Full TGIF Record # 127249
Item 1 of 1
DOI:10.2135/cropsci2006.06.0400
Web URL(s):https://dl.sciencesocieties.org/publications/cs/pdfs/47/4/1603
    Last checked: 11/16/2016
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https://dl.sciencesocieties.org/publications/cs/articles/47/4/1603
    Last checked: 11/16/2016
    Access conditions: Item is within a limited-access website
Publication Type:
i
Refereed
Author(s):Xiong, X.; Bell, G. E.; Solie, J. B.; Smith, M. W.; Martin, B.
Author Affiliation:Xiong: Department of Agronomy, University of Florida, Gainesville, Florida; Bell and Smith: Department of Horticulture and Landscape Architecture; Solie: Department of Biosystems and Agricultural Engineering; Martin: Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, Oklahoma
Title:Bermudagrass seasonal responses to nitrogen fertilization and irrigation detected using optical sensing
Section:Turfgrass science
Other records with the "Turfgrass science" Section
Source:Crop Science. Vol. 47, No. 4, July/August 2007, p. 1603-1610.
Publishing Information:Madison, WI: Crop Science Society of America
# of Pages:8
Related Web URL:https://dl.sciencesocieties.org/publications/cs/abstracts/47/4/1603
    Last checked: 11/16/2016
    Notes: Abstract only
Keywords:TIC Keywords: Cynodon dactylon; Nitrogen fertilization; Irrigation; Optical analysis; Photosynthetically active radiation; Radiation; Cell structure; Relative water content; Pigments; Chlorophyll content; Light relations; Turfgrass quality; Seasonal variation; Color; Irrigation rates; Red light; Seasonal quality evaluation; Visual evaluation; Reflectance; Fertilization rates
Abstract/Contents:"The objective of this study was to evaluate seasonal differences in bermudagrass response to N fertilization and irrigation by using optical sensing. A second objective was to determine if optical sensing could measure N status when the turf response to N was confounded by differences in moisture status. Bermudagrasses (Cynodon dactylon L.) 'Rivera' and 'Yukon' were managed under three irrigation treatments and six N treatments during the growing seasons in 2003 and 2004. Turf quality, normalized difference vegetation index (NDVI), green normalized difference vegetation index (GNDVI), red light reflectance in relation to near infrared reflectance (R/NIR), and green light reflectance in relation to near infrared reflectance (G/NIR) were measured. Bermudagrass demonstrated a noticeable third-order polynomial seasonal trend in response to N and irrigation treatment, and this trend was characterized as early-, peak-, mid- and late-season responses. Normalized difference vegetation index and GNDVI demonstrated a better relationship with turf quality and N status than R/NIR and G/NIR. A comparison among the four indices showed NDVI to be more closely correlated with irrigation, N fertilization, and turf quality. Minimum acceptable and target NDVI were developed by seasonal period based on visual turf quality assessment. It was also found that NDVI response to N fertilization was not strongly affected by irrigation treatment and could be used as an indicator of N status and need regardless of irrigation treatment."
Language:English
References:25
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Xiong, X., G. E. Bell, J. B. Solie, M. W. Smith, and B. Martin. 2007. Bermudagrass seasonal responses to nitrogen fertilization and irrigation detected using optical sensing. Crop Sci. 47(4):p. 1603-1610.
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DOI: 10.2135/cropsci2006.06.0400
Web URL(s):
https://dl.sciencesocieties.org/publications/cs/pdfs/47/4/1603
    Last checked: 11/16/2016
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/cs/articles/47/4/1603
    Last checked: 11/16/2016
    Access conditions: Item is within a limited-access website
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