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Proceedings Paper

Near-infrared spectrophotometry for soil property sensing
Author(s): Kenneth A. Sudduth; John W. Hummel
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Paper 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.

Paper Details

Date Published: 12 May 1993
PDF: 12 pages
Proc. SPIE 1836, Optics in Agriculture and Forestry, (12 May 1993); doi: 10.1117/12.144029
Show Author Affiliations
Kenneth A. Sudduth, USDA Agricultural Research Service (United States)
John W. Hummel, USDA Agricultural Research Service (United States)

Published in SPIE Proceedings Vol. 1836:
Optics in Agriculture and Forestry
James A. DeShazer; George E. Meyer, Editor(s)

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