Environmental controls of lucerne (Medicago sativa L.) growth across a climatic and edaphic gradient
Lucerne is one of the most valuable forage species because of its high productivity and nutritional traits. However, the knowledge of spatio-temporal variability and environmental controls of its growth generated from the simultaneous study of several sites and throughout several years is extremely ...
| Main Authors: | , , |
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| Format: | Online |
| Language: | spa |
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Facultad de Ciencias Agropecuarias
2017
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| Online Access: | https://revistas.unc.edu.ar/index.php/agris/article/view/19646 |
| _version_ | 1802315595832623104 |
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| author | Druille, M. Deregibus, V. Garbulsky, M. F. |
| author_facet | Druille, M. Deregibus, V. Garbulsky, M. F. |
| author_sort | Druille, M. |
| collection | Portal de Revistas |
| description | Lucerne is one of the most valuable forage species because of its high productivity and nutritional traits. However, the knowledge of spatio-temporal variability and environmental controls of its growth generated from the simultaneous study of several sites and throughout several years is extremely scarce. Five-year biomass data were analyzed from four rain fed sites located across a climatic and edaphic gradient in Argentina. The aims proposed were to characterize annual and seasonal lucerne growth, to analyze environmental controls of spatial and emporal growth, and to compare water use efficiency (WUE) among sites. Annual growth differed significantly among sites, ranging between 7,514 and 14,262 kg DM/ha. This range at the spatial scale was mainly explained by variations in annual rainfall and WUE among sites. Seasonal growth depended on incident radiation and actual evapotranspiration. Interannual variability of lucerne growth was explained by precipitation occurred during the growing season in the driest sites, on sandy soils with less water retention capacity. Knowing the sources of variability of lucerne growth, would allow developing more efficient livestock management due to less uncertainty on the forage production dynamics. |
| format | Online |
| id | oai:ojs.revistas.unc.edu.ar:article-19646 |
| institution | Universidad Nacional de Cordoba |
| language | spa |
| publishDate | 2017 |
| publisher | Facultad de Ciencias Agropecuarias |
| record_format | ojs |
| spelling | oai:ojs.revistas.unc.edu.ar:article-196462020-03-31T13:05:46Z Environmental controls of lucerne (Medicago sativa L.) growth across a climatic and edaphic gradient Controles ambientales del crecimiento de alfalfa (MedicagosativaL.) a lo largo de un gradiente climático y edáfico Druille, M. Deregibus, V. Garbulsky, M. F. Propiedades edáficas eficiencia en el uso del agua producción de forraje clima. Soil properties water use efficiency forage production climate. Lucerne is one of the most valuable forage species because of its high productivity and nutritional traits. However, the knowledge of spatio-temporal variability and environmental controls of its growth generated from the simultaneous study of several sites and throughout several years is extremely scarce. Five-year biomass data were analyzed from four rain fed sites located across a climatic and edaphic gradient in Argentina. The aims proposed were to characterize annual and seasonal lucerne growth, to analyze environmental controls of spatial and emporal growth, and to compare water use efficiency (WUE) among sites. Annual growth differed significantly among sites, ranging between 7,514 and 14,262 kg DM/ha. This range at the spatial scale was mainly explained by variations in annual rainfall and WUE among sites. Seasonal growth depended on incident radiation and actual evapotranspiration. Interannual variability of lucerne growth was explained by precipitation occurred during the growing season in the driest sites, on sandy soils with less water retention capacity. Knowing the sources of variability of lucerne growth, would allow developing more efficient livestock management due to less uncertainty on the forage production dynamics. La alfalfa es una de las especies forrajeras más valoradas por su alta productividad y características nutritivas. Sin embargo, el conocimiento de la variabilidad espacio-temporal y los controles ambientales del crecimiento generado a partir del estudio simultáneo de varios sitios y años es extremadamenteescaso.En este trabajo se analizaron cinco años de datos de biomasa de cuatro sitios de secano ubicados a lo largo de un gradiente climático y edáfico en Argentina. Los objetivos propuestos fueron: caracterizar el crecimiento anual y estacional de la alfalfa, analizar los controles ambientales del crecimiento a escala espacial y temporal y comparar la eficiencia en el uso del agua (EUA) entre sitios. El crecimiento anual difirió espacialmente, oscilando entre 7.514 y 14.262 kgMS/ha. Esta variabilidad fue principalmente explicada por variaciones en las precipitaciones anuales y la EUA. El crecimiento estacional dependió de la radiación incidente y la evapotranspiración real. La variabilidad interanual del crecimiento fue explicada por la precipitación ocurrida durante la estación de crecimiento en los sitios secos, con suelos arenosos de baja capacidad de retención hídrica. Conocer las fuentes de variación en el crecimiento de alfalfa permitirá el desarrollo de prácticas de manejo ganadero más eficientes debido a la menor incertidumbre en la dinámica de producción forrajera. Facultad de Ciencias Agropecuarias 2017-12-27 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.unc.edu.ar/index.php/agris/article/view/19646 AgriScientia; Vol. 34 No. 2 (2017); 13-23 AgriScientia; Vol. 34 Núm. 2 (2017); 13-23 1668-298X 10.31047/1668.298x.v34.n2 spa https://revistas.unc.edu.ar/index.php/agris/article/view/19646/19377 https://revistas.unc.edu.ar/index.php/agris/article/view/19646/29316 |
| spellingShingle | Propiedades edáficas eficiencia en el uso del agua producción de forraje clima. Soil properties water use efficiency forage production climate. Druille, M. Deregibus, V. Garbulsky, M. F. Environmental controls of lucerne (Medicago sativa L.) growth across a climatic and edaphic gradient |
| title | Environmental controls of lucerne (Medicago sativa L.) growth across a climatic and edaphic gradient |
| title_alt | Controles ambientales del crecimiento de alfalfa (MedicagosativaL.) a lo largo de un gradiente climático y edáfico |
| title_full | Environmental controls of lucerne (Medicago sativa L.) growth across a climatic and edaphic gradient |
| title_fullStr | Environmental controls of lucerne (Medicago sativa L.) growth across a climatic and edaphic gradient |
| title_full_unstemmed | Environmental controls of lucerne (Medicago sativa L.) growth across a climatic and edaphic gradient |
| title_short | Environmental controls of lucerne (Medicago sativa L.) growth across a climatic and edaphic gradient |
| title_sort | environmental controls of lucerne medicago sativa l growth across a climatic and edaphic gradient |
| topic | Propiedades edáficas eficiencia en el uso del agua producción de forraje clima. Soil properties water use efficiency forage production climate. |
| topic_facet | Propiedades edáficas eficiencia en el uso del agua producción de forraje clima. Soil properties water use efficiency forage production climate. |
| url | https://revistas.unc.edu.ar/index.php/agris/article/view/19646 |
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