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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2002_vol56.pdf#page=129
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: | Weed Management in cool-season turf with mesotrione |
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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. 129. |
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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: Weed control; Cool season turfgrasses; Mesotrione; Responses
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| Trade Names: | Callisto |
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| Abstract/Contents: | "Mesotrione is currently marketed as Callistoā¢ to control broadleaf and grass weeds in grain crops. Tolerance of grain crops suggests mesotrione may be a viable herbicide for the ornamental turfgrass market. Several studies were conducted to evalutate weed control and turfgrass response to the agricultural formulation of mesotrione. Three experiments in Blacksburg, VA evaluated various rates and sequential applications of mesotrione for nimblewill (Muhlenbergia schrebei J.F. Gmel), white clover (Trifolium repens L.), and ground ivy (Glechoma hederacea L.) control in bluegrass (Poa pratensis L.)/fescue (Festuca arundinacea Schreb.) turf. An additional experiment in Blacksburg evaluated mesotrione rates compared to quinclorac and MSMA for effects on common bermudagrass (Cynodon dactylon (L.) Pers 'Vaymont') and large crabgrass (Digitaria sanguinalis L.). A final experiment consisted of mesotrione and other herbicides applied to tillering goosegrass (Eleusine indica (L.) Gaertn.) on a fescue/bluegrass sod farm at Aylett, VA. All studies were conducted as randomized complete block designs with at least 3 replications. At 25 days after initial treatment (DAT), mesotrione at 0.15 and 0.25 lb ai/A controlled nimblewill at least 80% at both locations and was not different than two applications of 0.025 lb ai/A at 10-day intervals. However, nimblewill recovered by 85 DAT and mesotrione at 0.15 and 0.25 lb ai/A controlled nimblewill 34 and 40% respectively. The sequential applications of 0.025 lb ai/A controlled nimblewill 50% at 85 DAT when averaged over locations. Single applications of mesotrione at rates between 0.025 and 0.25 lb ai/A controlled ground ivy greater than 80% at 60 DAT but less than 32% at 85 DAT. The sequential application of 0.025 lb ai/A controlled ground ivy 60% at 85 DAT. Mesotrione at any rate did not control white clover. In a separate study, mesotrione at rates between 0.025 and 0.5 lb ai/A controlled tollering large crabgrass between 20 and 40% depending on rate. By comparison, two treatments of MSMA at 1.5 lb ai/A and one treatment of quinclorac at 0.75 lb ai/A controlled large crabgrass 95 and 83% respectively. Mesotrione controlled common bermudagras between 60 and 80% depending on rate at 7 DAT, control was not greater than 10% at 26 DAT due to bermudagrass regrowth. On a fescue/bluegrass sod farm, mesotrione at 0.15, 0.25, and 0.5 lb ai/A controlled tillering goosegrass 28, 18, and 22%, respectively 44 DAT. By comparison, isoxaflutole at 0.25 lb ai/A and fenoxaprop at 0.09 lb ai/A controlled goosegrass 83% and 80%, respectively while quinclorac at 1.0 lb ai/A controlled goosegrass 7%. Mesotrione at the rates evaluated in these studies did not injure Kentucky bluegrass. Transient discoloration of fescue was noted in some instances but never resulted in significant injury. Mesotrione selectively injured warm-season grasses such as common bermudagrass, goosegrass, large crabgrass, and nimblewill without damage to desirable cool-season turf grasses. However, single applications are unlikely to provide complete control. Thus, future research will evaluate sequential applications of mesotrione alone or mixed with other herbicides in an attempt to improve long-term weed control." |
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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. Weed Management in cool-season turf with mesotrione. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 56:p. 129. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2002_vol56.pdf#page=129
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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