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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2005.pdf#page=107
Last checked: 07/22/2013
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): | Hixson, A. C.;
Warren, L. S.;
Yelverton, F. H. |
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| Author Affiliation: | North Carolina State University, Raleigh, NC |
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| Title: | Lateral movement of sulfonylureas in a turfgrass system |
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| Section: | Turfgrass and plant growth regulators
Other records with the "Turfgrass and plant growth regulators" Section
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| Meeting Info.: | Capital Hilton, Washington, D.C.: January 3-6, 2005 |
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| Source: | Proceedings: NortheasternWeed Science Society. Vol. 59, 2005, p. 93. |
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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: Sulfonylurea herbicides; Movements; Comparisons; Herbicide injury; Warm season turfgrasses; Cynodon dactylon; Application rates; Herbicide evaluation; Weed control
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| Abstract/Contents: | "Environmental fate and movement of pesticides used on golf courses, home lawns, and athletic fields is a critical issue facing the turfgrass industry. In the climatic transition zone where warm and cool-season grasses can be grown, herbicide decisions must be made carefully. Many herbicides, such as sulfonylureas are injurious to non-target cool-season grasses. Care must be taken when applying sulfonylurea herbicides to warm-season grasses neighboring cool-seaason grasses. Many sulfonylureas have proven to be effective on cool-season grass weeds, such as annual bluegrass (Poa annua), and many winter annual broadleaf weeds. Our objective was to determine the likelihood of sufonylurea lateral movement in surface water when applied to warm-season turfgrass. A field study was conducted on a sloped dormant bermudagrass (Cynodon dactylon (L.) Pers.) area adjacent to a golf course in Raleigh, NC. The experimental design was a randomized complete block with each treatment replicated four times. Herbicide treatments were trifloxusylfuron (Monument 75WG) at 17.35 g ai/ha and 29.45 g ai/ha, rimsulfuron (Tranxit GTA 25DF) at 35.06 g ai/ha, foramsulfuron (Revolver 0.19L) at 28.97 g ai/ha, metsulfuron (Manor 60WG) at 21.03 g ai/ha, pronamide (Kerb WSP 50WP) at 1.68 kg ai/ha, and an untreated check. Four 1.2 m wide strips of perennial ryegrass (Lolium perenne L.) were slit seeded on 26 Sept 2003, establishing alternating 1.2 m wide strips of perennial ryegrass and non-overseesed bermudagrass. Perennial ryegrass was chosen as an indicator species because it is known to be extremely susceptible to all herbicides used in this study. Treatments were applied on 16 December 2003 to dormant bermudagrass upslope from the actively growing perennial ryegrass. Two hr following application, 6.35 cm of water was applied to each plot to simulate a worst-case runoff scenario. One day after herbicide applicaiton (DAT), an additional 1.27 cm of water was applied to each plot. Weed species present included henbit (Lamium amplexicaule L.), Carolina geranium (Geranium carolinianum L.), white clover (Trifolium repens L.), and ivyleaf speedwell (Veronica hederifolia L.). Metsulfuron provided 99-100% control of all weed species present and lateral movement was not detected. Trifloxysulfuron provided 100% control of all weed species present and lateral movement was not detected. Trifloxysulfuron provided 100% control of all weed species present except for Carolina geranium, and at the higher application rate, moved 0.5 m into the perennial ryegrass causing 21% of the grass to be injured 65 DAT. Rimsulfuron and foramsulfuron provided excellent henbit control (^DT#+95%), but were not effective on any other weed species present. Very little lateral movement of rimsulfuron occurred, causing a maximum of 8% perennial ryegrass injury 65 DAT. Pronamide was 100% effective in controlling ivyleaf speedwell, and lacked activity on all other weeds present. Pronamide moved across the entire 1.2 m plot, causing 60, 77, and 78% injury to the perennial ryegrass at 65, 80, and 93 DAT, respectively. In summary pronamide is the most mobile of the herbicides evaluated, followed by trifloxysulfuron then rimsulfuron; foramsulfuron and mersulfuron did not cause noticeable injury to the perennial ryegrass buffer. Pronamide, trifloxysulfuron, and rimsulfuron are susceptible to lateral movement when intense rainfall events occur immediately following herbicide application. Results also indicate that perennial ryegrass injury symptoms may take up to 2 months (65 DAT) to become noticeable following winter applications." |
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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):
Hixson, A. C., L. S. Warren, and F. H. Yelverton. 2005. Lateral movement of sulfonylureas in a turfgrass system. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 59:p. 93. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2005.pdf#page=107
Last checked: 07/22/2013
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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