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Leaf water stress detection utilizing thematic mapper bands 3, 4 and 5 in soybean plantsThe total and diffuse radiance responses of Thematic Mapper bands 3 (0.63-0.69 microns), 4 (0.76-0.90 microns), and 5 (1.55-1.75 microns) to water stress in a soybean canopy are compared. Polarization measurements were used to separate the total from the diffuse reflectance; the reflectances were compared statistically at a variety of look angles at 15 min intervals from about 09.00 until 14.00 hrs EST. The results suggest that remotely sensed data collected in the photographic infrared region (TM4) are sensitive to leaf water stress in a 100 percent canopy cover of soybeans, and that TM3 is less sensitive than TM4 for detection of reversible foliar water stress. The mean values of TM5 reflectance data show similar trends to TM4. The primary implication of this study is that remote sensing of water stress in green plant canopies is possible in TM4 from ground-based observations primarily through the indirect link of leaf geometry.
Document ID
19830054065
Document Type
Reprint (Version printed in journal)
Authors
Holben, B. N. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Schutt, J. B. (NASA Goddard Space Flight Center Earth Resources Branch, Greenbelt, MD, United States)
Mcmurtrey, J., III (U.S. Department of Agriculture, Field Crops Laboratory, Beltsville MD, United States)
Date Acquired
August 11, 2013
Publication Date
June 1, 1983
Publication Information
Publication: International Journal of Remote Sensing
Volume: 4
ISSN: 0143-1161
Subject Category
EARTH RESOURCES AND REMOTE SENSING
Distribution Limits
Public
Copyright
Other