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| Web URL(s): | https://scisoc.confex.com/crops/2017am/webprogram/Paper105911.html
Last checked: 10/11/2017 |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Bowling, Will Jackson;
Tucker, Kevin;
Henry, Gerald M.;
Brosnan, James T.;
Breeden, Gregory K. |
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| Author Affiliation: | Bowling and Henry: University of Georgia-Athens, Athens, GA; Tucker: Crop and Soil Sciences, University of Georgia-Athens, Athens, GA; Brosnan and Breeden: Department of Plant Sciences, University of Tennessee - Knoxville, Knoxville, TN |
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| Title: | Targeting postemergence dallisgrass control using cooling degree days |
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| Section: | C05 Turfgrass Science
Other records with the "C05 Turfgrass Science" Section
Turf management: Pests poster (includes student competition)
Other records with the "Turf management: Pests poster (includes student competition)" Section
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| Meeting Info.: | Tampa, Florida: October 22-25, 2017 |
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| Source: | ASA, CSSA and SSSA International Annual Meetings. 2017, p. 105911. |
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| Publishing Information: | [Milwaukee, Wisconsin]: [American Society of Agronomy and the Entomological Society of America] |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Application rates; Cynodon dactylon; Dallisgrass control; Glyphosate; Herbicide evaluation; MSMA; Methylated seed oil; Postemergence weed control; Quinclorac
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| Trade Names: | Tribute Total; Drive XLR8; Roundup Pro |
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| Abstract/Contents: | "Field experiments were conducted at Pine Hills Golf Course in Winder, GA during 2016 and 2017. Research was conducted on a common bermudagrass [Cynodon dactylon (L.) Pers.] (3.8 cm) rough with a mature dallisgrass infestation. Plots (1.5 x 1.5 m) contained approximately 75% dallisgrass cover. Treatments were arranged in a 4 x 3 factorial (4 herbicides and 3 rates) within a randomized complete block design with 4 replications. Herbicide treatments were initiated on September 23, 2016 (5 to 125 CDD22C) and consisted of Drive XLR8 (quinclorac) at 1.5, 2.3, and 3.0 kg ai ha-1; MSMA (monosodium methanearsonate) at 6.1, 9.1, and 12.1 kg ai ha-1; Roundup PRO (glyphosate) at 5, 7.6, and 10.1 kg ai ha-1; and Tribute Total (thiencarbazone + foramsulfuron + halosulfuron) at 0.14, 0.18, and 0.22 kg ai ha-1. Methylated seed oil at 0.5% v/v was added to all Drive XLR8 and Tribute Total treatments. An untreated check was included for comparison. Herbicides were applied with a CO2 powered backpack sprayer calibrated to deliver 843 L ha-1 at 221 kPa. Visual ratings of % dallisgrass cover were recorded at 0, 4, and 21 weeks after initial treatment (WAIT) and converted to percent control by comparing back to % cover at trial initiation (0 WAIT). Initial dallisgrass control (4 WAIT) was greatest in response to Roundup PRO (100%), regardless of rate. Control with MSMA was 74 to 86%, regardless of rate, followed by (fb) Drive XLR8 (45 to 63%) and Tribute Total (25 to 47%) 4 WAIT. Long-term control (21 WAIT) was greatest in response to Roundup PRO (100%). All other treatments resulted in dallisgrass control of 85 to 95%, regardless of herbicide or rate. Targeted herbicide applications based on cooling degree days may have increased dallisgrass control; however, regrowth will be monitored through the summer." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only!
"718" |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bowling, W. J., K. Tucker, G. M. Henry, J. T. Brosnan, and G. K. Breeden. 2017. Targeting postemergence dallisgrass control using cooling degree days. Agron. Abr. p. 105911. |
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Last checked: 10/11/2017 |
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