Full TGIF Record # 281206
Item 1 of 1
DOI:10.2135/cropsci2016.06.0471
Web URL(s):https://dl.sciencesocieties.org/publications/cs/articles/57/supplement1/S-161
    Last checked: 08/18/2017
    Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/cs/pdfs/57/supplement1/S-161
    Last checked: 08/18/2017
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    Access conditions: Item is within a limited-access website
Publication Type:
i
Refereed
Author(s):McCall, D. S.; Zhang, X.; Sullivan, D. G.; Askew, S. D.; Ervin, E. H.
Author Affiliation:McCall and Askew: Dep. Plant Pathology, Physiology, and Weed Science, Virginia Tech, Blacksburg, VA; Zhang and Ervin: Dep. Crop, Soil, and Environmental Science, Virginia Tech, Blacksburg, VA; Sullivan: TurfScout, LLC., Greensboro, NC
Title:Enhanced soil moisture assessment using narrowband reflectance vegetation indices in creeping bentgrass
Section:International Turfgrass Society Conference
Other records with the "International Turfgrass Society Conference" Section
Source:Crop Science. Vol. 57, No. Supplement 1, July/August 2017, p. S-161-S-168.
Publishing Information:Madison, Wisconsin: Crop Science Society of America
# of Pages:8
Related Web URL:https://dl.sciencesocieties.org/publications/cs/abstracts/57/supplement1/S-161
    Last checked: 08/18/2017
    Notes: Abstract only
Keywords:TIC Keywords: Agrostis stolonifera; Chlorophyll content; Color evaluation; Estimation; Normalized Difference Vegetation Index; Soil water content
Cultivar Names:L-93
Abstract/Contents:"Turfgrasses are measured aesthetically and by their ability to withstand stressors. Historically, researchers quantified acceptability by visual quality, but inconsistencies necessitate the use of vegetation indices (VIs) as an objective measurement. Indiscernible relationships have been established between turfgrass canopy normalized difference vegetation index (NDVI) and important variables such as soil moisture and leaf chlorophyll content. Alternative and variablespecific indices have been established in cropping systems. The water band index (WBI) is used for predicting water availability in cropping systems but has not been explored within turfgrass systems. The objective of this study was to compare the relationships of established VIs with chlorophyll content of L-93 creeping bentgrass (Agrostis stolonifera L.) and water content of a sand-based root zone maintained under greenhouse conditions. All VIs were moderately to strongly correlated to total chlorophyll content (r = 0.490.85). Turf color was more closely related to chlorophyll indices than to wet-lab quantification. Only WBI (r ≥ 0.80) and the green/red ratio index (GRI; r ≥ 0.50) were consistently related to soil water content. The NDVI was weakly related to soil water content in one trial (r = 0.49). Nonlinear regression showed that WBI can be useful for estimating a decline in soil water content as water first becomes limiting for creeping bentgrass and may offer a viable means to assess water availability independently of non-moisture-related stresses and more accurately compared with previous indices. Future research will evaluate WBI on broader geospatial scales to assess practical application for turfgrass irrigation management."
Language:English
References:38
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McCall, D. S., X. Zhang, D. G. Sullivan, S. D. Askew, and E. H. Ervin. 2017. Enhanced soil moisture assessment using narrowband reflectance vegetation indices in creeping bentgrass. Crop Sci. 57(Supplement 1):p. S-161-S-168.
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DOI: 10.2135/cropsci2016.06.0471
Web URL(s):
https://dl.sciencesocieties.org/publications/cs/articles/57/supplement1/S-161
    Last checked: 08/18/2017
    Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/cs/pdfs/57/supplement1/S-161
    Last checked: 08/18/2017
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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