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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=329
Last checked: 08/12/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Cox, M.;
Venner, K.;
Askew, S. D. |
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| Author Affiliation: | Virginia Tech, Blacksburg, VA |
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| Title: | Crabgrass and goosegrass control with dithiopyr and indaziflam |
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| Section: | Weed management in turf
Other records with the "Weed management in turf" Section
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| Meeting Info.: | Houston, Texas: January 28-30, 2013 |
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| Source: | Proceedings of the Southern Weed Science Society: 66th Annual Meeting. Vol. 66, 2013, p. 242. |
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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: Comparisons; Crabgrass control; Dithiopyr; Goosegrass control; Herbicide evaluation; Indaziflam; Preemergence herbicides; Prodiamine
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| Trade Names: | Specticle; Dimension 2EW; Barricade |
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| Abstract/Contents: | "Dimension® 2EW is a newer formulation of dithiopyr from Dow AgroSciences that is a widely used pre-emergence herbicide for crabgrass in the transition zone and Northern U.S. Specticle® (indaziflam) is a new herbicide from Bayer CropScience, utilizing low application rates and a new mode of action (cellulose biosynthesis inhibitor), that has shown excellent results when used as a PRE for crabgrass and goosegrass in warm-season turfgrasses. The objective of this study was to determine how the two herbicides compare to each other for pre-emergent smooth crabgrass and goosegrass control given various rates and repeat treatment programs, while comparing their results to the commonly used standard Barricade® (prodiamine). Two studies were conducted as randomized complete block designs and initiated on March 15, 2012 at Independence Club in Richmond, VA and March 29, 2012 at the Turfgrass Research Center (TRC) of Virginia Tech in Blacksburg, VA. The study site at Independence Club was infested with goosegrass and the site at the TRC was infested with smooth crabgrass. Treatments included: dithiopy at 426 g ai ha-1 applied twice, dithiopyr at 560 g ai ha-1 fb 426 g ai ha-1, dithiopyr at 280 g ai ha-1 fb 560 g ai ha-1, dithiopyr at 426 g ai ha-1 fb 560 g ai ha-1, all at six-week intervals; dithiopyr at 560 g ai ha-1 applied twice at a three-week interval, indaziflam at 35 g ai ha-1 applied once, indaziflam at 35 g ai ha-1 applied twice at a six-week interval, indaziflam at 62 g ai ha-1 applied twice at a three-week interval, and prodiamine at 840 g ai ha-1 applied once on April 2, 2012. Turfgrass was 'Midlawn' bermudagrass at Independence Club and goosegrass pressure was inconsistent and seemed to follow a gradient. Turfgrass at the TRC was 'Tifway' bermudagrass and smooth crabgrass late-season pressure was consistently above 30% across the study site. No treatment in either location injured bermudagrass or delayed greenup at any timing. Smooth crabgrass cover was 3.5% or below, 27 weeks after initial treatment (WAIT), and was not significantly different between treatments. Smooth crabgrass cover in the untreated check was 34%, indicating a minimum of 90% reduction in crabgrass cover by all herbicide treatments 27 WAIT. One application of indaziflam at the 35 or 62 g ai ha-1 rate or two applications at a six-week interval with the 35 g ai ha-1 rate and a three-week interval with the 62 g ai ha-1 rate controlled goosegrass completely 13 WAIT. These treatments, however, were not significantly different from the following: prodiamine once (840 g ai ha-1), dithiopyr once (560 g ai ha-1), dithiopyr twice (426 fb 560 g ai ha-1), and the untreated check. Dithiopyr applied twice (426 fb 560 g ai ha-1) at a six-week interval was also not significantly different from sequential applications at a six-week interval of dithiopyr (426 g ai ha-1 applied twice), dithiopyr (560 fb 426 g ai ha-1), dithiopyr (560 g ai ha-1 applied twice), and one application of dithiopyr (560 g ai ha-1). Single applications of indaziflam controlled goosegrass better than single applications of dithiopyr at 13WAIT; however, there were no significant differences 27 WAIT possibly due to overspray of diclofop mid-season by golf course staff. These data suggests that Dimension® 2EW controls smooth crabgrass in bermudagrass equivalent to Specticle® 20WSP and Barricade® 4L at all rates and timings tested. It also shows that delayed applications of Dimension® 2EW are not as effective on smooth crabgrass as early timing applications. Geographical regions with short growing seasons like the transition zone of the U. S. and north may not need sequential applications of these herbicides to obtain season-long control of annual grassy weeds." |
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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):
Cox, M., K. Venner, and S. D. Askew. 2013. Crabgrass and goosegrass control with dithiopyr and indaziflam. South. Weed Sci. Soc. Proc. 66:p. 242. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2013 Proceedings-SWSS.pdf#page=329
Last checked: 08/12/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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