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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2012 Proceedings-SWSS.pdf#page=97
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): | Cooper, T.;
Straw, C.;
Beck, L. L.;
Henry, G. M.;
McCullough, P. |
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| Author Affiliation: | Cooper, Straw, Beck and Henry: Texas Tech University, Lubbock, TX; McCullough: University of Georgia, Griffin, GA |
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| Title: | Perennial ryegrass overseeding tolerance to residual indaziflam activity |
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| Section: | Posters
Other records with the "Posters" 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. 25. |
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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; Cynodon dactylon; Herbicide resistance; Indaziflam; Lolium perenne; Overseeding
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| Abstract/Contents: | "Research was conducted from March to November 2011 on a common bermudagrass (Cynodon dactylon L.) golf course fairway at Reese Golf Course (Lubbock, TX) and a 'Tifway 419' hybrid bermudagrass (C. dactylon x. C. transvaalensis Burtt-Davey) fairway at Lake Ridge Country Club (Lubbock, TX). Soil at Reese Golf Course was Mobeetie fine sandy loam (Coarse-loamy, mixed, superactive, thermic Aridic Haplustepts) with a pH of 7.8 and 1.2% organic matter. At Lake Ridge Country Club soil was a Brownfield sandy clay loam (Loamy, mixed, superactive, thermic Arenic Aridic Paleustalfs) with a pH of 7.9 and 1.7% organic matter. Both sites were mowed at ~6 mm with clippings returned. Plots measured 1.5 x 1.5 m and were arranged in a randomized complete block design with four replications. Treatments at each location included indaziflam at 35, 52.5, and 70 g ai ha-1, indaziflam at 50 g ai ha-1 followed by (fb) indaziflam at 35 g ai ha-1, and prodiamine at 729 g ai ha-1. An untreated check was followed by (fb) indaziflam at 35 g ai ha-1, and prodiamine at 729 g ai ha-1. An untreated check was included for comparison. Treatments were applied with a CO2 powered boom sprayer calibrated to deliver 304 L ha-1 using 8003 flat-fan nozzles. Initial applications were made on March 11, 2011 with treatments requiring a sequential application applied on April 22, 2011. Soil temperature averaged ~13 C when treatments were applied at each location. The entire experimental area was overseeded with perennial ryegrass at 392 kg ha-1 on 17 October 2011. This date was 30 weeks after initial herbicide treatment. The research area was verticut in two directions to a depth of 0.6 cm to open the canopy for overseeding without disturbing the soil profile. Perennial ryegrass seed was broadcast in two directions across the site using a cyclone spreader. Perennial ryegrass cover was evaluated visually on a weekly basis during November 2011. These dates corresponded to 235, 241, 248, and 257 days after initial herbicide treatment (DAIT). All data were subjected to analysis of variance and means were separated using Fisher's protected LSD test at the 0.05 significance level. No significant location-by-treatment interactions were detected in perennial ryegrass cover data; thus, data from each location were combined. Applications of indaziflam at 70 and 52.5 g ha-1 yielded <= 15% perennial ryegrass cover 241 DAIT compared to 72% for the untreated check. By 257 DAIT, perennial ryegrass cover on plots treated with indaziflam at 52.5 and 70 g ha-1 measured 37 to 48% compared to 88% for the untreated check. However, perennial ryegrass cover following applications of indaziflam at 35 g ha-1 did not differ from the untreated check on any evaluation date. Perennial ryegrass cover following applications of indaziflam at 35 g ha-1 measured 65% at 241 DAIT and 84% 257 DAIT. Perennial ryegrass cover on plots treated with prodiamine at 546 g ha-1 did not differ from the untreated control on any evaluation date as well." |
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| Language: | English |
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| References: | 0 |
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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):
Cooper, T., C. Straw, L. L. Beck, G. M. Henry, and P. McCullough. 2012. Perennial ryegrass overseeding tolerance to residual indaziflam activity. South. Weed Sci. Soc. Proc. 65:p. 25. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2012 Proceedings-SWSS.pdf#page=97
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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