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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2003_vol57.pdf#page=114
Last checked: 07/23/2013
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): | Bohwmik, P. C.;
Riego, D. C. |
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| Author Affiliation: | University of Massachusetts, Amherst, Massachusetts and Monsanto Company, Carmel, Indiana |
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| Title: | Management alternatives for glyphosate resistant creeping bentgrass. |
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| Section: | Turfgrass and plant regrowth regulates
Other records with the "Turfgrass and plant regrowth regulates" Section
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| Meeting Info.: | Hyatt Regency Hotel, Baltimore, MD: January 6-9, 2003 |
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| Source: | Proceedings of the 57th Annual Meeting of the NortheasternWeed Science Society. Vol. 57, 2003, p. 114. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Glyphosate; Herbicide efficacy; Herbicide evaluation; Herbicide resistance; Weed control
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| Abstract/Contents: | "Creeping bentgrass (Agrostis palustris Huds.) is a self-sterile, wind pollinated perennial grass that is native to Eurasia but has become naturalized in North America. Creeping bentgrass is one of the most tolerant cool-season turfgrasses which can tolerate continuous, close mowing at heights as low as 0.2 inch. This species is widely used for putting greens and fairways on the golf courses of temperate climates around the world. The development of transgenic creeping bentgrass resistant to glyphosate has led to our research to identify alternative strategies for control of the Agrostis species. Field studies were conducted in 2002 with several modes of action of herbicides either on 1-year old or 4-year old creeping bentgrass stands. All treatments were applied POST to creeping bentgrass with a CO2-backpack sprayer at a pressure of 22 psi in 50 gpa. Turfgrass was maintained at a 0.5 inch cutting height. Foliar injury to turfgrass species was visually estimated on a scale of 0 to 100% (0 = no injury and 100 = completely dead) over a 16-wk period. Glyphosate at 1.5 lb/A controlled one-year old susceptible creeping bentgrass over 98% 1 week after treatment (WAT) and maintained its control up to 16 weeks. Fluazifop at 0.25 lb/A and sethoxydim at 0.25 lb/A controlled only 27 to 37% 1 WAT and 70 to 85% control 8 WAT, respectively. The sequential treatments of either of these herbicides 4 weeks after initial application did not improve creeping bentgrass control. Clethodim at 0.25 lb/A applied once or applied in sequential applications 4 weeks after the initial application controlled creeping bentgrass (>97%) up to 16 WAT. Isoxaflutole at 0.25 lb/A controlled 50, 90 and 90% of creeping bentgrass sod 1, 2, 4 WAT, respectively, and the control declined with time. Only the sequential applications of isoxaflutole at 0.25 lb/A followed by an application of isoxaflutole at 0.25 lb/A 4 weeks after the initial treatment controlled creeping bentgrass (>97%) up to 16 WAT. In another trial on a 4-year old creeping bentgrass stand, sequential applications of glyphosaate at 1.5 lb/A, clethodim 0.375 lb/A, fluazifop at 0.25 lb/A and sethoxydim at 0.25 lb/A 4 and 8 weeks after the initial application resulted in excellent control (>99%) of creeping bentgrass 8 WAT. Isoxaflutole at 0.2 lb/A resulted in 93% control 2 WAT, while the control was only 79% 8 WAT. Sequential applications of 0.1 lb/A of isoxaflutole followed by an application of isoxaflutole at 0.1 lb/A 4 weeks later resulted in 87 and 53% control of creeping bentgrass 2 and 8 WAT, respectively. Mesotrione at 0.2 lb/A resulted in 87% control 2 WAT, while creeping bentgrass control was only 45% 8 WAT. Sequential applications of mesotrione at 0.1 lb/A followed by a 0.1 lb/A 4 weeks later resulted in 91% control 2 WAT, although control of creeping bentgrass declined to 67% 8 WAT. These results indicate alternative management strategies to control creeping bentgrass under various environments." |
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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):
Bohwmik, P. C., and D. C. Riego. 2003. Management alternatives for glyphosate resistant creeping bentgrass.. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 57:p. 114. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2003_vol57.pdf#page=114
Last checked: 07/23/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 v. 57 |
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