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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2012 Proceedings-SWSS.pdf#page=289
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): | Venner, K. A.;
Post, A.;
Askew, S.;
Koo, S. |
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| Author Affiliation: | Venner, Post and Askew: Virginia Tech, Blacksburg, VA; Koo: Moghu Research Center, Daejeon, South Korea |
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| Title: | Creeping bentgrass putting green response to methiozolin and plant growth regulator mixtures |
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| Section: | Graduate student contest
Other records with the "Graduate student contest" 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. 217. |
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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: Agrostis stolonifera; Golf greens; Plant growth regulator combinations; Methiozolin; Plant growth regulators; Poa annua control; Selective weed control; Turfgrass quality
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| Abstract/Contents: | "Methiozolin is a new herbicide being investigated for selective removal of annual bluegrass in creeping bentgrass putting greens. For management purposes, plant growth regulators (PGRs) are often utilized to maintain greens and suppress annual bluegrass growth. Inevitably, PGRs will either be tank-mixed or applied concurrently with methiozolin applications on putting greens. Research is needed to evaluate interactions between methiozolin and various PGR products used on greens. The objective of this study was to examine effects of several popular PGRS on annual bluegrass control and creeping bentgrass putting green quality when applied alone or with methiozolin. Studies were conducted at Draper Valley Country Club (DV), Draper,VA and at the Glade Road Research Facility (GR) in Blacksburg, VA beginning in early April 2011. Single applications of ethephon (Proxy) at 1900 g ai ha-1, flurprimidol (Cutless) at 280 g ai ha-1, mefluidide (Embark 2S) at 70 g ai ha-1, paclobutrazol (Trimmit) at 210 g ai ha-1 and trinexapac-ethyl (Primo MAXX) at 48 g ai ha-1 were made with or without methiozolin (MRC-01) at 1000 g ai ha-1. At GR, the creeping bentgrass cultivar was 'A4' and annual bluegrass cover was less than 1% of in all plots at trial initiation. The interaction of methiozolin and PGR was not significant for creeping bentgrass injury at any time (P>0.05). The main effect of PGR was significant (P<0.05) and at 2 weeks after initial treatment (WAIT), mefluidide injured turfgrass 18% and more than all other PGRs. Paclobutrazol and flurprimidol injured creeping bentgrass 7 to 9% and more than all other PGRs, except mefluidide. At 3 WAIT, mefluidide injured turf 19%, paclobutrazol, 15% and flurprimidol, 11%. Normalized difference vegetation index (NDVI) was lowest from the three most injurious PGRs but was not influenced by methiozolin. At DV, the creeping bentgrass cultivar was 'Penncross' and 'L93' and annual bluegrass cover ranged from 32 to 50% at trial initiation. The interaction of methiozolin and PGR was significant (P<0.05) for annual bluegrass control but not for creeping bentgrass injury. At 1 WAIT, mefluidide and paclobutrazol were the only PGRs that significantly injured creeping bentgrass when compared to the nontreated. NDVI did not follow trends in creeping bentgrass injury due to annual bluegrass phytotoxicity from methiozolin and certain PGRs. By 8 WAIT, annual bluegrass control with PGR's alone decreased to less than 15%, and methiozolin alone or mixed with any PGR effectively controlled annual bluegrass more than 50%, with the exception of only 10% control with methiozolin plus ethephon. Based on these data, methiozolin does not appear to interact with PGRs to cause more creeping bentgrass injury; however, methiozolin efficacy on annual bluegrass control could be antagonized by ethephon. Future research will further evaluate the methiozolin/ethephon interaction." |
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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):
Venner, K. A., A. Post, S. Askew, and S. Koo. 2012. Creeping bentgrass putting green response to methiozolin and plant growth regulator mixtures. South. Weed Sci. Soc. Proc. 65:p. 217. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2012 Proceedings-SWSS.pdf#page=289
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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