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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2009 Proceedings-SWSS.pdf#page=474
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Bhowmik, P. C.;
Sarkar, D.;
Lycan, D. |
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| Author Affiliation: | Bhowmik and Sarkar: Plant, Soil and Insect Sciences, University of Massachusetts, Amherst, MA; Lycan: Syngenta Crop Protection, Baldwinsville, NY |
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| Title: | Safety of mesotrione to new seedings of cool-season turfgrass |
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| Section: | Turf and ornamentals
Other records with the "Turf and ornamentals" Section
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| Meeting Info.: | Orlando, Florida: February 9-12, 2009 |
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| Source: | 2009 Proceedings, Southern Weed Science Society. Vol. 62, 2009, p. 404. |
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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: Application rates; Enzyme inhibitors; Herbicide evaluation; Herbicide injury; Mesotrione; Percent living ground cover; Phytotoxicity; Research
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| Abstract/Contents: | "Mesotrione [2-(4-mesyl-2-nitrobenzoyl)-3-hydroxycyclohex-2-enone] is a pigment inhibitor herbicide that controls many common susceptible weed species by inhibiting the 4-HPPD enzyme. Recently, mesotrione received EPA registration for use on golf courses and sod farms. Our objectives were to establish use rate of mesotrione under various turfgrass environments and to identify any injury from mesotrione in newly seeded turfgrass species. Studies were conducted at the Turfgrass Research Center, MA as well as at various locations with Syngenta Crop Protection. In a new seeding trial in MA, the existing turfgrass was killed with glyphosate (1.12 kg ai ha-1) and the area was prepared for seeding. Perennial ryegrass was seeded on June 3, 2008. Plots were 1 by 3 m. Treatments were replicated three times in a randomized block design. The PRE and POST treatments were applied on June 4 and June 20, 2008, respectively. In 2007, various university trials included PRE applications of mesotrione (480 SC) at 175 or 280 g ai ha-1, siduron at 6700 g ai ha-1, and mesotrione applied PRE followed by POST at 175 g ai ha-1. In 2008, university trials including MA compared PRE followed by POST applications of mesotrione 480 SC, 240 SC, and 50 WG formulations at 175 or 280 g ai/ha. PRE applications of siduron were included in some 2008 trials. POST applications were typically made after the first mowing. Turfgrass species tested included Kentucky bluegrass, perennial ryegrass, tall fescue, and fine fescue. Most locations showed slight phytotoxicity from mesotrione in the form of bleaching within 1 to 3 weeks after an application. In some trials, phytotoxicity was more severe and was considered unacceptable, especially with the higher rate of 280 g ai ha-1 applied to more sensitive species such as perennial ryegrass. In MA, however, this rate of mesotrione was safe to perennial ryegrass. In MA trials, POST application of mesotrione treatments whether applied as a split treatment to PRE or POST alone exhibited slight foliar phytotoxicity (5 to 10%). Phytotoxicity typically dissipated within 1 to 2 weeks of first appearance of symptoms. Percent of turfgrass ground cover in mesotrione treated plots was similar to siduron or untreated plots in the majority of trials. The various formulations of mesotrione performed similarly across all 2008 trials. Mesotrione provided good to excellent control of various grass and broadleaf weeds common to cool-season turfgrass. Across all trials and turf species tested, mesotrione applied PRE followed by POST at 175 g ai ha-1 provided consistent weed control while minimizing the potential of phytotoxicity to newly established turfgrass." |
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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):
Bhowmik, P. C., D. Sarkar, and D. Lycan. 2009. Safety of mesotrione to new seedings of cool-season turfgrass. South. Weed Sci. Soc. Proc. 62:p. 404. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2009 Proceedings-SWSS.pdf#page=474
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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