Full TGIF Record # 150922
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Web URL(s):https://archive.lib.msu.edu/tic/its/articles/2009jou31.pdf
    Last checked: 10/18/2011
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Publication Type:
i
Refereed
Author(s):Johnsen, Aaron R.; Horgan, Brian P.; Cline, Van
Author Affiliation:Johnsen and Horgan: Department of Horticulture Science, University of Minnesota, Saint Paul, Minnesota; Cline: The Toro Company, Bloomington, Minnesota
Title:Effect of turf species and sensor orientation to the sun on reflectance measurement
Section:Conservation/envrionmental quality
Other records with the "Conservation/envrionmental quality" Section
Meeting Info.:Santiago, Chile: July 26-30 2009
Source:International Turfgrass Society Research Journal. Vol. 11, No. Part 1, 2009, p. 31-39.
Publishing Information:Madison, WI: International Turfgrass Society
# of Pages:9
Keywords:TIC Keywords: Environmental factors; Normalized difference vegetation index; Reflectance; Remote sensing; Sun exposure; Turf management
Abstract/Contents:"Reflectance measurements of stressed turfgrass have shown potential to improve turfgrass management practices. Research on management and environmental conditions that influence reflectance measurements is limited. Use of reflectance measurements in turfgrass management must carefully consider outside factors and practices that may influence the data. Therefore, the overall objective of this research was to evaluate the effect of management practices and the environment on turfgrass reflectance measurements. This was accomplished by conducting two field experiments during the 2006 and 2007 growing seasons. The objective of the first experiment was to assess the reflectance of turfgrass species maintained under low input fairway conditions. Results indicate that turfgrass species had significantly different (p<0.05) reflectance measurements at each rating time and the index or wavelength analyzed will influence these significant differences (p<0.05) between species. The objective of the second experiment was to evaluate the influence of sensor orientation to the sun at different times of the day. Results indicate that reflectance was significantly different at different azimuth angles and times of day. In addition, normalized difference vegetation index values increased when the sensor faced the sun. The results of these experiments demonstrate that turfgrass species and sensor orientation to the sun influence reflectance measurements of turfgrass."
Language:English
References:25
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Johnsen, A. R., B. P. Horgan, and V. Cline. 2009. Effect of turf species and sensor orientation to the sun on reflectance measurement. Int. Turfgrass Soc. Res. J. 11(Part 1):p. 31-39.
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https://archive.lib.msu.edu/tic/its/articles/2009jou31.pdf
    Last checked: 10/18/2011
    Requires: PDF Reader
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