Estimating lime requirements for tropical soils: Model comparison and development
Acid tropical soils may become more productive when treated with agricultural lime, but optimal lime rates have yet to be determined in many tropical regions. In these regions, lime rates can be estimated with lime requirement models based on widely available soil data. We reviewed seven of these mo...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2023
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/131379 |
| _version_ | 1855532337124605952 |
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| author | Aramburu Merlos, Fernando Silva, João Vasco Baudron, Frédéric Hijmans, Robert J. |
| author_browse | Aramburu Merlos, Fernando Baudron, Frédéric Hijmans, Robert J. Silva, João Vasco |
| author_facet | Aramburu Merlos, Fernando Silva, João Vasco Baudron, Frédéric Hijmans, Robert J. |
| author_sort | Aramburu Merlos, Fernando |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Acid tropical soils may become more productive when treated with agricultural lime, but optimal lime rates have yet to be determined in many tropical regions. In these regions, lime rates can be estimated with lime requirement models based on widely available soil data. We reviewed seven of these models and introduced a new model (LiTAS). We evaluated the models’ ability to predict the amount of lime needed to reach a target change in soil chemical properties with data from four soil incubation studies covering 31 soil types. Two foundational models, one targeting acidity saturation and the other targeting base saturation, were more accurate than the five models that were derived from them, while the LiTAS model was the most accurate. The models were used to estimate lime requirements for 303 African soil samples. We found large differences in the estimated lime rates depending on the target soil chemical property of the model. Therefore, an important first step in formulating liming recommendations is to clearly identify the soil property of interest and the target value that needs to be reached. While the LiTAS model can be useful for strategic research, more information on acidity-related problems other than aluminum toxicity is needed to comprehensively assess the benefits of liming. |
| format | Journal Article |
| id | CGSpace131379 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1313792025-11-06T13:07:32Z Estimating lime requirements for tropical soils: Model comparison and development Aramburu Merlos, Fernando Silva, João Vasco Baudron, Frédéric Hijmans, Robert J. chemicophysical properties limes tropical zones acid soils aluminium base saturation calcium carbonate Acid tropical soils may become more productive when treated with agricultural lime, but optimal lime rates have yet to be determined in many tropical regions. In these regions, lime rates can be estimated with lime requirement models based on widely available soil data. We reviewed seven of these models and introduced a new model (LiTAS). We evaluated the models’ ability to predict the amount of lime needed to reach a target change in soil chemical properties with data from four soil incubation studies covering 31 soil types. Two foundational models, one targeting acidity saturation and the other targeting base saturation, were more accurate than the five models that were derived from them, while the LiTAS model was the most accurate. The models were used to estimate lime requirements for 303 African soil samples. We found large differences in the estimated lime rates depending on the target soil chemical property of the model. Therefore, an important first step in formulating liming recommendations is to clearly identify the soil property of interest and the target value that needs to be reached. While the LiTAS model can be useful for strategic research, more information on acidity-related problems other than aluminum toxicity is needed to comprehensively assess the benefits of liming. 2023-04 2023-08-02T14:43:14Z 2023-08-02T14:43:14Z Journal Article https://hdl.handle.net/10568/131379 en Open Access application/pdf Elsevier Aramburu Merlos, F., Silva, J. V., Baudron, F., & Hijmans, R. J. (2023). Estimating lime requirements for tropical soils: Model comparison and development. Geoderma, 432, 116421. https://doi.org/10.1016/j.geoderma.2023.116421 |
| spellingShingle | chemicophysical properties limes tropical zones acid soils aluminium base saturation calcium carbonate Aramburu Merlos, Fernando Silva, João Vasco Baudron, Frédéric Hijmans, Robert J. Estimating lime requirements for tropical soils: Model comparison and development |
| title | Estimating lime requirements for tropical soils: Model comparison and development |
| title_full | Estimating lime requirements for tropical soils: Model comparison and development |
| title_fullStr | Estimating lime requirements for tropical soils: Model comparison and development |
| title_full_unstemmed | Estimating lime requirements for tropical soils: Model comparison and development |
| title_short | Estimating lime requirements for tropical soils: Model comparison and development |
| title_sort | estimating lime requirements for tropical soils model comparison and development |
| topic | chemicophysical properties limes tropical zones acid soils aluminium base saturation calcium carbonate |
| url | https://hdl.handle.net/10568/131379 |
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