Near-infrared spectrophotometry for soil property sensing

Kenneth A. Sudduth; John W. Hummel

doi:10.1117/12.144029

12 May 1993 Near-infrared spectrophotometry for soil property sensing

Kenneth A. Sudduth, John W. Hummel

Proceedings Volume 1836, Optics in Agriculture and Forestry; (1993) https://doi.org/10.1117/12.144029
Event: Applications in Optical Science and Engineering, 1992, Boston, MA, United States

Abstract

A portable, prototype NIR spectrophotometer was redesigned for improved accuracy and ease of use. The instrument was used to estimate soil organic carbon (or organic matter), moisture content, and clay content of 30 Illinois surface soils in the laboratory. Accuracy of carbon estimation by partial least squares regression was similar to that obtained with the previous design. The unit was also used to estimate soil organic carbon through the profile of two Illinois soils. Results of this test were promising, but need to be verified over a wider range of soils.

Citation Download Citation

Kenneth A. Sudduth and John W. Hummel "Near-infrared spectrophotometry for soil property sensing", Proc. SPIE 1836, Optics in Agriculture and Forestry, (12 May 1993); https://doi.org/10.1117/12.144029

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