forage species to acid soils. III. Differences in phosphorus acquisition and utilization as influenced by varying phosphorus supply and soil type |
| title_full_unstemmed | Adaptive attributes of tropical forage species to acid soils. III. Differences in phosphorus acquisition and utilization as influenced by varying phosphorus supply and soil type |
| title_short | Adaptive attributes of tropical forage species to acid soils. III. Differences in phosphorus acquisition and utilization as influenced by varying phosphorus supply and soil type |
| title_sort | adaptive attributes of tropical forage species to acid soils iii differences in phosphorus acquisition and utilization as influenced by varying phosphorus supply and soil type |
| topic | feed crops adaptation acid soils phosphorus nutrient uptake nutrient transport growth plantas forrajeras adaptación suelo acido fósforo absorción de sustancias nutritivas transporte de nutrientes crecimiento physiology |
| url | https://hdl.handle.net/10568/77760 |
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