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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2003_vol57.pdf#page=111
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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| Author(s): | Askew, S. D.;
Beam, J. B.;
Barker, W. L. |
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| Author Affiliation: | Virginia Tech, Blacksburg, Virginia |
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| Title: | Isoxaflutole and mesotrione for weed management in cool-season |
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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. 111. |
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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: Cool season turfgrasses; Herbicide efficacy; Herbicide evaluation; Isoxaflutole; Mesotrione; Weed control
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| Abstract/Contents: | "Isoxaflutole and mesotrione were included in 37 Virginia research trials between 2001 and 2003 and found to control a variety of broadleaf and grass weeds in cool-season turf. When treated at rates between 0.11 and 0.56 kg ai/ha, isoxaflutole and mesotrione can safely be used as foliar sprays or at seeding of Kentucky bluegrass (Poa pratensis L.), perennial ryegrass (Lolium perenne L.), and tall fescue (Festuca arundinacea Schreb.). Turfgrass injury increases with increasing rate and increasing air/soil temperature. Results indicate that single treatments of isoxaflutole are generally more effective than single treatments of mesotrione when applied at equivalent rates. A given rate of mesotrione controls weeds postemergence more effectively when split into two treatments at 2 -to 3-week intervals compared to a single full-rate treatment. Isoxaflutole at 0.21 kg ai/ha controlled white clover (Trifolium repens L.) 93% 63 days after treatment (DAT) and not different than label-recommended treatments of triclopyr plus clopyralid, quinclorac, and 2,4-D plus dicamba plus MCPP. Single treatments of mesotrione did not effectively control white clover. Isoxaflutole and mesotrione each at 0.17 kg ai/ha controlled ground ivy (Glechoma hederacea L.) 95% 25 DAT. However, both herbicides controlled ground ivy less than 60% 95 DAT. Spring treatments of isoxaflutole and mesotrione each at 0.28 kg ai/ha applied twice a week at 2- to -4 week intervals controlled quackgrass [Elytrigia repens (L.) Nevski] 70% and 56% respectively 12 WAT and creeping bentgrass (Agrostis stolonifera L.) 70% 136 DAT. Isoxflutole at 0.56 kg ai/ha did not control common bermudagrass [Cynodon dactylon (L.) Pers.] 146 DAT while the same amount of herbicide subdivided into 5 monthly treatments controlled bermudagrass 93%. Mesotrione suppressed bermudagrass but did not control bermudagrass. A single treatment of isoxaflutole at 0.17 kg ai/ha or mesotrione at 0.28 kg ai/ha controlled nimblewill (Muhlenberquia schreberi i.F, Gmel.) at least 95% 21 DAT. Isoxaflutole at 0.17 and 0.28 kg ai/ha controlled flowering goosegrass [Eleusine indica (L.) Gaertn.] at least 78% 44 DAT and equivalent to fenoxaprop at 0.1 kg ai/ha. Mesotrione at 0.28 kg ai/ha controlled 10- cm diameter Virginia buttonweed (Diodia virginiana L.) 96% 47 DAT and 16-cm diameter Virginia buttonweed 68% 40 DAT. Isoxaflutole at 0.28 kg ai/ha and mesotrione at 0.45 kg ai/ha controlled large crabgrass [Digitaria sanguinalis (L.) Scop.] at least 85% 50 DAT and equivalent to fenoxaprop at 0.1 kg ai/ha. Isoxaflutole at 0.17 kg ai/ha applied PRE controlled green foxtail [Sertaria viridis (L.) Beauv.], giant foxtail (S.faberi Herrm.), yellow foxtail [S. glauca R (L.) Beauv.], goosegrass, and large crabgrass at least 95 % 70 DAT in greenhouse experiments. In spring-seeded tall fescue, mesotrione and isoxflutole PRE at 0.28 kg ai/ha controlled smooth crabgrass [D.ischaemum (Scherb. ex Schweig.) Schreb.], yellow seedling woodsorrel (Oxalis stricta L.), seedling broadleaf plantain (Plantago major L.), common lambsquarters (henopodium album L.) and henbit (Lamium amplexicaule L.) equivalent or better than siduron PRE followed by 2,4-D plus dicamba plus MCPP. In greenhouse experiments, increasing mesotrione PRE rates between 0.03 and 0.56 kg ai/ha increased Kentucky bluegrass, tall fescue, and perennial ryegrass injury. However, only Kentucky bluegrass was persistently injured for more than 14 DAT when rates were 0.28 kg ai/ha or greater. In these greenhouse studies, pendimethalin PRE at 1.7 kg ai/ha completely killed all turfgrass species." |
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| Language: | English |
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| References: | 0 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Askew, S. D., J. B. Beam, and W. L. Barker. 2003. Isoxaflutole and mesotrione for weed management in cool-season. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 57:p. 111. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2003_vol57.pdf#page=111
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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