Students, in groups of 2 or 3 used the GRAMS chemometrics software to analyze spectra of dry and live grasses that were placed on light and dark soil backgrounds, and to estimate crop leaf and stem N, P, and K nutrient contents. Student hands-on projects proved to be intellectually stimulating and all the students took an active role in their respective groups. Student findings showed considerable promise in using spectroradiometer measurements and chemometric analysis methods for quantifying rangeland grass cover over dark and light soils, and leaf nutrient content of Great Plains crops.
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