In-field soil spectroscopy in Vis–NIR range for fast and reliable soil analysis: A review

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dc.contributor.authorPiccini, Chiara
dc.contributor.authorMetzger, Konrad
dc.contributor.authorDebaene, Guillaume
dc.contributor.authorStenberg, Bo
dc.contributor.authorGötzinger, Sophia
dc.contributor.authorBoru˚ vka, Luboˇs
dc.contributor.authorSandén, Taru
dc.contributor.authorBragazza, Luca
dc.contributor.authorLiebisch, Frank
dc.date.accessioned2024-04-29T09:30:43Z
dc.date.available2024-04-29T09:30:43Z
dc.date.issued2024
dc.description.abstractIn-field soil spectroscopy represents a promising opportunity for fast soil analysis, allowing the prediction of several soil properties from one spectral reading representing one soil sample. This facilitates data acquisition from large amounts of samples through its rapidity and the absence of required chemical processing. This is of particular interest in agriculture, where the chance to retrieve information from soils directly in the field is very appealing. This review is focused on infield visible to near infrared (Vis–NIR) spectroscopy (350–2500 nm), aimed at analysing soils directly in the field through proximal sensing. The main scope was to explore the available knowledge to identify existing gaps limiting the reliability and robustness of in-field measurement, to foster future research and help transition towards the practical application of this technology. For this purpose, a literature review was performed, and surveyed information encompassed sensor range, carrier platforms in use, sensor type, distance to the soil sample, measurement methodology, measured soil properties and soil management, among many others. From this, we derived a list of tools in use with their spectral measurement properties, including the potential cross-calibration with soil spectral libraries from laboratory spectroscopy of soil samples and potential measured target soil properties. Different instruments and sensors used to measure at varying wavelength ranges and with different spectral qualities are available for a large range of prices. The most frequently analysed soil properties included soil carbon contents (soil organic carbon, soil organic matter, total carbon), texture (clay, silt, sand), total nitrogen, pH and cation exchange capacity. Future perspectives comprise the implementation of larger databases, including different instruments and cropping systems as well as methodologies combining existing knowledge regarding laboratory spectroscopy with in-field methods. The authors highlight the need for a broadly accepted measurement protocol for in-field soil spectroscopy, fostering harmonization and standardization and consequently a more robust application in practice.
dc.description.sponsorshipProbeField project (https://ejpsoil.eu/soil-research/probefield), of the EJP SOIL funded by the European Horizon 2020 Framework Programme, Grant/Award Number: 862695
dc.identifier.citationEuropean Journal of Soil Science, 2024, Vol. 75: e13481.
dc.identifier.doi10.1111/ejss.13481
dc.identifier.issn1365-2389 (Online) 1351-0754 (Print)
dc.identifier.urihttps://bc.iung.pl/handle/123456789/1221
dc.language.isoen
dc.publisherJohn Wiley & Sons
dc.subjectin-field measurements
dc.subjectproximal sensing
dc.subjectsensors
dc.subjectsoil spectral libraries
dc.subjectsoil spektroskopy
dc.subjectVis–NIR
dc.titleIn-field soil spectroscopy in Vis–NIR range for fast and reliable soil analysis: A review
dc.typeArticle
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