Full TGIF Record # 90853
Item 1 of 1
Publication Type:
i
Proceedings
Author(s):Keskin, Muhareem; Dodd, Roy B.; Han, Young J.; Khalilian, Ahmad; Wolak, Francis J.
Author Affiliation:Agricultural and Biological Engineering Department Clemson University, Clemson, South Carolina Keskin: Graduate Research Assistant; Dodd: Professor; Han: Professor; Khalilian: Professor; Wolak: Professors, Agriculture and Biological Engineering Department, Clemson University, Clemson, South Carolina
Title:Assesing nitrogen content of golf course turfgrass clippings using spectral reflectance
Meeting Info.:Sacramento, CA: July 29-August 1, 2001
Source:2001 ASAE Annual International Meeting. 2001, p. 1-18.
Publishing Information:St. Joseph, MI: American Society of Agricultural Engineers
# of Pages:18
Keywords:TIC Keywords: Clippings; Nitrogen level; Golf courses; Analytical methods
Abstract/Contents:"Turfgrass clipping samples of two different species were obtained from a commercial golf course and their reflectance was measured using a dual type spectroadiometer under artificial illumination three hours and 51 hours after mowing. For the creeping bentgrass, the reflectance values in green band (520-580 nm) and the NIR band (770-1050nm) increased as the nitrogen content increased. For the hybrid bermudagrass+perennial ryegrass blend, no general trend was observed. Four wavelength bands at 550, 680, 770, and 810 nm were selected to develop and compare several regression models with varying number of independent variables. All models performed well (R2>0.87) and predicted the nitrogen content within ±1.0% for creeping bentgrass clipping samples. A discrimination analysis showed that the regression model with a single wavelength variable performed as well as the models with more number of wavelength variables."
Language:English
References:22
Note:Paper # 01-1174
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Keskin, M., R. B. Dodd, Y. J. Han, A. Khalilian, and F. J. Wolak. 2001. Assesing nitrogen content of golf course turfgrass clippings using spectral reflectance. p. 1-18. In 2001 ASAE Annual International Meeting. Sacramento, CA: July 29-August 1, 2001. St. Joseph, MI: American Society of Agricultural Engineers.
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