Tropical soil pH and sorption complex prediction via portable X-ray fluorescence spectrometry

• Published in: Geoderma Vol. 361; p. 114132
• Main Authors: dos Santos Teixeira, Anita Fernanda, Henrique Procópio Pelegrino, Marcelo, Missina Faria, Wilson, Henrique Godinho Silva, Sérgio, Gabriela Marcolino Gonçalves, Mariana, Weimar Acerbi Júnior, Fausto, Rezende Gomide, Lucas, Linares Pádua Júnior, Alceu, de Souza, Igor Alexandre, Chakraborty, Somsubhra, Weindorf, David C., Roberto Guimarães Guilherme, Luiz, Curi, Nilton
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.03.2020
• Subjects: Base saturation; CEC; Cubist; prediction; pXRF; Random forest; Soil fertility; soil pH; sorption; tropical soils; wastes; X-ray fluorescence spectroscopy; CEC; SUB; OOB; Soil fertility; SMLR; Base saturation; RPD; pXRF; Cubist; Random forest; RMSE; SB; CS; SURF; Varex; CV; RF; MSEoob; ME; NIST; Alsat; BSP

•pXRF was used to predict five different soil properties in tropical soils.•Three different algorithms were tested and compared: Cubist, RF and SMLR.•Sum of bases, base saturation percentage, and Alsat achieved better results.•CaO was the most influential variable for soil properties prediction.•pXR...