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| DOI: | 10.1017/wet.2018.65 |
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| Web URL(s): | https://bioone.org/journals/Weed-Technology/volume-33/issue-1/wet.2018.65/Fineleaf-Fescue-Species-and-Variety-Tolerance-to-Glyphosate/10.1017/wet.2018.65.full
Last checked: 04/23/2019
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| Publication Type:
| Refereed |
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| Author(s): | Askew, Shawn D.;
Askew, Whitnee B.;
Goatley, J. Michael Jr. |
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| Author Affiliation: | Shawn Askew: Associate Professor, Department of Plant Pathology, Physiology, and Weed Science, Virginia Tech, Blacksburg, VA; Whitnee Askew: Turf Program Manager, Crop and Soil Environmental Sciences Department, Virginia Tech, Blacksburg, VA; Goatley: Professor, Crop and Soil Environmental Sciences Department, Virginia Tech, Blacksburg, VA |
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| Title: | Fineleaf fescue species and variety tolerance to glyphosate |
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| Source: | Weed Technology. Vol. 33, No. 1, February 2019, p. 185-191. |
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| Publishing Information: | Champaign, Illinois: Weed Science Society of America |
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| # of Pages: | 7 |
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| Related Web URL: | https://www.cambridge.org/core/journals/weed-technology/article/fineleaf-fescue-species-and-variety-tolerance-to-glyphosate/CF0DADC87677AC077EC36D02CC58C7C5
Last checked: 04/23/2019
Notes: Abstract only |
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| Keywords: | TIC Keywords: Fine fescues; Glyphosate; Herbicide resistance; Herbicide trials; Species evaluation
Author-Supplied Keywords: Low-input turfgrass; Seed head density; Turfgrass injury
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| Abstract/Contents: | "Some fineleaf fescues have demonstrated tolerance to glyphosate, and this broad-spectrum, nonselective herbicide would be a valuable tool for controlling various weeds in low-input turf areas. A study was conducted to evaluate tolerance of 56 fineleaf fescue varieties to glyphosate applied at 0.0, 0.4, 0.6, and 1.0 kg ae ha-1. The defunct 2003 National Turfgrass Evaluation Program fineleaf fescue variety trial at the Turfgrass Research Center in Blacksburg, VA, provided main plots on which glyphosate treatments were randomized independently on May 16, 2011, and June 26, 2013. Hard (HF) and sheep fescues (SF) were the most tolerant to glyphosate, followed by strong creeping red fescues (STC) and slender creeping red fescues (SLC). The most sensitive species was Chewings fescue (CH), most varieties of which were injured 50% to 65% per kilogram of glyphosate at 2 wk after treatment (WAT). At 8 WAT, 12 of 14 CH varieties were injured over 30% per kilogram of glyphosate, but predicted injury and normalized difference vegetation index (NDVI) of all varieties were acceptable at a more typical 0.5 to 0.7 kg ha-1 glyphosate rate. Nontreated seed head density of CH varieties ranged from 87 and 126 seed heads m-2 at 8 WAT compared with 2.8 to 42 seed heads m-2 from HF varieties. Glyphosate at 0.15 to 0.5 kg ha-1 eliminated 90% of seed heads regardless of fineleaf fescue variety. These data suggest that all fineleaf fescue varieties are inherently tolerant of glyphosate at rates at or below approximately 0.7 kg ha-1, but can be generally separated from most to least tolerant in the following order: HF, SF, STC, SLC, and CH." |
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| Language: | English |
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| References: | 20 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Askew, S. D., W. B. Askew, and J. M. Jr. Goatley. 2019. Fineleaf fescue species and variety tolerance to glyphosate. Weed Technol. 33(1):p. 185-191. |
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| DOI: 10.1017/wet.2018.65 |
| Web URL(s):
https://bioone.org/journals/Weed-Technology/volume-33/issue-1/wet.2018.65/Fineleaf-Fescue-Species-and-Variety-Tolerance-to-Glyphosate/10.1017/wet.2018.65.full
Last checked: 04/23/2019
Access conditions: Item is within a limted-access website
https://bioone.org/journalArticle/Download?fullDOI=10.1017%2Fwet.2018.65
Last checked: 04/23/2019
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2174615a |
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