Full TGIF Record # 104027
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Web URL(s):http://www.newss.org/proceedings/proceedings_2005.pdf#page=102
    Last checked: 07/22/2013
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Riego, D. C.; Williamson, D. H.; Graham, J. C.
Author Affiliation:Monsanto Co., Carmel, Indiana
Title:Rough stalk bluegrass control in creeping bentgrass with MON 44951 75WDG in midwest and northeast U.S.
Section:Turfgrass and plant growth regulators
Other records with the "Turfgrass and plant growth regulators" Section
Meeting Info.:Capital Hilton, Washington, D.C.: January 3-6, 2005
Source:Proceedings: NortheasternWeed Science Society. Vol. 59, 2005, p. 88.
Publishing Information:Ithaca, NY: Northeastern Weed Science Society
# of Pages:1
Keywords:TIC Keywords: Herbicide profile; Discoloration; Poa trivialis; Weed control; Agrostis stolonifera; Herbicide evaluation; Sulfosulfuron; Acetolactate synthase; Weed profile; Application rates; Application timing
Trade Names:Certainty
Abstract/Contents:"The chemical name for MON 44951 is sulfosulfuron. It belongs to the sulfonylurea urea class of herbicide chemistry, and works in the plants as an ALS or acetolactate syntase inhibitor of amino acids needed for plant growth. MON 44951, formulated as 75% water dispersable granule, is absorbed both by plant roots and shoots, and hence provides both pre- and postemergence weed control activity. Weed control symptomology is very slow - weed growth stops immediately after application, followed by growing points and leaves turning purple, and then followed by browning and desiccation of plant tissues. The process takes about 3-4 weeks. Poa trivialis or roughstalk bluegrass has become a serious weed problem in golf course tees, fairways, roughs, in athletic fields, and in sod production fields. Poa trivialis infestation in golf courses and athletic fields results in unsightly look and poor turf quality. The weed alters mowing and irrigation schedule due to its aggressive and prolific growth habit. It does not mow well and does not respond to turf plant growth regulators (PGR) hence requiring a need to mow more frequently. It encroaches and dominates creeping bentgrass, browns in the summer resulting in very poor golf course turf quality. There is no current herbicide solution to control Poa trivialis. In sod production field, Poa trivialis infestation cause significant loss of quality and value of sod. Various formulations of MON 44951 have been evaluated for Poa trivialis control as early as 1999 in various university trials. Results indicate that single to sequential application of MON 44951 at 0.01 lb ai/A + 0.25% v/v non-ionic surfactant applied in 20-40 GPA provides Poa trivialis control. It is not clear how much of the control can be attributed to either pre- or postemergence activity. In 2004, MON 44951 was evaluated in large plot trials under commercial user and end-user conditions using a federally approved label in various golf course fairways in the Midwest and Northeast US. Excellent Poa trivialis control was obtained from single or sequential treatments of MON 44951. Slight to pronounced discoloration of creeping bentgrass, in the form of yellowing or browning, was observed around 7-10 days after application, stayed approximately 7-14 days, and then the turf fully recovered. Discoloration is a typical effect of sulfonylurea products, and may also be due to heavy clay soil, to cool temperatures, and excessive moisture after application. Open areas also resulted due to Poa trivialis control of largely infested areas treated. Management of these areas could require overseeding or sodding in some cases. MON 44951 will be commercialized under the trade name Certainty® herbicide. MON 44951 has shown excellent potential to control or manage Poa trivialis weed problem in golf courses, athletic, and sod production fields."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Riego, D. C., D. H. Williamson, and J. C. Graham. 2005. Rough stalk bluegrass control in creeping bentgrass with MON 44951 75WDG in midwest and northeast U.S.. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 59:p. 88.
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http://www.newss.org/proceedings/proceedings_2005.pdf#page=102
    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. 57
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