Estimation of Ground Cover via Spectral Databy Daniel S. Axness, Oregon State Univ, Corvallis, United States,
Chaur-Fong Chen, Oregon State Univ, Corvallis, United States,
Marshall J. English, Oregon State Univ, Corvallis, United States,
Abstract: Potato ground cover and spectral data were measured in the Columbia Basin during 1990 growing season. Three spectral models were correlated with ground cover; normalized difference, red ratio, and the first derivative of the spectral curve at 750 nm. All models were significant at the 99% level with normalized difference having the highest correlation followed by the first derivative model and then red ratio.
Subject Headings: Vegetation | Crops | Water resources | Basins | Seasonal variations | Curvature | Correlation | Irrigation water
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