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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2004_vol58.pdf#page=100
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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| Content Type: | Abstract or Summary only |
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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: | Dazomet for renovating turfgrass infested with nimblewill |
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| Meeting Info.: | Marriott Cambridge Center, Cambridge, Massachusetts: January 5-8, 2004 |
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| Source: | Proceedings: NortheasternWeed Science Society. Vol. 58, 2004, p. 100. |
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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: Comparisons; Dazomet; Glyphosate; Herbicide efficacy; Herbicide evaluation; Muhlenbergia schreberi; Turf renovation; Weed control; Weed infestation
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| Abstract/Contents: | "Current extension recommendations from several universities in the northern US indicate that nimblewill (Muhlenbergia schreberi J.F. Gmel.) control requires turfgrass renovation with a nonselective herbicide. Glyphosate is the most commonly recommended herbicide for such renovation. However, single glyphosate treatments rarely control nimblewill completely. Often, homeowners are faced with more severe nimblewill infestations after treating with glyphosate and seeding turfgrass anew since lack of turfgrass competition allows surviving nimblewill to spread rapidly. Many sources therefore recommend that multiple glyphosate treatments be applied prior to turfgrass seeding. Since it takes as long as four weeks to observe considerable nimblewill recovery between treatments, multiple glyphosate treatments usually delay lawn renovation for over two months. A quicker solution is needed for nimblewill control and turfgrass renovation. Dazomet and methyl bromide are nonselective herbicides registered as Basamid® and Bromogas®, respectively for control of weeds and pathogenic microorganisms in turfgrass and other crops. Since dazomet is more available to homeowners and lawn care professionals than methyl bromide, it seems a likely alternative to glyphosate for nimblewill control and turfgrass renovation. Studies were conducted at Blacksburg, VA to evaluate the effect of glyphosate pretreatment, tillage, and plastic on nimblewill control with dazomet compared to methyl bromide and glyphosate alone. The study area consisted of Kentucky bluegrass (Poa pratensis L.) with at least 30% cover of nimblewill. Studies were conducted twice in the season to simulate timings for spring and fall seeding of cool-season grasses. Each study was arranged as a randomized complete block with a 2 x 2 x 2 factorial treatment design and three comparison treatments. Factors consisted of dazomet applied at 392 kg ai/ha with or without the use of glyphosate at 1.1 kg ai/ha two weeks prior to dazomet treatment, tillage to 15 cm to incorporate dazomet, and plastic to cover treated plots after irrigation. These eight treatments of the factorial design were compared to three treatments including a nontreated control; glyphosate alone; and glyphosate followed by tillage, methyl bromide at 1355 kg ai/ha, and plastic. Glyphosate did not control nimblewill more than 10% in spring since nimblewill was still partially dormant. Glyphosate controlled nimblewill 90% when applied in late summer; however, glyphosate did not significantly affect nimblewill control with dazomet systems in either study. All dazomet treatments completely controlled nimblewill 5 weeks after treatment (WAT) except when neither tillage nor plastic was used. Dazomet surface applied without tillage or plastic controlled nimblewill 90 and 76% 5 WAT in spring and fall, respectively. Methyl bromide completely controlled nimblewill in both studies. Although long-term ratings are needed to draw conclusions, initial results indicate that dazomet could be an effective nimblewill control as long as tillage or plastic is utilized." |
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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., J. B. Beam, and W. L. Barker. 2004. Dazomet for renovating turfgrass infested with nimblewill. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 58:p. 100. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2004_vol58.pdf#page=100
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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