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Estimation of Fall Dormancy in Alfalfa by Near Infrared Reflectance Spectroscopy

R.L. Kallenbach*a, C.A. Robertsa, L.R. Teuberb, G.J. Bishop-Hurleya and H.R. Benedicta

a Dep. of Agronomy Univ. of Missouri, Columbia, MO 65211
b Dep. of Agronomy and Range Science, Univ. of California, Davis, CA 95616



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Fig. 1. Predicted versus actual fall dormancy rating of individual alfalfa plants (n = 28). Fall dormancy was predicted by NIR spectroscopy and regressed against fall dormancy calculated from actual field data on a plant-by-plant basis.

 


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Fig. 2. Predicted versus actual fall dormancy rating of nine alfalfa cultivars. Fall dormancy was predicted by NIR spectroscopy on samples collected from five plants from each cultivar and the mean values regressed against their standard fall dormancy class reported by Taggard et al. (2000).

 





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