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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2012 Proceedings-SWSS.pdf#page=217
Last checked: 08/07/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Baldwin, C. M.;
Brede, A. D. |
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| Author Affiliation: | Jacklin Seed by Simplot, Post Falls, ID |
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| Title: | Glyphosate application rates required for Poa annua in glyphosate tolerant perennial ryegrass cultivars, JS501 and Replay |
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| Section: | Weed management in turf crops
Other records with the "Weed management in turf crops" Section
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| Meeting Info.: | Charleston, South Carolina: January 23-25, 2012 |
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| Source: | 2012 Proceedings, Southern Weed Science Society. Vol. 65, 2012, p. 145. |
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| Publishing Information: | Champaign, Illinois: Southern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Comparisons; Cultivar evaluation; Glyphosate; Herbicide evaluation; Herbicide rates; Herbicide resistance; Lolium perenne; Poa annua control
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| Cultivar Names: | JS501; Replay |
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| Abstract/Contents: | "Trials were conducted to determine the glyphosate tolerance of 'JS501' and 'Replay' perennial ryegrass. A separate trial determined glyphosate rates required for effective Poa annua control. In the tolerance trial, Replay perennial ryegrass (Lolium perenne L.) was seeded on 5 May 2010 in Post Falls, ID at 390 kg ha-1. Glyphosate (Departure) was applied on 15 September 2010 at 0, 0.29, 0.58, 1.16, 1.74, and 2.32 kg ae ha-1. In the Poa annua control trial, one block of 'JS501' and a one block of 'Replay' perennial ryegrass (Lolium perenne L.) were seeded on 15 September 2008 in Post Falls, ID at 390 kg ha-1. Glyphosate (Departure) rates were randomized within each cultivar block at 0, 0.15, 0.29, 0.44, and 0.58 kg ae ha-1. Glyphosate applications were 17 June and 19 August 2009 and 25 June and 25 August 2010. For all trials, the existing stand of turfgrass was killed, leaving bare ground for seeding. Data collected for all trials included turfgrass color, percent leaf firing, and percent Poa annua. An application rate of 0.85kg ae ha-1 was required to cause 20% leaf firing. For Poa annua control, after four glyphosate applications over a 2-year period, a rate of 0.29 kg ae ha-1 or greater resulted in less than 10% Poa annua. Meanwhile, the 0.15 kg ae ha-1 application rate had approximately 28% Poa annua. Untreated plots had approximately 83% Poa annua. Discoloration was not noted for either perennial ryegrass cultivar at any point over the 2-year trial period. Based on the environmental conditions of each trial, results suggest recommended application rates should be 0.29 kg ae ha-1. This rate is sufficient for Poa annua control and also provides protection in case a spray overlap occurs during an application." |
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| Language: | English |
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| References: | 0 |
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| See Also: | Original version appears in 2011 International Annual Meetings: [Abstracts][ASA-CSSA-SSSA], 2011, p. 64563, with variant authors Christian Baldwin, Jonathan Schnore, A. Douglas Brede and Jami Mayer, R=192800. R=192800 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Baldwin, C. M., and A. D. Brede. 2012. Glyphosate application rates required for Poa annua in glyphosate tolerant perennial ryegrass cultivars, JS501 and Replay. South. Weed Sci. Soc. Proc. 65:p. 145. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2012 Proceedings-SWSS.pdf#page=217
Last checked: 08/07/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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