Full TGIF Record # 315267
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Web URL(s):https://scisoc.confex.com/scisoc/2020am/meetingapp.cgi/Paper/125426
    Last checked: 03/26/2021
Publication Type:
Content Type:Abstract or Summary only
Author(s):Boeri, Pablo Augustin; Unruh, J. Bryan; Kenworthy, Kevin E.; Kruse, Jason; Shaddox, Travis W.; Schiavon, Marco; Riley, Simon S.
Author Affiliation:Boeri: Graduate Student, Environmental Horticulture, West Florida Research & Education Center, University of Florida, Jay, FL; Unruh: Ext. Turfgrass Specialist, UF/IFAS West Florida Research and Education Center, University of Florida, Jay, FL; Kenworthy: Professor, Agronomy, University of Florida, Gainesville, FL; Kruse: Associate Professor, Environmental Horticulture Department, University of Florida, Gainesville, FL; Shaddox: Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY; Schiavon: Assistant Professor, Environmental Horticulture, University of Florida, Davie, FL; Riley: University Of Florida, Gainesville, FL
Title:Nitrogen requirements for bermudagrass fairways (Cynodon spp.) in northwest Florida
Section:Golf turf management poster (includes student competition)
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C05 turfgrass science
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Meeting Info.:November 9-13, 2020
Source:ASA, CSSA and SSSA International Annual Meetings. November 2020, p. 125426.
Publishing Information:[Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America]
# of Pages:1
Related Web URL:https://scisoc.confex.com/scisoc/2020am/mediafile/Handout/Paper125426/CSSS%20Poster.%20Boeri.pdf
    Last checked: 03/26/2021
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Abstract/Contents:"Water conservation and nutrient pollution concerns have increased in recent years. Quantifying the specific nitrogen and water requirements of bermudagrass (Cynodon spp.) varieties available in the market will optimize water and nutrient inputs, protecting the environment, and saving money. In 2018 and 2019, seven bermudagrass genotypes; TifTuf, TifGrand, Tifway, PremierPro, Latitude36, Bimini and Celebration were evaluated using a linear gradient irrigation system (LGIS) at Jay, FL. The soil is an Orangeburg sandy loam with pH 5.5 and 1% organic matter. The experiment was arranged as a split-split block design. The LGIS provided an irrigation gradient from 0 to 120% of reference ET0 Fertility was applied at 0, 12.3, 19.6, 29.5 kg-N-ha-1 each month using urea. Digital images and NDVI were collected weekly. Dates where weekly precipitation was sufficient (>25.4 mm), were identified. A modified Michaelis-Menton function was used to model the data. Different N responses were observed across genotypes and irrigation levels. When irrigation increased, Tiftuf, Tifway, PremierPro and Latitude36 response to N decreased. Whereas Celebration, Bimini, and TifGrand slightly increased their N response. At 0% ET0 irrigation, Tiftuf improved turf quality from 3.9 (0 kg-N-ha-1) to 5.8 (29.3 kg-N-ha-1) having the greatest response to N. At =50% ETT0, Celebration and Bimini had the greatest response to N. TifGrand, PremierPro, Latitude36, and Tifway were the only genotypes that reached acceptable quality with 0 and 12.3 kg-N-ha-1, at >50% ET0. At 29.5 kg-N-ha-1, TifTuf (1% ET0), TifGrand (6% ET0), Tifway (25% ET0), Latitude36 (24% ET0), PremierPro (34% ET0), Bimini (56% ET0) and Celebration (64% ET0) needed less than 100% ET0 to maintain acceptable quality (ā‰„6). Results from his study suggest that genotype response to N can vary with different irrigation levels. Furthermore, TifTuf and TifGrand may be maintained without supplementary irrigation when precipitation events are adequate."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Boeri, P. A., J. B. Unruh, K. E. Kenworthy, J. Kruse, T. W. Shaddox, M. Schiavon, et al. 2020. Nitrogen requirements for bermudagrass fairways (Cynodon spp.) in northwest Florida. Agron. Abr. p. 125426.
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