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| DOI: | 10.21273/HORTSCI16746-22 |
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| Web URL(s): | https://journals.ashs.org/hortsci/view/journals/hortsci/57/10/article-p1328.xml
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| Publication Type:
| Refereed |
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| Author(s): | Zhang, Xunzhong;
Taylor, Zachary;
Goatley, Mike;
Booth, Jordan;
Brown, Isabel;
Kosiarski, Kelly |
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| Author Affiliation: | Zhang, Goatley, Brown, and Kosiarski: School of Plant and Environmental Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA; Taylor: Helena Agri-Enterprises LLC, Greenville, NC; Booth: United States Golf Association, Pinehurst, NC |
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| Title: | Seaweed extract-based biostimulant impacts on nitrate reductase activity and root viability of ultradwarf bermudagrass subjected to heat and drought stress |
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| Section: | Reports
Other records with the "Reports" Section
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| Source: | HortScience. Vol. 57, No. 10, October 2022, p. 1328-1333. |
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| Publishing Information: | Alexandria, Virginia: American Society for Horticultural Science |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Abiotic disorders; Biostimulants; Cynodon; Drought stress; Dwarf bermudagrasses; Foliar feeding; Heat stress; Nitrogen metabolism; Photosynthetic capacity; Root growth; Seaweed products; Turfgrass quality; Warm season turfgrasses
Author-Supplied Keywords: Abiotic stress; Kelp extract; Nitrogen; Turfgrass
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| Abstract/Contents: | "Bermudagrass is a warm-season turfgrass species widely used for sports fields, home lawns, and golf courses. Ultradwarf bermudagrass has been used for golf course greens, but its quality declines with abiotic stresses. This 2-year study was designed to investigate if foliar applications of seaweed extract-based biostimulant Utilize® could improve ultradwarf bermudagrass photosynthetic function, nitrate reductase activity, root growth, and root function while under heat stress and drought stress conditions. Utilize® was applied to ultradwarf bermudagrass canopy at 0, 88, 117, 175, and 234 μL·m-2. Two weeks after the initial application of Utilize®, bermudagrass was subjected to heat (40/36 °C, day/night) and drought stress (4050% evapotranspiration replacement) for up to 42 days. Heat stress and drought stress caused decline of the turf quality. Foliar application of Utilize® at 117, 175, and 234 μL·m-2 biweekly consistently improved turf quality and leaf color ratings and increased leaf chlorophyll and carotenoid concentrations, net photosynthetic rate, nitrate reductase activity, and root growth and viability. On average, Utilize® at 117, 175, and 234 μL·m-2 increased turf quality ratings by 9.1%, 12.1%, and 10.6%, respectively, net photosynthetic rates by 32.4%, 45.0%, and 35.0%, respectively, and nitrate reductase activity by 16.7%, 18.8%, and 14.6%, respectively, compared with the control. Utilize® at 117, 175, and 234 μL·m-2 increased the root biomass, root length, surface area, and root volume compared with the control. Utilize® at 88, 117, 175, and 234 μL·m-2 increased root viability by 46.2%, 73.1%, 88.5%, and 74.4%, respectively, relative to the control. The results of this study suggest that seaweed extract-based biostimulant Utilize® improves nitrogen metabolism, photosynthetic function, root growth, and root viability. Foliar application of Utilize® at rates between 117 and 175 μL·m-2 biweekly can be considered an effective approach to improving ultradwarf bermudagrass performance under heat stress and drought stress environments." |
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| Language: | English |
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| References: | 40 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Zhang, X., Z. Taylor, M. Goatley, J. Booth, I. Brown, and K. Kosiarski. 2022. Seaweed extract-based biostimulant impacts on nitrate reductase activity and root viability of ultradwarf bermudagrass subjected to heat and drought stress. HortScience. 57(10):p. 1328-1333. |
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| DOI: 10.21273/HORTSCI16746-22 |
| Web URL(s):
https://journals.ashs.org/hortsci/view/journals/hortsci/57/10/article-p1328.xml
Last checked: 09/27/2022
Requires: HTML5
https://journals.ashs.org/hortsci/downloadpdf/journals/hortsci/57/10/article-p1328.xml
Last checked: 09/27/2022
Requires: PDF Reader
Notes: Direct download |
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MSU catalog number: b2217685 |
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