| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 11024790 | Geoderma | 2019 | 7 Pages |
Abstract
Vis-NIR spectroscopy allowed us to accurately estimate plant-available P, which depends not only on soil factors but also on the crop performance to take up P. Vis-NIR spectroscopy proved effective in identifying P, Ca, Mg, K, and Fe responsive sites. Precise estimation of plant-available P was a result of accurately predicting soil properties governing P availability to plants by Vis-NIR spectroscopy. In addition, this technique provided accurate predictions of soil properties influencing the dynamics of applied P and K fertilizer, which can be useful to adapt fertilization practices to soil properties. Vis-NIR spectroscopy can therefore enable a qualitative leap to cost-effective integral assessment of soil fertility by providing accurate predictions of soil functioning rather than mere estimates of availability indices, thereby facilitating more sustainable use of resources in agriculture.
Keywords
FecASNV-DTVRAVisible and Near infraredSECVPBCSPTNIRSVis–NIRCCECECSOMIronstandard deviationstandard error of cross-validationNutrient availabilityTAPXRFcation exchange capacitySoil functioningPhosphorusX-ray fluorescenceSoil organic matterVariable rate applicationNear Infrared spectroscopyPotassiumCaP
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Earth-Surface Processes
Authors
Ramiro Recena, VÃctor M. Fernández-Cabanás, Antonio Delgado,