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Differences in visible and near-infrared light reflectance between orange fruit and leavesThe objective was to find the best time during the season (April 26, 1972 to January 8, 1973) to distinguish orange fruit from leaves by spectrophotometrically determining at 10-day intervals when the difference in visible (550- and 650-nm wavelengths) and near-infrared (850-nm wavelength) light reflectance between fruit and nearby leaves was largest. December 5 to January 8 was the best time to distinguish fruit from leaves. During this period the fruit's color was rapidly changing from green to yellow, and the difference in visible light reflectance between fruit and leaves was largest. The difference in near-infrared reflectance between leaves and fruit remained essentially constant during ripening when the difference in visible light reflectance between leaves and fruit was largest.
Document ID
19760045094
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Gausman, H. W.
(Agricultural Research Service Weslaco, TX, United States)
Escobar, D. E.
(Agricultural Research Service Weslaco, TX, United States)
Berumen, A.
(U.S. Department of Agriculture, Agricultural Research Service, Weslaco Tex., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Subject Category
Earth Resources And Remote Sensing
Meeting Information
Meeting: Remote sensing of earth resources. Volume 4
Location: Tullahoma, TN
Start Date: March 24, 1975
End Date: March 26, 1975
Accession Number
76A28060
Funding Number(s)
CONTRACT_GRANT: NASA ORDER R-09-038-002
Distribution Limits
Public
Copyright
Other

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