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DOI: | 10.2135/cropsci2010.05.0296 |
Web URL(s): | https://acsess.onlinelibrary.wiley.com/doi/10.2135/cropsci2010.05.0296 Last checked: 03/24/2024 Access conditions: Item is within a limited-access website https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2135/cropsci2010.05.0296 Last checked: 03/24/2024 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Lee, Hyeonju;
Bremer, Dale J.;
Su, Kemin;
Keeley, Steven J. |
Author Affiliation: | Lee: Dep. of Plant Pathology; Bremer and Keeley: Dep. of Horticulture, Forestry & Recreation Resources, Kansas State Univ., Manhattan, KS; Su: Dep. of Horticulture and Landscape Architecture, Oklahoma State Univ., Stillwater, OK |
Title: | Relationships between normalized difference vegetation index and visual quality in turfgrasses: Effects of mowing height |
Section: | Research Other records with the "Research" Section
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Source: | Crop Science. Vol. 51, No. 1, January 2011, p. 323-332. |
Publishing Information: | Madison, WI: Crop Science Society of America |
# of Pages: | 10 |
Keywords: | TIC Keywords: Biomass determination; Canopy reflectance; Evapotranspiration; Leaf area index; Mowing height; Normalized Difference Vegetation Index; Spectral analysis; Visual evaluation
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Abstract/Contents: | "Canopy spectral reflectance may provide an objective means to evaluate visual quality of turfgrass, but evaluations of quality may be confounded by cultural practices that affect reflectance, such as mowing height. In this 2-yr study near Manhattan, KS, we examined effects of mowing height on relationships between normalized difference vegetation index (NDVI) and visual quality ratings in Kentucky bluegrass (KBG; Poa pratensis L., 'Apollo') and in a KBG O Texas bluegrass (Poa arachnifera Torr.) hybrid (HBG; 'Thermal Blue'). Mowing heights were 7.62 cm (high) and 3.81 cm (low). The NDVI averaged 4.5 to 7% greater in high- than in low-mown plots. Distinct regression models of visual quality were found at each mowing height and in each species (r2 from 0.40 to 0.81); separate relationships between NDVI and visual quality were also found between years in the same plots. Correlations between NDVI and visual quality were stronger at high than at low mowing heights, possibly because of greater green biomass at high mowing heights. The 95% confidence intervals surrounding predictions of visual quality from NDVI ranged from ^D+-1.34 to 2.75 (on a 1-to-9 scale). Thus, lack of precision is a concern when using these models for detection of differences between treatments. Results indicate that when using NDVI to evaluate turfgrass quality, evaluations should be limited to plots maintained at the same mowing height and with the same species to reduce variability in NDVI." |
Language: | English |
References: | 40 |
See Also: | Interpretive summary appears in Golf Course Management, 84(8) August 2016, p. 72, R=274094. R=274094 |
Note: | Figures Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Lee, H., D. J. Bremer, K. Su, and S. J. Keeley. 2011. Relationships between normalized difference vegetation index and visual quality in turfgrasses: Effects of mowing height. Crop Sci. 51(1):p. 323-332. |
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| DOI: 10.2135/cropsci2010.05.0296 |
| Web URL(s): https://acsess.onlinelibrary.wiley.com/doi/10.2135/cropsci2010.05.0296 Last checked: 03/24/2024 Access conditions: Item is within a limited-access website https://acsess.onlinelibrary.wiley.com/doi/epdf/10.2135/cropsci2010.05.0296 Last checked: 03/24/2024 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: b2211522a |
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