Glyphosate and nutrient retention in preferential flow pathways
Riparian vegetation strips (RVS) reduce surface runoff volume and retain sediments, pesticides and nutrients that are transported across them from adjacent crop-fields (CF). The ability of these strips to retain glyphosate has been demonstrated using experimental plots, but the spatial variability of that process is unknown. In this work, the influence of microtopography inside the RVS on the retention of glyphosate (and its major metabolite, AMPA), phosphorus and nitrogen were analyzed within a RVS of agricultural landscapes. Retention levels inside and outside preferential flow pathways (PFP) were compared under presence and absence of a tree stratum. Soil glyphosate + AMPA concentration within PFP was 88-fold higher than outside. Phosphorus and nitrogen soil concentrations, clay and bulk density were also higher inside than outside the PFP. The tree stratum did not modify soil concentration of glyphosate + AMPA, phosphorus, nitrogen, clay content, nor the morphometry of the PFP. Bulk density and clay content recorded in adjacent CF and in PFP, in addition to the high glyphosate, phosphorus and nitrogen concentrations in PFP soil, are consistent with a hydraulic connection between the CF and the PFP. These results contrast with some conclusions obtained from experimental studies under uniform plots and emphasize the importance of taking into account the genesis and structure of PFP in the design, evaluation and management of the filtering function of RVS.
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Asociación Argentina de Ecología
2019-12
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| Subjects: | Glifosato, Nutrientes, Vegetación Ripícola, Escorrentia, Servicios de los Ecosistemas, Glyphosate, Nutrients, Riparian Vegetation, Runoff, Ecosystem Services, |
| Online Access: | http://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/855/414 http://hdl.handle.net/20.500.12123/6493 |
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Glifosato Nutrientes Vegetación Ripícola Escorrentia Servicios de los Ecosistemas Glyphosate Nutrients Riparian Vegetation Runoff Ecosystem Services Glifosato Nutrientes Vegetación Ripícola Escorrentia Servicios de los Ecosistemas Glyphosate Nutrients Riparian Vegetation Runoff Ecosystem Services |
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Glifosato Nutrientes Vegetación Ripícola Escorrentia Servicios de los Ecosistemas Glyphosate Nutrients Riparian Vegetation Runoff Ecosystem Services Glifosato Nutrientes Vegetación Ripícola Escorrentia Servicios de los Ecosistemas Glyphosate Nutrients Riparian Vegetation Runoff Ecosystem Services Giaccio, Gustavo Carlos María Laterra, Pedro Aparicio, Virginia Carolina Costa, Jose Luis Puricelli, Marino Marcelo Glyphosate and nutrient retention in preferential flow pathways |
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Riparian vegetation strips (RVS) reduce surface runoff volume and retain sediments, pesticides and nutrients that are transported across them from adjacent crop-fields (CF). The ability of these strips to retain glyphosate has been demonstrated using experimental plots, but the spatial variability of that process is unknown. In this work, the influence of microtopography inside the RVS on the retention of glyphosate (and its major metabolite, AMPA), phosphorus and nitrogen were analyzed within a RVS of agricultural landscapes. Retention levels inside and outside preferential flow pathways (PFP) were compared under presence and absence of a tree stratum. Soil glyphosate + AMPA concentration within PFP was 88-fold higher than outside. Phosphorus and nitrogen soil concentrations, clay and bulk density were also higher inside than outside the PFP. The tree stratum did not modify soil concentration of glyphosate + AMPA, phosphorus, nitrogen, clay content, nor the morphometry of the PFP. Bulk density and clay content recorded in adjacent CF and in PFP, in addition to the high glyphosate, phosphorus and nitrogen concentrations in PFP soil, are consistent with a hydraulic connection between the CF and the PFP. These results contrast with some conclusions obtained from experimental studies under uniform plots and emphasize the importance of taking into account the genesis and structure of PFP in the design, evaluation and management of the filtering function of RVS. |
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info:ar-repo/semantics/artículo |
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Glifosato Nutrientes Vegetación Ripícola Escorrentia Servicios de los Ecosistemas Glyphosate Nutrients Riparian Vegetation Runoff Ecosystem Services |
| author |
Giaccio, Gustavo Carlos María Laterra, Pedro Aparicio, Virginia Carolina Costa, Jose Luis Puricelli, Marino Marcelo |
| author_facet |
Giaccio, Gustavo Carlos María Laterra, Pedro Aparicio, Virginia Carolina Costa, Jose Luis Puricelli, Marino Marcelo |
| author_sort |
Giaccio, Gustavo Carlos María |
| title |
Glyphosate and nutrient retention in preferential flow pathways |
| title_short |
Glyphosate and nutrient retention in preferential flow pathways |
| title_full |
Glyphosate and nutrient retention in preferential flow pathways |
| title_fullStr |
Glyphosate and nutrient retention in preferential flow pathways |
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Glyphosate and nutrient retention in preferential flow pathways |
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glyphosate and nutrient retention in preferential flow pathways |
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Asociación Argentina de Ecología |
| publishDate |
2019-12 |
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http://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/855/414 http://hdl.handle.net/20.500.12123/6493 |
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AT giacciogustavocarlosmaria glyphosateandnutrientretentioninpreferentialflowpathways AT laterrapedro glyphosateandnutrientretentioninpreferentialflowpathways AT apariciovirginiacarolina glyphosateandnutrientretentioninpreferentialflowpathways AT costajoseluis glyphosateandnutrientretentioninpreferentialflowpathways AT puricellimarinomarcelo glyphosateandnutrientretentioninpreferentialflowpathways |
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oai:localhost:20.500.12123-64932019-12-12T13:52:26Z Glyphosate and nutrient retention in preferential flow pathways Giaccio, Gustavo Carlos María Laterra, Pedro Aparicio, Virginia Carolina Costa, Jose Luis Puricelli, Marino Marcelo Glifosato Nutrientes Vegetación Ripícola Escorrentia Servicios de los Ecosistemas Glyphosate Nutrients Riparian Vegetation Runoff Ecosystem Services Riparian vegetation strips (RVS) reduce surface runoff volume and retain sediments, pesticides and nutrients that are transported across them from adjacent crop-fields (CF). The ability of these strips to retain glyphosate has been demonstrated using experimental plots, but the spatial variability of that process is unknown. In this work, the influence of microtopography inside the RVS on the retention of glyphosate (and its major metabolite, AMPA), phosphorus and nitrogen were analyzed within a RVS of agricultural landscapes. Retention levels inside and outside preferential flow pathways (PFP) were compared under presence and absence of a tree stratum. Soil glyphosate + AMPA concentration within PFP was 88-fold higher than outside. Phosphorus and nitrogen soil concentrations, clay and bulk density were also higher inside than outside the PFP. The tree stratum did not modify soil concentration of glyphosate + AMPA, phosphorus, nitrogen, clay content, nor the morphometry of the PFP. Bulk density and clay content recorded in adjacent CF and in PFP, in addition to the high glyphosate, phosphorus and nitrogen concentrations in PFP soil, are consistent with a hydraulic connection between the CF and the PFP. These results contrast with some conclusions obtained from experimental studies under uniform plots and emphasize the importance of taking into account the genesis and structure of PFP in the design, evaluation and management of the filtering function of RVS. Las franjas de vegetación ribereña (RVS) reducen el volumen del flujo de escorrentía superficial y retienen los sedimentos, los pesticidas y los nutrientes que esas aguas transportan desde los campos de cultivo (CF) adyacentes. La capacidad de estas franjas para retener el glifosato se demostró por medio de parcelas experimentales, aunque se desconoce la variabilidad espacial de ese proceso. En este trabajo se analizó la influencia de la microtopografía dentro de las RVS en la retención de glifosato (y su metabolito principal, AMPA), fósforo y nitrógeno dentro de las RVS de paisajes agropecuarios. Se compararon los niveles de retención dentro y fuera de las vías de flujo preferencial (PFP), en presencia y ausencia de un estrato arbóreo. La concentración de glifosato + AMPA en los suelos dentro de las PFP fue 88 veces mayor que fuera de la PFP. Las concentraciones de fósforo y nitrógeno, el contenido de arcilla y la densidad aparente también fueron más altos dentro que fuera de las PFP. La presencia del estrato arbóreo no modificó las concentraciones de glifosato + AMPA, ni de fósforo, ni de nitrógeno, ni el contenido de arcilla, como tampoco la morfometría de las PFP. La densidad aparente y el contenido de arcilla, registrados en los CF y en las PFP, junto con las concentraciones más altas de glifosato, fósforo y nitrógeno en los suelos de las PFP, son consistentes con una conexión hidráulica entre los CF y las PFP. Estos resultados contrastan con algunas conclusiones obtenidas a partir de estudios experimentales en parcelas uniformes y ponen en evidencia la importancia de tomar en cuenta génesis y estructura de las PFP en el diseño, evaluación y manejo de la función de filtrado de las RVS. EEA Barrow Fil: Giaccio, Gustavo Carlos María. Instituto Nacional de Tecnología Agropecuaria (INTA). Chacra Experimental Integrada Barrow; Argentina Fil: Laterra, Pedro. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires; Argentina. Fundación Bariloche, San Carlos de Bariloche; Argentina Fil: Aparicio, Virginia Carolina. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Costa, Jose Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Puricelli, Marino Marcelo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. 2019-12-12T13:48:20Z 2019-12-12T13:48:20Z 2019-12 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://ojs.ecologiaaustral.com.ar/index.php/Ecologia_Austral/article/view/855/414 http://hdl.handle.net/20.500.12123/6493 0327-5477 1667-782X eng info:eu-repo/semantics/openAccess application/pdf Asociación Argentina de Ecología Ecología Austral 29 (3) : 329-338. (2019) |