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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2002_vol56.pdf#page=127
Last checked: 07/24/2013
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): | Askew, S. D.;
Beam, J. B. |
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| Author Affiliation: | Virginia Tech, Blacksburg, VA |
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| Title: | Turfgrass response to flumioxazin, mesotrione, and rimsulfuron |
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| Meeting Info.: | Loews Hotel, Philadelphia, PA: January 7, 8, 9, and 10, 2002 |
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| Source: | Proceedings of the 56th Annual Meeting of the NortheasternWeed Science Society. Vol. 56, 2002, p. 127-128. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Flumioxazin; Mesotrione; Rimsulfuron; Responses; Herbicides; Cool season turfgrasses; Warm season turfgrasses
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| Abstract/Contents: | "Rimsulfuron was registered for weed control in bermudagrass (Cynodon dactylon (L.) Pers.) in October 2001. Flumioxazin and mesotrione are agricultural herbicides that do not control certain grass species and could be useful in ornamental turfgrass for selective weed control. Several field and greenhouse studies were conducted in Blacksburg, VA to evaluate cool and warm-season turfgrass response to flumioxazin, mesotrione, and rimsulfuron applied with 0.25% nonionic surfactant. At 1 week after treatment (WAT) flumioxazin at 6 rates between 0.03 and 0.25 lbs ai/A injured established zoysiagrass (Zoysia japonica Steud. 'Mayer') between 62 and 88% and bermudagrass 'Vaymont' between 25 and 45%. At 2 WAT, bermudagrass had recovered and injury was not greater than 10%. However, zoysiagrass injury 2 WAT was 80 to 100%. The same flumioxazin rate range was evaluated in the greenhouse on creeping bentgrass (Agrostis palustris Huds 'L-93', 'Penncross', 'Shouthshore'), Perenniel ryegrass (Lolium perenne L.), Kentucky bluegrass (Poa pratensis L.), and tall fescue (Festuca arundinacea Schreb.). Plants were grown from seed and grass had been clipped at least 10 times prior to treatment. Flumioxazin caused unacceptable injury (13 to 35%) of all species evaluated. Injury consisted of a rapid necrosis of upper grass blades followed by thinned turf. A field experiment was conducted to evaluate response of overseeded perennial ryegrass and Kentucky bluegrass to mesotrione. Mesotrione was applied at 0.001, 0.025, 0.075, and 0.15 lb ai/A at 60, 30, 15, and 1 day prior to overseeding (DPO). At 14 DPO, glyphosate at 1 lb/A was applied to kill existing turf. The experimental area was vertical mowed in two directions and seed were applied with a drop spreader at 200 lb ai/A in strips to allow visual assessment of turf injury. Mesotrione did not affect ryegrass and bluegrass emergence when applied at any rate or timing. Pendimethalin at 1.5 lb ai/A was included as a comparison treatment and only reduced turfgrass coverage when applied 1 DPO. Bluegrass and ryegrass coverage was 95% or greater in all treatments except pendimethalin applied 1 DPO where bluegrass coverage was 35% and ryegrass coverage was 88%. Aggressive vertical mowing prior to overseeding could have decreased herbicidal injury in this study. However, results suggest that bluegrass and ryegrass may be overseeded in the fall if mesotrione is used to remove invasive perennial grasses in the summer. Rimsulfuron was applied at 0.008, 0.016, 0.032, 0.048, 0.064, and 0.128 lb ai/A in field plots of Vaymont bermudagrass and Mayer zoysiagrass. Visual assessment of turf quality and injury were made and clipping biomass was collected. No injury was noted on either turf species and clipping dry weights from all plots including nontreated controls were equal at 1, 2, and 4 WAT. In a separate field study, MSMA applied twice at 1.0 and 2.0 lb ai/A, quinclorac at 0.75 and 1.5 lb ai/A, and rimsulfuron at 0.016 and 0.032 lb ai/A were applied to newly sprigged 'Tifway' and 'Midiron' bermudagrass. At 10 days after treatment (DAT), quinclorac and rimsulfuron injured Tifway bermudagrass between 8 and 15% and more than MSMA. The injury manifested as slight turf chlorostis. At 30 DAT , quinclorac and rimsulfuron injured Tifway bermudagrass 15 and 6% respectively. MSMA and rimsulfron never injured Midiron bermudagrass while quinclorac casued 25% injury at 10 DAT and 50% injury at 30 DAT. These results suggest more data is needed to determine response of bermudagrass hybrids to quinclorac and rimsulfuron." |
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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):
Askew, S. D., and J. B. Beam. 2002. Turfgrass response to flumioxazin, mesotrione, and rimsulfuron. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 56:p. 127-128. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2002_vol56.pdf#page=127
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 610 .N62 v. 53 |
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