Nitrogen mineralization potential depletion in pampas (Argentina) croplands following conversion from native grasslands
In the Argentinean Pampas, where Phaeozems soils are predominant, the conversion of native grasslands into croplands has negatively affected soil fertility and health. Nitrogen (N) mineralized during an anaerobic incubation (Nan), an estimator of N potential mineralization, is frequently used to eva...
| Main Authors: | , , , , , , , , , , |
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| Format: | Artículo |
| Language: | Inglés |
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Elsevier
2025
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12123/21600 https://www.sciencedirect.com/science/article/pii/S2352009425000100 https://doi.org/10.1016/j.geodrs.2025.e00925 |
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| author | Wyngaard, Nicolás Crespo, Cecilia García, Gisela Vanesa Reussi Calvo, Nahuel Ignacio Rivero, Camila Carciochi, Walter Daniel Eyherabide, Mercedes Larrea, Gaston Emiliano Angelini, Hernán Pablo Barbieri, Pablo Sainz Rozas, Hernan Rene |
| author_browse | Angelini, Hernán Pablo Barbieri, Pablo Carciochi, Walter Daniel Crespo, Cecilia Eyherabide, Mercedes García, Gisela Vanesa Larrea, Gaston Emiliano Reussi Calvo, Nahuel Ignacio Rivero, Camila Sainz Rozas, Hernan Rene Wyngaard, Nicolás |
| author_facet | Wyngaard, Nicolás Crespo, Cecilia García, Gisela Vanesa Reussi Calvo, Nahuel Ignacio Rivero, Camila Carciochi, Walter Daniel Eyherabide, Mercedes Larrea, Gaston Emiliano Angelini, Hernán Pablo Barbieri, Pablo Sainz Rozas, Hernan Rene |
| author_sort | Wyngaard, Nicolás |
| collection | INTA Digital |
| description | In the Argentinean Pampas, where Phaeozems soils are predominant, the conversion of native grasslands into croplands has negatively affected soil fertility and health. Nitrogen (N) mineralized during an anaerobic incubation (Nan), an estimator of N potential mineralization, is frequently used to evaluate soil health. The objectives of our study were to determine the magnitude of the Nan depletion caused by agriculture (dNan), and to assess the relative contribution of land use, climate, and soil properties on dNan in the Argentinean Pampas. We conducted a soil survey at 409 sites distributed throughout the Argentinean Pampas region. At each site, pairwise samples (0–20 cm) were collected from uncultivated and agricultural soils. At each site, different edaphic, climatic, and productive variables were evaluated. The direct and indirect effect of different variables over dNan was evaluated through a path analysis. The conversion of native grasslands from the Argentinean Pampas into croplands generally decreased Nan values, with Nan reductions ranging from 0 to 216 mg kg−1 (representing 0 to 79 % of the Nan value at uncultivated soils). The magnitude of the Nan depletion was influenced by edaphic variables [i.e. original Nan value (Nan at uncropped soils), soil organic matter depletion, clay content] and climatic variables (i.e. precipitation). These four variables explained 85 % of the dNan variability. From the path analysis, it was determined that soils with greater original Nan values (r = 0.89) and greater soil organic matter depletion (r = 0.65) presented larger dNan, while increases in clay content (r = 0.30) or mean annual precipitation (r = 0.25) resulted in lower dNan values. The identification of the drivers of Nan depletion can aid in the classification of areas with greater vulnerability to soil degradation and in the development of models to predict Nan depletion in soils. Such models would hold significant potential as tools for policymakers and program developers engaged in the formulation and implementation of targeted interventions aimed at halting or reversing this degradation process. |
| format | Artículo |
| id | INTA21600 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA216002025-03-10T10:25:04Z Nitrogen mineralization potential depletion in pampas (Argentina) croplands following conversion from native grasslands Wyngaard, Nicolás Crespo, Cecilia García, Gisela Vanesa Reussi Calvo, Nahuel Ignacio Rivero, Camila Carciochi, Walter Daniel Eyherabide, Mercedes Larrea, Gaston Emiliano Angelini, Hernán Pablo Barbieri, Pablo Sainz Rozas, Hernan Rene Phaeozems Soil Edaphic Factors Climatic Factors Nitrogen Mineralization Agriculture Suelo Factores Edáficos Factores Climáticos Mineralización del Nitrógeno Agricultura Argentina In the Argentinean Pampas, where Phaeozems soils are predominant, the conversion of native grasslands into croplands has negatively affected soil fertility and health. Nitrogen (N) mineralized during an anaerobic incubation (Nan), an estimator of N potential mineralization, is frequently used to evaluate soil health. The objectives of our study were to determine the magnitude of the Nan depletion caused by agriculture (dNan), and to assess the relative contribution of land use, climate, and soil properties on dNan in the Argentinean Pampas. We conducted a soil survey at 409 sites distributed throughout the Argentinean Pampas region. At each site, pairwise samples (0–20 cm) were collected from uncultivated and agricultural soils. At each site, different edaphic, climatic, and productive variables were evaluated. The direct and indirect effect of different variables over dNan was evaluated through a path analysis. The conversion of native grasslands from the Argentinean Pampas into croplands generally decreased Nan values, with Nan reductions ranging from 0 to 216 mg kg−1 (representing 0 to 79 % of the Nan value at uncultivated soils). The magnitude of the Nan depletion was influenced by edaphic variables [i.e. original Nan value (Nan at uncropped soils), soil organic matter depletion, clay content] and climatic variables (i.e. precipitation). These four variables explained 85 % of the dNan variability. From the path analysis, it was determined that soils with greater original Nan values (r = 0.89) and greater soil organic matter depletion (r = 0.65) presented larger dNan, while increases in clay content (r = 0.30) or mean annual precipitation (r = 0.25) resulted in lower dNan values. The identification of the drivers of Nan depletion can aid in the classification of areas with greater vulnerability to soil degradation and in the development of models to predict Nan depletion in soils. Such models would hold significant potential as tools for policymakers and program developers engaged in the formulation and implementation of targeted interventions aimed at halting or reversing this degradation process. EEA Balcarce Fil: Wyngaard, Nicolás. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: Wyngaard, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Crespo, Cecilia. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: Crespo, Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: García, Gisela Vanesa. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: García, Gisela Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Reussi Calvo, Nahuel Ignacio. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: Reussi Calvo, Nahuel Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Rivero, Camila. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: Carciochi, Walter Daniel. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: Carciochi, Walter Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Eyherabide, Mercedes. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: Eyherabide, Mercedes. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Larrea, Gastón. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Angelini, Hernán. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Barbieri, Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Barbieri, Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Sainz Rozas, Hernán Rene. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: Sainz Rozas, Hernán Rene. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina Fil: Sainz Rozas, Hernán Rene. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2025-03-10T10:10:08Z 2025-03-10T10:10:08Z 2025-03 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/21600 https://www.sciencedirect.com/science/article/pii/S2352009425000100 2352-0094 (online) https://doi.org/10.1016/j.geodrs.2025.e00925 eng info:eu-repograntAgreement/INTA/2023-PD-L03-I093, Fertilidad química, física y biológica del suelo: estrategias para mitigar y restaurar procesos de degradación info:eu-repo/semantics/restrictedAccess 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 Elsevier Geoderma Regional 40 : e00925 (March 2025) |
| spellingShingle | Phaeozems Soil Edaphic Factors Climatic Factors Nitrogen Mineralization Agriculture Suelo Factores Edáficos Factores Climáticos Mineralización del Nitrógeno Agricultura Argentina Wyngaard, Nicolás Crespo, Cecilia García, Gisela Vanesa Reussi Calvo, Nahuel Ignacio Rivero, Camila Carciochi, Walter Daniel Eyherabide, Mercedes Larrea, Gaston Emiliano Angelini, Hernán Pablo Barbieri, Pablo Sainz Rozas, Hernan Rene Nitrogen mineralization potential depletion in pampas (Argentina) croplands following conversion from native grasslands |
| title | Nitrogen mineralization potential depletion in pampas (Argentina) croplands following conversion from native grasslands |
| title_full | Nitrogen mineralization potential depletion in pampas (Argentina) croplands following conversion from native grasslands |
| title_fullStr | Nitrogen mineralization potential depletion in pampas (Argentina) croplands following conversion from native grasslands |
| title_full_unstemmed | Nitrogen mineralization potential depletion in pampas (Argentina) croplands following conversion from native grasslands |
| title_short | Nitrogen mineralization potential depletion in pampas (Argentina) croplands following conversion from native grasslands |
| title_sort | nitrogen mineralization potential depletion in pampas argentina croplands following conversion from native grasslands |
| topic | Phaeozems Soil Edaphic Factors Climatic Factors Nitrogen Mineralization Agriculture Suelo Factores Edáficos Factores Climáticos Mineralización del Nitrógeno Agricultura Argentina |
| url | http://hdl.handle.net/20.500.12123/21600 https://www.sciencedirect.com/science/article/pii/S2352009425000100 https://doi.org/10.1016/j.geodrs.2025.e00925 |
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