Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/40805
Title: Elemental analysis of Cerrado agricultural soils via portable X-ray fluorescence spectrometry: Inferences for soil fertility assessment
Keywords: Spectroscopic methods
Proximal sensors
Soil analysis
Solos agrícolas
Fertilidade do solo
Métodos espectroscópicos
Sensores proximais
Issue Date: Nov-2019
Publisher: Elsevier
Citation: LIMA, T. M. de et al. Elemental analysis of Cerrado agricultural soils via portable X-ray fluorescence spectrometry: Inferences for soil fertility assessment. Geoderma, [S.I.], v. 353, p. 264-272, Nov. 2019.
Abstract: Conventional soil chemical analyses are time-consuming and laboratory-based. Spectroscopic techniques have been introduced to make soil measurements more rapid and cost-effective. While portable X-ray fluorescence spectrometry (pXRF) has been increasingly adopted for advanced soil analysis in temperate regions, comparatively few applications have been developed for tropical soils. Using PXRF, soil total elemental composition can be obtained in seconds, with properties inferred from the collected data. In the present study, pXRF was used to screen samples (n = 252) from tropical Cerrado agricultural areas under different land uses in Brazil. The objective was to determine the total elemental composition of soil samples and predict soil fertility properties using simple or multiple linear regression with pXRF data as a proxy. Air-dried and sieved soil samples (<2 mm) under laboratory conditions were screened using a pXRF, then compared to soil chemical characterization by conventional methods. pXRF data properly corroborated the known soil mineralogy and geochemical background of Cerrado soils. Based exclusively on pXRF data, clay content was successfully predicted. Also, soil organic matter and plant-available forms of Ca, Mn and Cu were reasonably predicted from pXRF results.
URI: https://www.sciencedirect.com/science/article/abs/pii/S0016706118324054#!
http://repositorio.ufla.br/jspui/handle/1/40805
Appears in Collections:DCS - Artigos publicados em periódicos

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