Methane fluxes in soils with pasture covers in the North of Colombia
Introduction. Traditional livestock production systems in Colombia are based on the establishment of pastures on large tracts of land, which generate greenhouse gases such as methane. Objective. The objective of the present study was to monitor the monthly methane fluxes that occur in meadows with three soil covers and three levels of nitrogen fertilization. Materials and methods. Methane fluxes were monitored for a year from November 2014 to November 2015, on a Vertic Endoaquepts soil, placed in the middle valley of the Sinu river, Colombia. A full block design was used at random, arranged in divided plots, with two replications. The main plots constituted of two grasses (Brachiaria humidicola CIAT679 and Panicum maximum cv. Tanzania) and one with bare soil, and the subplots by three nitrogen fertilization levels (0, 150, 300 kg N ha-1). Additionally, soil physicochemical properties were evaluated. Results. During most of the year (rainy and dry season) methane oxidation occurred, associated with the loam texture and porosity of the soil in the study area, which allowed the free diffusion of gases in the soil. Correlation analyzes showed a close relationship between methane fluxes, porosity, moisture, soil bulk density, and ambient temperature, suggesting these parameters as the main factors that affect the monthly methane flow. Conclusions. Methane fluxes were independent of the type of plant material and nitrogen fertilization evaluated. These flows depended on the time of year (dry and rainy) and exhibited a negative annual balance in the study area, which suggests that these systems have the conditions to behave as methane sinks during most of the year.
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Universidad de Costa Rica
2020
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Espinosa Carvajal, Manuel Contreras Santos, Jose Luis Torres, Jorge Cadena Martínez Atencia, Judith del Carmen Jaramillo Barrios, Camilo Ignacio Hurtado, María del Pilar |
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Espinosa Carvajal, Manuel Contreras Santos, Jose Luis Torres, Jorge Cadena Martínez Atencia, Judith del Carmen Jaramillo Barrios, Camilo Ignacio Hurtado, María del Pilar Methane fluxes in soils with pasture covers in the North of Colombia |
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Espinosa Carvajal, Manuel Contreras Santos, Jose Luis Torres, Jorge Cadena Martínez Atencia, Judith del Carmen Jaramillo Barrios, Camilo Ignacio Hurtado, María del Pilar |
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Espinosa Carvajal, Manuel |
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Methane fluxes in soils with pasture covers in the North of Colombia |
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Methane fluxes in soils with pasture covers in the North of Colombia |
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Methane fluxes in soils with pasture covers in the North of Colombia |
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Methane fluxes in soils with pasture covers in the North of Colombia |
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Methane fluxes in soils with pasture covers in the North of Colombia |
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methane fluxes in soils with pasture covers in the north of colombia |
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Introduction. Traditional livestock production systems in Colombia are based on the establishment of pastures on large tracts of land, which generate greenhouse gases such as methane. Objective. The objective of the present study was to monitor the monthly methane fluxes that occur in meadows with three soil covers and three levels of nitrogen fertilization. Materials and methods. Methane fluxes were monitored for a year from November 2014 to November 2015, on a Vertic Endoaquepts soil, placed in the middle valley of the Sinu river, Colombia. A full block design was used at random, arranged in divided plots, with two replications. The main plots constituted of two grasses (Brachiaria humidicola CIAT679 and Panicum maximum cv. Tanzania) and one with bare soil, and the subplots by three nitrogen fertilization levels (0, 150, 300 kg N ha-1). Additionally, soil physicochemical properties were evaluated. Results. During most of the year (rainy and dry season) methane oxidation occurred, associated with the loam texture and porosity of the soil in the study area, which allowed the free diffusion of gases in the soil. Correlation analyzes showed a close relationship between methane fluxes, porosity, moisture, soil bulk density, and ambient temperature, suggesting these parameters as the main factors that affect the monthly methane flow. Conclusions. Methane fluxes were independent of the type of plant material and nitrogen fertilization evaluated. These flows depended on the time of year (dry and rainy) and exhibited a negative annual balance in the study area, which suggests that these systems have the conditions to behave as methane sinks during most of the year. |
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oai:portal.ucr.ac.cr:article383872023-06-16T13:45:47Z Methane fluxes in soils with pasture covers in the North of Colombia Flujos de metano en suelos con coberturas de pastos en el norte de Colombia Espinosa Carvajal, Manuel Contreras Santos, Jose Luis Torres, Jorge Cadena Martínez Atencia, Judith del Carmen Jaramillo Barrios, Camilo Ignacio Hurtado, María del Pilar greenhouse gases soil properties Panicum Brachiaria Livestock production gases de efecto invernadero propiedades del suelo Panicum Brachiaria producción ganadera Introduction. Traditional livestock production systems in Colombia are based on the establishment of pastures on large tracts of land, which generate greenhouse gases such as methane. Objective. The objective of the present study was to monitor the monthly methane fluxes that occur in meadows with three soil covers and three levels of nitrogen fertilization. Materials and methods. Methane fluxes were monitored for a year from November 2014 to November 2015, on a Vertic Endoaquepts soil, placed in the middle valley of the Sinu river, Colombia. A full block design was used at random, arranged in divided plots, with two replications. The main plots constituted of two grasses (Brachiaria humidicola CIAT679 and Panicum maximum cv. Tanzania) and one with bare soil, and the subplots by three nitrogen fertilization levels (0, 150, 300 kg N ha-1). Additionally, soil physicochemical properties were evaluated. Results. During most of the year (rainy and dry season) methane oxidation occurred, associated with the loam texture and porosity of the soil in the study area, which allowed the free diffusion of gases in the soil. Correlation analyzes showed a close relationship between methane fluxes, porosity, moisture, soil bulk density, and ambient temperature, suggesting these parameters as the main factors that affect the monthly methane flow. Conclusions. Methane fluxes were independent of the type of plant material and nitrogen fertilization evaluated. These flows depended on the time of year (dry and rainy) and exhibited a negative annual balance in the study area, which suggests that these systems have the conditions to behave as methane sinks during most of the year. Introducción. Los sistemas tradicionales de producción ganadera en Colombia se basan en el establecimiento de pasturas en grandes extensiones de tierra, que generan gases de efecto invernadero, como el metano. Objetivo. El objetivo del presente estudio fue vigilar los flujos mensuales de metano que se producen en las praderas con tres cubiertas de suelo y tres niveles de fertilización de nitrógeno. Materiales y métodos. Se realizó un monitoreo a los flujos de metano durante un año comprendido entre noviembre de 2014 y noviembre de 2015, en un suelo Vertic Endoaquepts, ubicado en el Valle medio del río Sinú, Colombia. Se usó un diseño de bloques completos al azar, en arreglo en parcelas divididas, con dos repeticiones. Las parcelas principales constituidas por dos gramíneas (Brachiaria humidicola CIAT679 y Panicum maximum cv. Tanzania) y una con suelo descubierto, y las subparcelas por tres niveles de fertilización nitrogenada (0, 150, 300 kg N ha-1). Adicionalmente, se evaluaron las propiedades fisicoquímicas del suelo. Resultados. Durante la mayor parte del año (época de lluvias y seca) ocurrió oxidación de metano, asociado con la textura franca y porosidad del suelo en el área de estudio, que permitió la difusión libre de gases en el suelo. Los análisis de correlación mostraron estrecha relación entre los flujos de metano, porosidad, humedad, densidad aparente del suelo y la temperatura ambiente, sugiriendo a estos parámetros como los principales factores que afectan el flujo mensual de metano. Conclusiones. Los flujos de metano fueron independientes del tipo material vegetal y de la fertilización nitrogenada evaluada. Estos flujos dependieron de la época del año (seca y lluviosa) y exhibieron un balance anual negativo en el área de estudio, lo que sugiere que estos sistemas tienen las condiciones para comportarse como sumideros de metano durante la mayor parte del año. Universidad de Costa Rica 2020-05-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article text/xml text/html application/pdf application/epub+zip audio/mpeg audio/mpeg https://revistas.ucr.ac.cr/index.php/agromeso/article/view/38387 10.15517/am.v31i2.38387 Agronomía Mesoamericana; 2020: Agronomía Mesoamericana: Vol. 31, Issue 2 (May-August); 291-309 Agronomía Mesoamericana; 2020: Agronomía Mesoamericana: Vol. 31, Nº 2 (mayo-agosto); 291-309 Agronomía Mesoamericana; 2020: Agronomía Mesoamericana: Vol. 31, Issue 2 (May-August); 291-309 2215-3608 1021-7444 spa eng https://revistas.ucr.ac.cr/index.php/agromeso/article/view/38387/42140 https://revistas.ucr.ac.cr/index.php/agromeso/article/view/38387/42016 https://revistas.ucr.ac.cr/index.php/agromeso/article/view/38387/42021 https://revistas.ucr.ac.cr/index.php/agromeso/article/view/38387/42022 https://revistas.ucr.ac.cr/index.php/agromeso/article/view/38387/42023 https://revistas.ucr.ac.cr/index.php/agromeso/article/view/38387/42025 |