Actividad microbiológica de un suelo sometido a distintos usos y su relación con variables físico- químicas
Much of the microbial processes that contribute to agroecosystems fertility and nutrient cycling take place in the soil. This nutrient cycling depends critically on the soils' microbiological activity, which is, in turn, mediated by the structure and functioning of the edaphic biota. In this co...
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| Formato: | Online |
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Facultad de Ciencias Agrarias-UNCuyo
2022
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| Acceso en línea: | https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/5630 |
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I11-R107article-5630 |
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Universidad Nacional de Cuyo |
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Revistas en línea |
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Revistas en línea |
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Revista de la Facultad de Ciencias Agrarias |
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Revista de la Facultad de Ciencias Agrarias |
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I-11 |
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R-107 |
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spa |
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Online |
| author |
Di Ciocco, Cesar Augusto Sandler, Rosana Veronica Falco, Liliana Beatriz Coviella, Carlos Eduardo |
| spellingShingle |
Di Ciocco, Cesar Augusto Sandler, Rosana Veronica Falco, Liliana Beatriz Coviella, Carlos Eduardo Actividad microbiológica de un suelo sometido a distintos usos y su relación con variables físico- químicas actividad nitrogenasa respiración edáfica propiedades físico-químicas sustentabilidad agroecosistemas nitrogenase activity soil respiration physico-chemical properties sustainability agroecosystems |
| author_facet |
Di Ciocco, Cesar Augusto Sandler, Rosana Veronica Falco, Liliana Beatriz Coviella, Carlos Eduardo |
| author_sort |
Di Ciocco, Cesar Augusto |
| title |
Actividad microbiológica de un suelo sometido a distintos usos y su relación con variables físico- químicas |
| title_short |
Actividad microbiológica de un suelo sometido a distintos usos y su relación con variables físico- químicas |
| title_full |
Actividad microbiológica de un suelo sometido a distintos usos y su relación con variables físico- químicas |
| title_fullStr |
Actividad microbiológica de un suelo sometido a distintos usos y su relación con variables físico- químicas |
| title_full_unstemmed |
Actividad microbiológica de un suelo sometido a distintos usos y su relación con variables físico- químicas |
| title_sort |
microbiological activity of a soil under different uses and its relation with physico-chemical variables |
| description |
Much of the microbial processes that contribute to agroecosystems fertility and nutrient cycling take place in the soil. This nutrient cycling depends critically on the soils' microbiological activity, which is, in turn, mediated by the structure and functioning of the edaphic biota. In this context, the objective of this work was to determine if the microbial activity can be a good indicator of soil use intensity, by analyzing: 1- if differences in soil use intensity are related to differences in microbiological activity estimated through soil respiration and enzymatic activity, and 2- the possible relationships between these variables and physico-chemical variables. Samplings were conducted every three months between 2008 and 2010 in fields in the Buenos Aires province on argiudoll soils under different land uses: 1- Intensive continuous agriculture, 2- Recent agriculture and 3- Naturalized grasslands. Three sampling sites (replicates) were selected for soil use and five samples were collected per replicate and date. Microbial activity was then assessed by measuring soil respiration and nitrogenase enzyme activity, and physico-chemical variables were measured as well. Data were analyzed by means of a Kruskal-Wallis test (P < 0.05). A non- parametric analysis was performed (Spearman multiple correlation) between the physicochemical and microbiological variables. The different uses of the same soil showed significant differences in microbiological activity. Soil respiration was higher in the naturalized grasslands and lower in the continuous agricultural system. Nitrogenase activity was higher in the naturalized grasslands, intermediate in the recent agricultural system and lower in the continuous agriculture fields. The physico-chemical variables measured were less consistent in detecting differences among soil uses. Significant correlations were detected between microbiological activity and some of the physico-chemical variables measured. The results show that microbiological activity can be useful to detect differences in soil use intensity. |
| publisher |
Facultad de Ciencias Agrarias-UNCuyo |
| publishDate |
2022 |
| url |
https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/5630 |
| topic |
actividad nitrogenasa respiración edáfica propiedades físico-químicas sustentabilidad agroecosistemas nitrogenase activity soil respiration physico-chemical properties sustainability agroecosystems |
| topic_facet |
actividad nitrogenasa respiración edáfica propiedades físico-químicas sustentabilidad agroecosistemas nitrogenase activity soil respiration physico-chemical properties sustainability agroecosystems |
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I11-R107article-56302022-02-16T18:06:14Z Microbiological activity of a soil under different uses and its relation with physico-chemical variables Actividad microbiológica de un suelo sometido a distintos usos y su relación con variables físico- químicas Di Ciocco, Cesar Augusto Sandler, Rosana Veronica Falco, Liliana Beatriz Coviella, Carlos Eduardo actividad nitrogenasa respiración edáfica propiedades físico-químicas sustentabilidad agroecosistemas nitrogenase activity soil respiration physico-chemical properties sustainability agroecosystems Much of the microbial processes that contribute to agroecosystems fertility and nutrient cycling take place in the soil. This nutrient cycling depends critically on the soils' microbiological activity, which is, in turn, mediated by the structure and functioning of the edaphic biota. In this context, the objective of this work was to determine if the microbial activity can be a good indicator of soil use intensity, by analyzing: 1- if differences in soil use intensity are related to differences in microbiological activity estimated through soil respiration and enzymatic activity, and 2- the possible relationships between these variables and physico-chemical variables. Samplings were conducted every three months between 2008 and 2010 in fields in the Buenos Aires province on argiudoll soils under different land uses: 1- Intensive continuous agriculture, 2- Recent agriculture and 3- Naturalized grasslands. Three sampling sites (replicates) were selected for soil use and five samples were collected per replicate and date. Microbial activity was then assessed by measuring soil respiration and nitrogenase enzyme activity, and physico-chemical variables were measured as well. Data were analyzed by means of a Kruskal-Wallis test (P < 0.05). A non- parametric analysis was performed (Spearman multiple correlation) between the physicochemical and microbiological variables. The different uses of the same soil showed significant differences in microbiological activity. Soil respiration was higher in the naturalized grasslands and lower in the continuous agricultural system. Nitrogenase activity was higher in the naturalized grasslands, intermediate in the recent agricultural system and lower in the continuous agriculture fields. The physico-chemical variables measured were less consistent in detecting differences among soil uses. Significant correlations were detected between microbiological activity and some of the physico-chemical variables measured. The results show that microbiological activity can be useful to detect differences in soil use intensity. Gran parte de los procesos microbianos que contribuyen a la fertilidad de los agroecosistemas y el ciclado de nutrientes ocurren en el suelo. Este ciclado de nutrientes depende críticamente de la actividad microbiológica de los suelos, la cual a su vez está mediada por la estructura y funcionamiento de la microbiota edáfica. En este contexto, el objetivo de este trabajo, fue determinar si la actividad microbiana puede ser buena indicadora de la intensidad de uso del suelo, analizando: 1- si las diferencias en la intensidad de uso del suelo se relacionan con diferencias en la actividad microbiológica estimada a través de la respiración edáfica y la actividad enzimática; y 2- las posibles relaciones entre estas variables microbiológicas y las variables físico-químicas. Entre 2008 y 2010 se realizaron muestreos trimestrales en campos de la provincia de Buenos Aires en suelos Argiudoles bajo diferentes usos: 1- Agricultura intensiva continua, 2- Agricultura reciente, y 3- Pastizales naturalizados. Tres sitios de muestreo se seleccionaron como réplicas para cada uso de suelo, con 5 muestras por fecha y réplica. La actividad microbiana se evaluó midiendo la respiración edáfica y la actividad de las enzimas nitrogenasas y se analizaron variables físico- químicas. Tanto las variables microbiológicas como las físico-químicas se analizaron mediante Kruskall-Wallis (P < 0,05). Se exploró la asociación entre las variables físico-químicas y microbiológicas aplicando el coeficiente de correlación no paramétrico (Spearman). Los distintos usos de un mismo suelo presentaron diferencias en la actividad microbiológica. La respiración edáfica fue significativamente mayor en los pastizales naturalizados que en los sistemas con agricultura. La actividad nitrogenasa resultó significativamente mayor en los pastizales naturalizados respecto de la agricultura continua y no se diferenció significativamente de la agricultura reciente. Las variables físico- químicas resultaron menos consistentes en detectar diferencias entre usos. Se detectaron correlaciones significativas entre la actividad microbiológica y algunas de las variables físico-químicas. Los resultados muestran que la actividad microbiológica puede resultar útil para diferenciar intensidades de usos de suelo. Facultad de Ciencias Agrarias-UNCuyo 2022-02-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/5630 Revista de la Facultad de Ciencias Agrarias UNCuyo; Vol. 46 No. 1 (2014): January-June; 73-85 Revista de la Facultad de Ciencias Agrarias UNCuyo; Vol. 46 Núm. 1 (2014): Enero-Junio; 73-85 1853-8665 0370-4661 spa https://revistas.uncu.edu.ar/ojs3/index.php/RFCA/article/view/5630/4328 https://creativecommons.org/licenses/by-nc-sa/3.0/deed.es |
