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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2010 Proceedings-SWSS.pdf#page=189
Last checked: 08/01/2013
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.;
Jester, J. L.;
Norton, L.;
Spak, D. |
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| Author Affiliation: | Askew and Jester: Virginia Tech, Blacksburg; Norton and Spak: Bayer Environmental Sciences, Clayton, NC |
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| Title: | Application timing affects annual bluegrass control with 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.: | Little Rock, Arkansas: January 25-27, 2010 |
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| Source: | 2010 Proceedings, Southern Weed Science Society. Vol. 63, 2010, p. 139. |
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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: Application rates; Cellulose products; Cultivar evaluation; Cynodon dactylon; Indaziflam; Poa annua control; Postemergence herbicides; Simazine; Zoysia japonica
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| Cultivar Names: | Riviera; Zenith |
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| Trade Names: | Specticle |
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| Abstract/Contents: | "Indaziflam (BCS-AA10717, formerly AE 1170437) is a new herbicide pending registration for turfgrass, ornamentals, and industrial vegetation management. The proposed trade name for turfgrass is Specticle Herbicide and is expected to be marketed in spring 2010. Indaziflam is a cellulose biosynthesis inhibitor that is active at lower use rates than similar products currently marketed. Indaziflam is primarily a preemergence herbicide but has exhibited postemergence control of selected annual weeds, including annual bluegrass. Due to superior tolerance, only warm-season turfgrasses will be on the initial Specticle Herbicide label. Indaziflam effects on annual bluegrass vary with annual bluegrass growth stage and indaziflam rate. Indaziflam can have residual activity on some weeds up to one year after application if excessive rates are applied. At label use rates, activity normally lasts about six months. Postemergence activity on annual bluegrass is unique among traditional preemergence turfgrass herbicides. Data are needed to determine optimal application timing to maximize annual bluegrass control with indaziflam. Our objectives to were evaluate annual bluegrass control and turfgrass response from indaziflam when applied at monthly intervals during fall and winter. A randomized complete block experiment was conducted twice with three replications each on two sites at the Virginia Tech Golf Course at Blacksburg, VA in 2006 and 2007. The first site contained 'Riviera' bermudagrass and the second site contained 'Zenith' zoysiagrass. Turf was three years old and maintained at 1.5 cm at both sites. Annual bluegrass ranged from 1 to 5% cover on the bermudagrass site and 11 to 25% on the zoysiagrass site. The first 18 treatments consisted of indaziflam applied at 25, 50, and 75 g ai/ha in August, September, October, November, December, and February. The last 5 treatments consisted of prodiamine at 730 g ai/ha applied in August, simazine applied at 1120 g ai/ha applied in November or in February, glyphosate at 420 g ai/ha applied in February, and a nontreated check. Data were subjected to analysis of variance to determine significant main effects or interactions and regression analysis to explain trends over time. Indaziflam did not injure bermudagrass or zoysiagrass. Indaziflam rate and the interaction of rate and application time was not significant. The main effect of application time was significant at all evaluation times and the interaction of trial by application time was significant at a four of seven evaluations. When assessed in April of the following season (32 wk after treatment), annual bluegrass cover was 96% correlated to indaziflam application time, expressed as the number of months after normal annual bluegrass germination in August. Annual bluegrass cover increased 8% for each month indaziflam application was delayed from August. Regardless of rate, indaziflam applied in August or September reduced annual bluegrass cover equivalent to glyphosate applied in February and better than simazine applied in November or February and prodiamine applied in August. Indaziflam applied in October or later did not reduce annual bluegrass cover to acceptable levels." |
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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. L. Jester, L. Norton, and D. Spak. 2010. Application timing affects annual bluegrass control with indaziflam. South. Weed Sci. Soc. Proc. 63:p. 139. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2010 Proceedings-SWSS.pdf#page=189
Last checked: 08/01/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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