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| Web URL(s): | http://www.newss.org/wp-content/uploads/2017/07/2017-NEPPSC-Proceedings-FINAL.pdf#page=105
Last checked: 04/16/2018
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https://www.newss.org/wp-content/uploads/2017/07/2017-NEWSS-Proceedings-FINAL.pdf#page=93
Last checked: 01/23/2023
Requires: PDF Reader
Notes: Item is within a single large file; Proceedings of the Seventy First Annual Meeting of the Northeastern Weed Science Society reprint |
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| Publication Type:
| Proceedings |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Elmore, M. T.;
Murphy, J. A.;
Park, B. S.;
Mansue, C.;
Alea, S. |
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| Author Affiliation: | Rutgers University, New Brunswick, NJ |
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| Title: | Herbicide programs for creeping bentgrass (Agrostis stolonifera) control in Kentucky bluegrass (Poa pratensis) |
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| Meeting Info.: | Philadelphia, Pennsylvania: January 3-6, 2017 |
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| Source: | Proceedings of the Second Annual Meeting of the Northeastern Plant, Pest, and Soils Conference. 2017, p. 98. |
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| Publishing Information: | s.l.: Northeastern Weed Science Society; Northeastern Regional Branch of the American Society of Agronomy, Crop Science Society of America, & Soil Science Society of America; and American Society of Horticultural Science - Northeastern Division |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Amicarbazone; Herbicide efficacy; Herbicide evaluation; Herbicide injury; Mesotrione; Poa pratensis; Selective weed control; Topramezone; Triclopyr
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| Cultivar Names: | Midnight II |
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| Abstract/Contents: | "Experiments were initiated in October 2015 and April 2016 to evaluate various herbicide programs for selective creeping bentgrass (CBG; Agrostis stolonifera) control in Kentucky bluegrass (Poa pratensis). Treatments included: two and three sequential mesotrione applications at 280 and 175 g ha-1 , respectively, on three-week intervals or four applications at 140 g ha-1 on two-week intervals; tank-mixtures of three sequential mesotrione (175 g ha-1 ) + triclopyr ester (280 and 560 g ha-1 ) applications on three week intervals; four sequential applications of mesotrione (140 g ha-1 ) + amicarbazone (50 g ha-1 ) and mesotrione (140 g ha-1 ) + amicarbazone (100 g ha-1 ) applied at two-week intervals; two or three sequential applications of topramezone (37 g ha-1 or 32 g ha-1 , respectively) + triclopyr ester (560 g ha-1 ) on three week intervals. Both experiments were conducted on stand of mature Midnight II Kentucky bluegrass naturally infested with CBG on a sandy loam soil at the Rutgers Plant Biology and Pathology Research and Extension Farm in Freehold, NJ. Treatments were arranged in a randomized complete block design with four replications and applied to 0.9 by 3.0 m plots using a CO2-powered single nozzle boom with 374 L ha-1 of water carrier and non-ionic surfactant (0.25% v/v) though an AI9504EVS nozzle. The first applications were made on October 15, 2015 and April 28, 2016 for the first and second experiment, respectively. Percent CBG reduction was determined by making an initial cover rating at the beginning of each experiment on a plot-by-plot basis and transforming subsequent CBG cover values to a percent reduction based on initial cover rating. Kentucky bluegrass injury was evaluated on a 1 (i.e., complete injury or death) to 9 (i.e., no injury) scale. All treatments for the first experiment initiated in October 2015 reduced CBG similarly by > 70% at 5 months after initial treatment (MAIT) in March 2016. All treatments containing mesotrione reduced CBG similarly by 65 to 94% in June 2016. By September 2016, 11 MAIT, mesotrione tank-mixtures containing amicarbazone or triclopyr ester reduced CBG 74 to 87%, although reductions provided by treatments containing mesotrione alone (50 to 64%) were similar. Treatments containing topramezone reduced CBG < 50% at 11 MAIT. All treatments reduced CBG cover compared to the non-treated control; CBG cover increased by 15% in the non-treated from the beginning of the experiment to 11 MAIT. Treatments containing amicarbazone injured KBG at 3 and 7 weeks after initial treatment only. For the second experiment initiated in April 2016, amicarbazone + mesotrione tank-mixtures reduced CBG by >80% at 2 MAIT; lesser CBG reductions were observed for all other treatments (< 50%) at 2 MAIT. By 5 MAIT, amicarbazone (50 g ha-1 ) + mesotrione tank-mixtures reduced CBG by 89% although this treatment caused severe Kentucky bluegrass injury from 4 to 10 weeks after initial treatment. Other treatments containing mesotrione reduced CBG similarly by 16 to 50% at 5 MAIT. Topramezone did not reduce CBG cover compared to the non-treated control at 5 MAIT. Creeping bentgrass cover increased by 57% from the beginning of the experiment to 5 MAIT in the non-treated control in the second experiment." |
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| Language: | English |
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| References: | 0 |
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| Note: | Reprint appears in Proceedings of the Seventy First Annual Meeting of the Northeastern Weed Science Society, Vol. 71 2017, p. 65
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Elmore, M. T., J. A. Murphy, B. S. Park, C. Mansue, and S. Alea. 2017. Herbicide programs for creeping bentgrass (Agrostis stolonifera) control in Kentucky bluegrass (Poa pratensis). p. 98. In Proceedings of the Second Annual Meeting of the Northeastern Plant, Pest, and Soils Conference. Philadelphia, Pennsylvania: January 3-6, 2017. s.l.: Northeastern Weed Science Society; Northeastern Regional Branch of the American Society of Agronomy, Crop Science Society of America, & Soil Science Society of America; and American Society of Horticultural Science - Northeastern Division. |
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| Web URL(s):
http://www.newss.org/wp-content/uploads/2017/07/2017-NEPPSC-Proceedings-FINAL.pdf#page=105
Last checked: 04/16/2018
Requires: PDF Reader
Notes: Item is within a single large file
https://www.newss.org/wp-content/uploads/2017/07/2017-NEWSS-Proceedings-FINAL.pdf#page=93
Last checked: 01/23/2023
Requires: PDF Reader
Notes: Item is within a single large file; Proceedings of the Seventy First Annual Meeting of the Northeastern Weed Science Society reprint |
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