Full TGIF Record # 214863
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Web URL(s):http://koix.kisti.re.kr/root_resolution.jsp?koi=KISTI1.1003/JNL.JAKO200828837396940
    Last checked: 01/31/2013
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Publication Type:
i
Refereed
Author(s):Lee, Joon-Hee; Trenholm, Laurie E.; Unruh, J. Bryan
Author Affiliation:Lee: Hampyung Dynasty Country Club of Daeju Group, Hampyung, Korea; Trenholm and Unruh: Dep. of Environmental Horticulture, Univ. of Florida, Gainesville, FL
Title:Multi-spectral reflectance of warm-season turfgrasses as influenced by deficit irrigation
Source:Korean Journal of Turfgrass Science. Vol. 22, No. 1, 2008, p. 1-11.
Publishing Information:Korea: Turfgrass Society of Korea
# of Pages:11
Abstract/Contents:"Remote sensing using multispectral radiometry may be a useful tool to detect drought stress in turf. The objective of this research was to investigate the correlation between drought stress and multispectral reflectance (MSR) from the turf canopy. St. Augustinegrass (Stenotaphrum secundatum[Walt.] Kuntze.) cultivars 'Floratam' and 'Palmetto', 'SeaIsle 1' seashore paspalum (Paspalum vaginatum Swartz.), 'Empire' zoysiagrass (Zoysia japonica Steud.), and 'Pensacola' bahiagrass (Paspalum notatumFlugge) were established in lysimeters in the University of Florida Envirotron greenhouse facility in Gainesville. Irrigation was applied at 100%, 80%, 60%, or 40% of evapotranspiration (ET). Weekly evaluations included: a) shoot quality, leaf rolling, leaf firing b) soil moisture, chlorophyll content index; c) photosynthesis and d) multispectral reflectance. All the measurements were correlated with MSR data. Drought stress affected the infrared spectral region more than the visible spectral region. Reflectance sensitivity to water content of leaves was higher in the infrared spectral region than in the visible spectral region. Grasses irrigated at 100% and 80% of ET had no differences in normalized difference vegetation indices (NDVI), leaf area index (LAI), and stress indices. Grasses irrigated at 60% and 40% of ET had differences in NDVI, LAI, and stress indices. All measured wavelengths except 710nm were highly correlated (P < 0.0001) with turf visual quality, leaf firing, leaf rolling, soil moisture, chlorophyll content index, and photosynthesis. MSR could detect drought stress from the turf canopy."
Language:Korean
References:15
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Lee, J.-H., L. E. Trenholm, and J. B. Unruh. 2008. Multi-spectral reflectance of warm-season turfgrasses as influenced by deficit irrigation. (In Korean) Korean Journal of Turfgrass Science. 22(1):p. 1-11.
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Web URL(s):
http://koix.kisti.re.kr/root_resolution.jsp?koi=KISTI1.1003/JNL.JAKO200828837396940
    Last checked: 01/31/2013
    Requires: PDF Reader
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