Evaluating low-cost portable near infrared sensors for rapid analysis of soils from South Eastern Australia

• Published in: Geoderma Regional Vol. 20; p. e00240
• Main Authors: Tang, Yijia, Jones, Edward, Minasny, Budiman
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.03.2020
• Subjects: Accuracy; calcium; carbon; clay; cost effectiveness; Cubist; data collection; exchangeable calcium; exchangeable magnesium; least squares; Lixisols; Low-cost sensors; Luvisols; magnesium; Near infrared spectroscopy; New South Wales; Partial Least Squares Regression; Portable sensors; prediction; Proximal sensing; rapid methods; reflectance; sand; soil pH; soil sampling; soil texture; Solonetz; spectrometers; wavelengths; New South Wales; Near infrared spectroscopy; Low-cost sensors; Accuracy; Luvisols; Portable sensors; Cubist; Proximal sensing; Lixisols; Solonetz; Partial Least Squares Regression

Near infrared spectroscopy has been proposed as a rapid and cost-effective method for soil analysis. Full-range visible near infrared (Vis-NIR) spectrometers working in the 350–2500 nm wavelength are commonly used for research purposes, but now miniaturized spectrometers with limited NIR ranges have...