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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2010.pdf#page=95
Last checked: 07/22/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Post, A.;
McDonald, S.;
Askew, S. |
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| Author Affiliation: | Virginia Tech, Blacksburg, VA |
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| Title: | Herbicide combinations to improve visibility and golf ball advancement in fine fescue secondary roughs |
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| Meeting Info.: | Cambridge, MA: January 4-7, 2010 |
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| Source: | Proceedings: 64th Annual Meeting of the NortheasternWeed Science Society. Vol. 64, 2010, p. 79-80. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Ball lie; Fine fescues; Growth regulator evaluation; Herbicide application; Herbicide combinations; Herbicide evaluation; Secondary rough; Thinning
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| Abstract/Contents: | "The use of "non-mow" areas on golf courses has increased in recent years due to heightened awareness of environmental benefits and economic restraints. Although most turf managers attempt to establish perennial grasses considered indigenous to the area, such attempts often fail and fine-leaf fescues are planted to fill voided areas. Little information is available for weed control recommendations in non-mow areas. Fine fescue (Festuca rubra) can create a dense stand of turf in secondary roughs, making it difficult or even impossible to locate and advance a golf ball. Three trials, conducted in Blacksburg, VA evaluated fine fescue tolerance and weed control from glyphosate. In addition, several plant growth regulators (PGRs) and glyphosate were evaluated for ability to thin fine fescue stands in secondary roughs to improve golf ball visibility and advancement. Experiments were established in a randomized complete block design with eight treatments replicated three times. Treatments in two of the trials included five rates of glyphosate: 0.28, 0.42, 0.56, 0.84, and 1.12 kg ai/ha and two tank mixtures: glyphosate (0.56 kg/ha) + triclopyr (1.12 kg ae/ha) or glyphosate (0.56 kg/ha) + fluroxypyr (0.42 kg ae/ha). The third trial included PGRs: mefluidide(0.26 and 0.65 kg ai/ha), trinexapac-ethyl (0.18 kg ai/ha) and ethephon (3.81 kg ai/ha) alone, and tank mixtures: trinexapac ethyl + ethephon and mefluidide + glyphosate, as well as glyphosate alone at 0.56 kg ai/ha as a standard for comparison. A trial by treatment interaction was significant for the glyphosate trial due to severe fine fescue injury from all treatments at the Glade Road Facility (GRF) but not at the Brush Mountain (BM) site. Fine fescue injury was greatest at 3 weeks after treatment (WAT). At 3 WAT, the lowest rate of glyphosate injured fine fescue 63 and 3% at GRF and BM, respectively. Assuming 30% injury as an acceptable threshold, all glyphosate treatments exceeded threshold at GRF for a period of nine weeks but only rates greater than 0.56 kg/ha exceeded that threshold any time at BM. When triclopyr was mixed with 0.56 kg/ha glyphosate, fine fescue injury was decreased by at least half, and significantly at both locations. Fine fescue color ratings generally mirrored injury ratings. Except for the lowest rate in one trial, glyphosate at all rates and in all tank-mixes significantly reduced fine fescue density to between 6 and 67% of original density. In the PGR trial, mefluidide injured fine fescue 27 to 33% 3 WAT, while trinexapac-ethyl and ethephon alone did not injure fine fescue. PGR mixtures with 0.56 kg/ha glyphosate injure fine fescue 18 to 77% over time. At 9 WAT all PGR treatments injured fine fescue 10% or less, but differences in canopy structure and appearance were noted compared to the non-treated and glyphosate treatments. Mefluidide alone and trinexapac-ethyl alone did not significantly reduce fine fescue density at any rate. Trinexapac-ethyl + ethephon, ethephon alone, and mefluidide + glyphosate significantly decreased stand density to 50%, 58%, and 60% of original density, respectively, while maintaining acceptable turf color and appearance. Although glyphosate and several PGR treatments significantly thinned fine fescue stands in secondary roughs and altered canopy structure, few differences were noted in golf ball visibility and golfer accuracy evaluations. These trials suggest glyphosate rates should not exceed 0.56 kg/ha and addition of triclopyr could decrease injury responses while improving broadleaf weed control. Furthermore, use of ethephon and mefluidide could improve visibility and canopy density from a golfer's perspective but more studies are needed to determine rates and application frequency." |
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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):
Post, A., S. McDonald, and S. Askew. 2010. Herbicide combinations to improve visibility and golf ball advancement in fine fescue secondary roughs. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 64:p. 79-80. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2010.pdf#page=95
Last checked: 07/22/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 v. 60 |
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