Delineation of management zones with soil apparent electrical conductivity to improve nutrient management
Site-specific management demands the identification of subfield regions with homogeneous characteristics (management zones). However, determining subfield areas is difficult because of complex correlations and the spatial variability of soil properties and nutrient concentrations, responsible for va...
| Main Authors: | , |
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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Elsevier
2019
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| Online Access: | https://www.sciencedirect.com/science/article/pii/S016816991300241X http://hdl.handle.net/20.500.12123/4799 https://doi.org/10.1016/j.compag.2013.09.014 |
| _version_ | 1855035386352369664 |
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| author | Peralta, Nahuel Raúl Costa, Jose Luis |
| author_browse | Costa, Jose Luis Peralta, Nahuel Raúl |
| author_facet | Peralta, Nahuel Raúl Costa, Jose Luis |
| author_sort | Peralta, Nahuel Raúl |
| collection | INTA Digital |
| description | Site-specific management demands the identification of subfield regions with homogeneous characteristics (management zones). However, determining subfield areas is difficult because of complex correlations and the spatial variability of soil properties and nutrient concentrations, responsible for variations in crop yields within the field. We evaluated whether apparent electrical conductivity (ECa) is a potential estimator of soil properties and nutrients, and a tool for the delimitation of homogeneous zones. Two field sites with several soil series were studied in southeastern Cordoba Province, Argentina. Soil properties and nutrient concentrations were compared with ECa using principal components (PC)- stepwise regression and ANOVA. The PC-stepwise regression showed that soil properties (pH, EC1:2.5, CEC, SOM) and nutrients (Na+2, Mg+2, Mn+2, Cu+2, Ca+2, Zn+2, Fe+2) are key loading factors to explain the ECa (R2 > 0.90). In contrast, K+, P, and ), content were not able to explain the ECa. The ANOVA showed that ECa measurements successfully delimited two homogeneous soil zones associated with the spatial distribution of soil properties and some nutrients (Na+2, Mg+2, Mn+2, Cu+2, Ca+2, Zn+2, Fe+2). These results suggest that field-scale ECa maps have the potential to design sampling zones to implement site-specific management strategies. |
| format | info:ar-repo/semantics/artículo |
| id | INTA4799 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | INTA47992019-04-01T14:16:37Z Delineation of management zones with soil apparent electrical conductivity to improve nutrient management Peralta, Nahuel Raúl Costa, Jose Luis Manejo del Cultivo Site Specific Nutrient Management Suelo Conductividad Eléctrica Agricultura de Precisión Nutrientes Crop Management Soil Electrical Conductivity Precision Agriculture Nutrients Site-specific management demands the identification of subfield regions with homogeneous characteristics (management zones). However, determining subfield areas is difficult because of complex correlations and the spatial variability of soil properties and nutrient concentrations, responsible for variations in crop yields within the field. We evaluated whether apparent electrical conductivity (ECa) is a potential estimator of soil properties and nutrients, and a tool for the delimitation of homogeneous zones. Two field sites with several soil series were studied in southeastern Cordoba Province, Argentina. Soil properties and nutrient concentrations were compared with ECa using principal components (PC)- stepwise regression and ANOVA. The PC-stepwise regression showed that soil properties (pH, EC1:2.5, CEC, SOM) and nutrients (Na+2, Mg+2, Mn+2, Cu+2, Ca+2, Zn+2, Fe+2) are key loading factors to explain the ECa (R2 > 0.90). In contrast, K+, P, and ), content were not able to explain the ECa. The ANOVA showed that ECa measurements successfully delimited two homogeneous soil zones associated with the spatial distribution of soil properties and some nutrients (Na+2, Mg+2, Mn+2, Cu+2, Ca+2, Zn+2, Fe+2). These results suggest that field-scale ECa maps have the potential to design sampling zones to implement site-specific management strategies. EEA Balcarce Fil: Peralta, Nahuel Raúl. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina Fil: Costa, Jose Luis. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina 2019-04-01T14:14:31Z 2019-04-01T14:14:31Z 2013-11 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion https://www.sciencedirect.com/science/article/pii/S016816991300241X http://hdl.handle.net/20.500.12123/4799 0168-1699 https://doi.org/10.1016/j.compag.2013.09.014 eng info:eu-repo/semantics/openAccess 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 Computers and Electronics in Agriculture 99 : 218-226 (November 2013) |
| spellingShingle | Manejo del Cultivo Site Specific Nutrient Management Suelo Conductividad Eléctrica Agricultura de Precisión Nutrientes Crop Management Soil Electrical Conductivity Precision Agriculture Nutrients Peralta, Nahuel Raúl Costa, Jose Luis Delineation of management zones with soil apparent electrical conductivity to improve nutrient management |
| title | Delineation of management zones with soil apparent electrical conductivity to improve nutrient management |
| title_full | Delineation of management zones with soil apparent electrical conductivity to improve nutrient management |
| title_fullStr | Delineation of management zones with soil apparent electrical conductivity to improve nutrient management |
| title_full_unstemmed | Delineation of management zones with soil apparent electrical conductivity to improve nutrient management |
| title_short | Delineation of management zones with soil apparent electrical conductivity to improve nutrient management |
| title_sort | delineation of management zones with soil apparent electrical conductivity to improve nutrient management |
| topic | Manejo del Cultivo Site Specific Nutrient Management Suelo Conductividad Eléctrica Agricultura de Precisión Nutrientes Crop Management Soil Electrical Conductivity Precision Agriculture Nutrients |
| url | https://www.sciencedirect.com/science/article/pii/S016816991300241X http://hdl.handle.net/20.500.12123/4799 https://doi.org/10.1016/j.compag.2013.09.014 |
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