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Spectral behavior of wheat yield variety trialsLittle variation between varieties is seen at jointing, but the variability is found to increase during grain filling and decline again at maturity. No relationship is found between spectral response and yield, and when yields are segregated into various classes the spectral response is the same. Spring and winter nurseries are found to separate during the reproductive stage because of differences in dates of heading and maturity, but they exhibit similar spectral responses. The transformed normalized difference is at a minimum after the maximum grain weight occurs and the leaves begin to brown and fall off. These data of 100% ground cover demonstrate that it is not possible to predict grain yield from only spectral data. This, however, may not apply when reduced yields are caused by less-than-full ground cover
Document ID
19820027328
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hatfield, J. L.
(California, University Davis, CA, United States)
Date Acquired
August 10, 2013
Publication Date
October 1, 1981
Publication Information
Publication: Photogrammetric Engineering and Remote Sensing
Volume: 47
Subject Category
Earth Resources And Remote Sensing
Accession Number
82A10863
Funding Number(s)
CONTRACT_GRANT: NCA2-OR-180-607
Distribution Limits
Public
Copyright
Other

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