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Web URL(s): | http://www.newss.org/proceedings/proceedings_2010.pdf#page=25 Last checked: 07/22/2013 Requires: PDF Reader Notes: Item is within a single large file |
Publication Type:
| Report |
Content Type: | Abstract or Summary only |
Author(s): | McNulty, B.;
Jester, J.;
Askew, S.;
Mack, B. |
Author Affiliation: | Virginia Tech, Blacksburg, VA |
Title: | Interaction of plant growth regulators and cumyluron on golf putting greens |
Meeting Info.: | Cambridge, MA: January 4-7, 2010 |
Source: | Proceedings: 64th Annual Meeting of the NortheasternWeed Science Society. Vol. 64, 2010, p. 9. |
Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
# of Pages: | 1 |
Keywords: | TIC Keywords: Agrostis stolonifera; Cumyluron; Herbicide evaluation; Herbicide injury; Herbicide interaction; Herbicide-growth regulator combinations; Plant growth regulators; Poa annua control; Tank mix
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Abstract/Contents: | "Plant growth regulators (PGR) are used extensively on golf fairways and putting greens to improve turfgrass quality, decrease clipping production, inhibit seedhead development, suppress annual bluegrass (Poa annua) and improve turf stress tolerance. Cumyluron is a new herbicide that is under evaluation by Helena Chemical Company for annual bluegrass control in creeping bentgrass (Agrostis stolonifera) fairways and putting greens. Since PGR use is common on golf putting greens and cumyluron potentially will be used on putting greens, studies were conducted to test for interaction from PGR and cumyluron tank mixtures. Two studies were conducted in 2009; one in Blacksburg, VA on an A-1 creeping bentgrass putting green at the Glade Rd. Research Facility and the other on a creeping bentgrass putting green of unknown variety at Massanutten Golf Course. The green at Massanutten had 30% cover of annual bluegrass at trial initiation and the green at Glade Rd. had less that 1% annual bluegrass. The Massanutten trial was treated on April 2, 2009 and the Glade Rd. trial was treated on April 16, 2009. Studies were arranged in a randomized complete block design with 1.2 m2 plots and 3 replications. A two by six factorial treatment arrangement was used to test all possible combinations of cumyluron and PGRs. The first factor was cumyluron with 2 levels (none and 1.72 kg ai/ha) and the second factor was PGR with 6 levels including: trinexapac-ethyl (0.048 kg ai/ha), ethephon (3.82 kg ai/ha) paclobutrazol (7.64 kg ai/ha), fluprimidol (0.28 kg ai/ha), mefluidide (0.14 kg ai/ha) and no PGR. Experimental objectives were to evaluate effects of products applied alone and in tank mixture on visually-estimated turf quality, color, and injury and normalized difference vegetative index (NDVI) measurements of turf canopies. At Massanutten, cumyluron did not increase turf injury when mixed with any PGR. At Virginia Tech, creeping bentgrass injury did not exceed 12% at any evaluation, however, cumyluron increased creeping bentgrass injury in a few instances. Although these increases in turf injury at Virginia Tech were statistically significant, the levels of injury were low and considered acceptable in all cases. At Massanutten 21 days after treatment (DAT) mefluidide injured putting green turf 45% when applied alone and 2% when mixed with cumyluron. This significant decrease in turf injury accompanied a concomitant increase in turf color and NDVI readings. At Virginia Tech, turf color and NDVI readings did not significantly differ between treatments at any time. The apparent safening of creeping bentgrass to mefluidide by cumyluron warrants further investigation as turf injury by mefluidide is a common concern on golf putting greens and application times of the two products would overlap; allowing for tank mixtures." |
Language: | English |
References: | 0 |
Note: | This item is an abstract only! |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): McNulty, B., J. Jester, and S. Askew. 2010. Interaction of plant growth regulators and cumyluron on golf putting greens. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 64:p. 9. |
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| Web URL(s): http://www.newss.org/proceedings/proceedings_2010.pdf#page=25 Last checked: 07/22/2013 Requires: PDF Reader Notes: Item is within a single large file |
| MSU catalog number: SB 610 .N62 v. 60 |
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