| Full text | |
| Author(s): |
Camargo, Livia Arantes
[1]
;
do Amaral, Lucas Rios
[2]
;
dos Reis, Aliny Aparecida
[1]
;
Brasco, Thiago Luis
[2]
;
Graziano Magalhaes, Paulo Sergio
[1, 2]
Total Authors: 5
|
| Affiliation: | [1] Univ Estadual Campinas, Interdisciplinary Ctr Energy Planning NIPE, UNICAMP, BR-13083896 Campinas, SP - Brazil
[2] Univ Estadual Campinas, Sch Agr Engn FEAGRI, UNICAMP, Campinas - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | SOIL USE AND MANAGEMENT; v. 38, n. 1 NOV 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
Detailed mapping of soil attributes is often not viable due to the high cost of wet-chemical laboratory analysis, which requires a large number of samples. Thus, we evaluated whether the prediction of SOC contents through field-specific diffuse reflectance spectroscopy (DRS) can increase the amount of samples available to SOC mapping through data interpolation. For such, we tested the performance of the partial least squares regression (PLSR), random forest (RF) and gradient boosting tree (GBT) algorithms to model and predict SOC. The field-specific calibration approach proposed here proved to be suitable for predicting SOC content on soil samples, reducing the dependence on wet-chemical soil laboratory analyses for mapping. With such SOC content prediction, the higher amount of samples to be used for spatial interpolation can be increased, leading to more accurate SOC maps that can be applied for site-specific management. (AU) | |
| FAPESP's process: | 18/24985-0 - Methodology for mapping and monitoring different pasture-based Livestock management and Mixed Crop-Livestock systems with remote sensing |
| Grantee: | Aliny Aparecida dos Reis |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 17/50205-9 - Monitoring integrated crop-livestock systems through remote sensing and precision agriculture for more sustainable production - towards low carbon agriculture |
| Grantee: | Paulo Sergio Graziano Magalhães |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 18/24493-0 - Precision agriculture in integrated crop-livestock systems |
| Grantee: | Livia Arantes Camargo |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |