Water table contribution to alfalfa water use in different environments of the Argentine Pampas
In the Argentine Pampas, although the water table is considered an important source of water supply for the alfalfa crop, it has not been previously quantified.The goal of this study was to estimate the water table contribution to alfalfa water use in several envi...
| Autores principales: | , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba
2019
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| Materias: | |
| Acceso en línea: | https://revistas.unc.edu.ar/index.php/agris/article/view/2648/1695 http://hdl.handle.net/20.500.12123/6597 |
| _version_ | 1855035704218746880 |
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| author | Dardanelli, Julio Luis Collino, Daniel |
| author_browse | Collino, Daniel Dardanelli, Julio Luis |
| author_facet | Dardanelli, Julio Luis Collino, Daniel |
| author_sort | Dardanelli, Julio Luis |
| collection | INTA Digital |
| description | In the Argentine Pampas, although the water table is considered an important source of water supply for the alfalfa crop, it has not been previously quantified.The goal of this study was to estimate the water table contribution to alfalfa water use in several environments, using an indirect method derived from water use efficiency determinations. Data sets were obtained from experiments conducted for four growing seasons at four locations: Anguil, Rafaela, General Villegas and Manfredi. Water table contribution was estimated considering the crop water use efficiency and the water use from the upper layers (rainfall supplied). Capillary contribution from the water table was assumed, if the dry matter/water use from the upper layers ratio was higher than a given water use efficiency threshold. When present, the water table contribution varied among locations between 15 and 25% of the crop water use, and was not related to the groundwater depth. A pooled exponential relationship between the seasonal water table contribution and seasonal effective rainfall was determined. |
| format | info:ar-repo/semantics/artículo |
| id | INTA6597 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba |
| publisherStr | Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba |
| record_format | dspace |
| spelling | INTA65972019-12-30T14:22:22Z Water table contribution to alfalfa water use in different environments of the Argentine Pampas Dardanelli, Julio Luis Collino, Daniel Agua Medicago Sativa Uso del Agua Eficacia en el Uso del Agua Medio Ambiente Water Water Use Water Use Efficiency Environment Groundwater Table Capa Freática Alfalfa Región Pampeana Lucerne In the Argentine Pampas, although the water table is considered an important source of water supply for the alfalfa crop, it has not been previously quantified.The goal of this study was to estimate the water table contribution to alfalfa water use in several environments, using an indirect method derived from water use efficiency determinations. Data sets were obtained from experiments conducted for four growing seasons at four locations: Anguil, Rafaela, General Villegas and Manfredi. Water table contribution was estimated considering the crop water use efficiency and the water use from the upper layers (rainfall supplied). Capillary contribution from the water table was assumed, if the dry matter/water use from the upper layers ratio was higher than a given water use efficiency threshold. When present, the water table contribution varied among locations between 15 and 25% of the crop water use, and was not related to the groundwater depth. A pooled exponential relationship between the seasonal water table contribution and seasonal effective rainfall was determined. En la Región Pampeana Argentina, se considera a la capa freática como una importante fuente de agua para la alfalfa, aún cuando su aporte no fue previamente cuantificado. El objetivo de este estudio fue estimar la contribución de la napa freática al consumo de la alfalfa en diferentes ambientes, usando un método indirecto que utiliza mediciones de la eficiencia en el uso del agua. Los datos fueron obtenidos de cuatro años de experimentos, en cuatro localidades: Anguil,Rafaela, General Villegas y Manfredi. La contribución de la capa freática fue estimada considerando la eficiencia en el uso del agua del cultivo, y el consumo de agua de las capas superiores de suelo, (recarga dependiente de lluvias). Se asumió una contribución de la capa freática al consumo del cultivo cuando la relación materia seca/consumo de agua de las capas superiores de suelo superó un valor umbral de eficiencia en el uso del agua. Este aporte varió entre localidades,entre 15 y 25% del agua consumida por el cultivo, y no estuvo relacionado con la profundidad de la capa freática. Se estableció una relación exponencial entre la contribución estacional de la capa freática y la precipitación efectiva estacional. EEA Manfredi Fil: Dardanelli, Julio Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Manfredi; Argentina Fil: Collino, Daniel. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Fisiología y Recursos Genéticos Vegetales; Argentina 2019-12-30T14:19:43Z 2019-12-30T14:19:43Z 2002 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://revistas.unc.edu.ar/index.php/agris/article/view/2648/1695 http://hdl.handle.net/20.500.12123/6597 0327-6244 1668-298X eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba AgriScientia 19 : 11-18 (2002) |
| spellingShingle | Agua Medicago Sativa Uso del Agua Eficacia en el Uso del Agua Medio Ambiente Water Water Use Water Use Efficiency Environment Groundwater Table Capa Freática Alfalfa Región Pampeana Lucerne Dardanelli, Julio Luis Collino, Daniel Water table contribution to alfalfa water use in different environments of the Argentine Pampas |
| title | Water table contribution to alfalfa water use in different environments of the Argentine Pampas |
| title_full | Water table contribution to alfalfa water use in different environments of the Argentine Pampas |
| title_fullStr | Water table contribution to alfalfa water use in different environments of the Argentine Pampas |
| title_full_unstemmed | Water table contribution to alfalfa water use in different environments of the Argentine Pampas |
| title_short | Water table contribution to alfalfa water use in different environments of the Argentine Pampas |
| title_sort | water table contribution to alfalfa water use in different environments of the argentine pampas |
| topic | Agua Medicago Sativa Uso del Agua Eficacia en el Uso del Agua Medio Ambiente Water Water Use Water Use Efficiency Environment Groundwater Table Capa Freática Alfalfa Región Pampeana Lucerne |
| url | https://revistas.unc.edu.ar/index.php/agris/article/view/2648/1695 http://hdl.handle.net/20.500.12123/6597 |
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