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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2011 Proceedings-SWSS.pdf#page=202
Last checked: 08/05/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Spak, David R.;
Myers, Don;
Baker, Britt |
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| Author Affiliation: | Bayer Environmental Sciences, Research Triangle Park, NC |
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| Title: | Assessing and mitigating the potential of off-target injury to cool season turfgrasses 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.: | San Juan, Puerto Rico: January 24-26, 2011 |
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| Source: | 2011 Proceedings, Southern Weed Science Society. Vol. 64, 2011, p. 94. |
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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: Agrostis stolonifera; Application rates; Cool season turfgrasses; Herbicide evaluation; Herbicide injury; Indaziflam; Lolium perenne
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| Abstract/Contents: | "Indaziflam is a new alkylazine herbicide recently registered in the U.S. for preemergence weed control in warmseason turfgrasses. Cool-season turfgrasses exhibit poor tolerance to indaziflam and as a result, are not labeled for this use. In certain regions of the U.S., cool-season turfgrasses, particularly creeping bentgrass (Agrostis palustris) and perennial ryegrass (Lolium perenne), re utilized for putting greens and/or overseeding of warmseason turfgrasses during the winter. The objective of this research was to determine if indaziflam can be used safely around cool-season turfgrasses areas. Studies were conducted to determine the potential of off-site indaziflam movement and cool-season turfgrasses injury. Greenhouse and field studies included: the effect of irrigation management on indaziflam movement from turf following heavy irrigation or rainfall, tracking potential of indaziflam onto creeping bentgrass putting greens, utilization of activated charcoal to deactivate indaziflam, and assess the sensitivity of bentgrass and ryegrass to indaziflam. The 20WP formulation of indaziflam was used in all studies. Watering-in had the greatest impact on reducing lateral movement of indaziflam. Results indicate that <1% of the applied indaziflam moved laterally from bermudagrass turf following a heavy simulated-rainfall event. There were no differences in lateral movement between dormant and green bermudagrass. Perennial ryegrass was very sensitive to indaziflam, and rates as low as 1 g ai/ha significantly reduced ryegrass emergence. Therefore, the estimated concentration of indaziflam from lateral movement may be enough to prevent ryegrass germination. Established perennial ryegrass and creeping bentgrass were more tolerant and tolerated rates up to 10-15 g ai/ha. Activated charcoal applied at 112 to 336 kg/ha increased ryegrass establishment when applied three weeks after the application of indaziflam. Higher rates of charcoal were needed to deactivate higher rates of indaziflam. On creeping bentgrass, charcoal applied 2 hours after indaziflam greatly reduced turf injury, but charcoal applied after phytotoxic symptoms developed (2 weeks) was less effective. Indaziflam applied at 53 g ai/ha to bermudagrass, either dormant or green, did not track onto putting greens from equipment tire traffic. In summary, indaziflam has a low risk potential to established cool-season turf when used on adjacent warm-season turf areas. Indaziflam movement does have the potential to impact ryegrass overseeding and precautions will need to be taken. Results of these and other studies will be discussed. Bayer CropScience LP. 2 T.W. Alexander Dr., RTP, NC 27709." |
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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):
Spak, D. R., D. Myers, and B. Baker. 2011. Assessing and mitigating the potential of off-target injury to cool season turfgrasses with indaziflam. South. Weed Sci. Soc. Proc. 64:p. 94. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2011 Proceedings-SWSS.pdf#page=202
Last checked: 08/05/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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