Edaphic forms of phosphorus in no-tillage cropping sequences in the Argentine southern central Pampas
Agriculture significantly affects phosphorus (P) availability, thereby modifying P equilibrium. The objective of this study was to evaluate the effect of different crop sequences on the dynamics of soil P forms under no tillage. Soil samples were collected from a system of five sequences initiated i...
| Autores principales: | , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
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2018
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| Materias: | |
| Acceso en línea: | https://www.sciencedirect.com/science/article/pii/S001670611730229X http://hdl.handle.net/20.500.12123/2289 https://doi.org/10.1016/j.geoderma.2018.02.027 |
| _version_ | 1855034936950521856 |
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| author | Suñer, Liliana García, Ramiro Galantini, Juan Alberto Forjan, Horacio Jose Paz Gonzalez, Antonio |
| author_browse | Forjan, Horacio Jose Galantini, Juan Alberto García, Ramiro Paz Gonzalez, Antonio Suñer, Liliana |
| author_facet | Suñer, Liliana García, Ramiro Galantini, Juan Alberto Forjan, Horacio Jose Paz Gonzalez, Antonio |
| author_sort | Suñer, Liliana |
| collection | INTA Digital |
| description | Agriculture significantly affects phosphorus (P) availability, thereby modifying P equilibrium. The objective of this study was to evaluate the effect of different crop sequences on the dynamics of soil P forms under no tillage. Soil samples were collected from a system of five sequences initiated in 1998. The agricultural sequences followed the scheme crop diversity (CD), crop-pasture (CP, without grasses), traditional crops 1 (TC1, for limited soils), traditional crops 2 (TC2), and traditional crops 3. TC3). The available P (Pe) was determined and soil P was fractionated. Organic P extracted with NaOH (PoNa) was analyzed by spectrometry UV–visible and IR. Under CP, the available P decreased in both organic and inorganic labile forms, whereas PoNa values increased. Higher Pe was observed in TC1and TC3. The E4/E6 rates showed that the systems with the lowest degree of aromaticity were CP, TC1 and TC3. These three management sequences presented high PoNa values and, from these values, CP showed lower values for Pe, indicating differences in the chemical quality of the molecule. The 1050/1260 spectra, which relates an aliphatic ester to an aromatic ester, indicated that the CP and TC3 ratios were 1.3 and 0.94, respectively. In other words, the predominant type of ester in CP is aliphatic and in TC3 predominant esters would be of the aromatic type. Crop rotations can produce changes in organic P forms, which will modify the predominant functional group and the way this nutrient interacts with the soil matrix. Inclusion of pastures in a rotation maintains plant-available P at lower levels. However, this is the sequence that keeps moderately labile P (PoNa) at higher levels. |
| format | info:ar-repo/semantics/artículo |
| id | INTA2289 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| record_format | dspace |
| spelling | INTA22892018-06-29T12:56:50Z Edaphic forms of phosphorus in no-tillage cropping sequences in the Argentine southern central Pampas Suñer, Liliana García, Ramiro Galantini, Juan Alberto Forjan, Horacio Jose Paz Gonzalez, Antonio Fósforo Suelo Factores Edáficos Cero-labranza Ordenación de Cultivos Phosphorus Soil Edaphic Factors Zero Tillage Cropping Patterns Región Pampeana Agriculture significantly affects phosphorus (P) availability, thereby modifying P equilibrium. The objective of this study was to evaluate the effect of different crop sequences on the dynamics of soil P forms under no tillage. Soil samples were collected from a system of five sequences initiated in 1998. The agricultural sequences followed the scheme crop diversity (CD), crop-pasture (CP, without grasses), traditional crops 1 (TC1, for limited soils), traditional crops 2 (TC2), and traditional crops 3. TC3). The available P (Pe) was determined and soil P was fractionated. Organic P extracted with NaOH (PoNa) was analyzed by spectrometry UV–visible and IR. Under CP, the available P decreased in both organic and inorganic labile forms, whereas PoNa values increased. Higher Pe was observed in TC1and TC3. The E4/E6 rates showed that the systems with the lowest degree of aromaticity were CP, TC1 and TC3. These three management sequences presented high PoNa values and, from these values, CP showed lower values for Pe, indicating differences in the chemical quality of the molecule. The 1050/1260 spectra, which relates an aliphatic ester to an aromatic ester, indicated that the CP and TC3 ratios were 1.3 and 0.94, respectively. In other words, the predominant type of ester in CP is aliphatic and in TC3 predominant esters would be of the aromatic type. Crop rotations can produce changes in organic P forms, which will modify the predominant functional group and the way this nutrient interacts with the soil matrix. Inclusion of pastures in a rotation maintains plant-available P at lower levels. However, this is the sequence that keeps moderately labile P (PoNa) at higher levels. EEA Barrow Fil: Suñer, Liliana. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina Fil: García, Ramiro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina Fil: Galantini, Juan Alberto. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina Fil: Forjan, Horacio Jose. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Barrow; Argentina Fil: Paz Gonzalez, Antonio. University of A Coruña. Centre for Advanced Scientific Research; España 2018-04-23T17:39:11Z 2018-04-23T17:39:11Z 2018-08 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S001670611730229X http://hdl.handle.net/20.500.12123/2289 0016-7061 1872-6259 https://doi.org/10.1016/j.geoderma.2018.02.027 eng info:eu-repo/semantics/restrictedAccess application/pdf Geoderma 323 : 107-115. (August 2018) |
| spellingShingle | Fósforo Suelo Factores Edáficos Cero-labranza Ordenación de Cultivos Phosphorus Soil Edaphic Factors Zero Tillage Cropping Patterns Región Pampeana Suñer, Liliana García, Ramiro Galantini, Juan Alberto Forjan, Horacio Jose Paz Gonzalez, Antonio Edaphic forms of phosphorus in no-tillage cropping sequences in the Argentine southern central Pampas |
| title | Edaphic forms of phosphorus in no-tillage cropping sequences in the Argentine southern central Pampas |
| title_full | Edaphic forms of phosphorus in no-tillage cropping sequences in the Argentine southern central Pampas |
| title_fullStr | Edaphic forms of phosphorus in no-tillage cropping sequences in the Argentine southern central Pampas |
| title_full_unstemmed | Edaphic forms of phosphorus in no-tillage cropping sequences in the Argentine southern central Pampas |
| title_short | Edaphic forms of phosphorus in no-tillage cropping sequences in the Argentine southern central Pampas |
| title_sort | edaphic forms of phosphorus in no tillage cropping sequences in the argentine southern central pampas |
| topic | Fósforo Suelo Factores Edáficos Cero-labranza Ordenación de Cultivos Phosphorus Soil Edaphic Factors Zero Tillage Cropping Patterns Región Pampeana |
| url | https://www.sciencedirect.com/science/article/pii/S001670611730229X http://hdl.handle.net/20.500.12123/2289 https://doi.org/10.1016/j.geoderma.2018.02.027 |
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