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| Web URL(s): | http://www.newss.org/proceedings/proceedings_2003_vol57.pdf#page=96
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): | Lycan, D. W.;
Hart, S. E.;
Fausey, J. |
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| Author Affiliation: | Lycan and Hart: Rutgers University, New Brunswick, New Jersey; and Fausey: Valent USA Corporation, Lansing, Michigan |
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| Title: | Potential use of V-10029 for weed control in cool-season turfgrass |
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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.: | Hyatt Regency Hotel, Baltimore, MD: January 6-9, 2003 |
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| Source: | Proceedings of the 57th Annual Meeting of the NortheasternWeed Science Society. Vol. 57, 2003, p. 96. |
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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: Cool season turfgrasses; Herbicide efficacy; Herbicide evaluation; Weed control
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| Trade Names: | V-10029 |
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| Abstract/Contents: | "Field experiments were conducted in 2002 in New Jersey to evaluate V-10029 for safety on various cool-season turfgrass species and control of annual bluegrass (Poa annua ssp. annua) and roughstalk bluegrass (P. trivialis). All herbicide treatments were applied to mature stands of turf using a CO2 backpack sprayer delivering 40 gal/A. Turf tolerance studies were established on June 11, 2002 on Kentucky bluegrass (Poa pratensis `Gnome'), perennial ryegrass (Lolium perenne `Jet'), tall fescue (Festuca arundinacea `Houndog 5'), and Chewings fine fescue (Festuca rubra ssp. falax `Shadow II'). Treatments consisted of single applications of V-10029 at 15, 30, 45, 60, and 120 g ai/A. Visual injury data and clipping weights were taken at 35 and 70 d after treatment (DAT). Clipping weights were converted to per cent growth reduction based on the untreated checks. At 35 DAT, injury was evident in Kentucky bluegrass plots treated with 30 g or greater. Visual injury ranged form 8 to 26%, while growth reduction values were 19 to 35%. By 70 DAT growth reduction was still evident in plots treated with higher rates. Perennial ryegrass and tall fescue injury at 35 DAT was minimal and by 70 DAT all plots recovered from initial injury and growth reduction. Fine fescue showed significant growth reduction from rates of 45 g and greater at 35 DAT. A treatment of 120 g resulted in 28% growth reduction at this time. Evaluations at 70 DAT were not taken due to poor fine fescue performance during severe environmental stresses. Two separate studies were established in the spring of 2002 to evaluate V-10029 for Poa annua and P. trivialis control in creeping bentgrass (Agrostis palustris `L-93'). Treatments consisted of V-10029 at 15 g ai/A applied once, twice (4 week interval, P. trivialis study only), and four times (2 week intervals); 30 g ai/A applied once and twice (4 week interval); and 60 g ai/A applied once. Per cent weed population reduction was calculated per plot from populations present at study initiation and those present at each evaluation date. By 16 d after final application, P. annua populations in untreated check plots decreased by an average of 23% due to seasonal fluctuations. Four applications of V-10029 at 15 g or one 60 g application resulted in 34 and 44% P. annua population reduction, respectively. Other V-10029 treatments resulted in P. annua population reduction values that were not statistically different than the untreated check. Poa trivialis population reduction increased with increasing rates of V-10029. Single applications at 15, 30, 45, and 60 g ai/A resulted in 17, 28, 44, and 50% population reduction, respectively, at 8 weeks after treatment. Poa trivialis populations in untreated check plots decreased by an average of 14% by this time. Multiple applications of V-10029 resulted in greater population reduction as compared to single applications. Four applications at 15 g resulted in 68% P. trivialis population reduction by 16 d after final application. In both studies, creeping bentgrass showed good tolerance to V-10029. Plots receiving two applications within two weeks displayed initial chlorosis levels of 10 to 20% but fully recovered within two weeks. These studies suggest that V-10029 has the ability to reduce Poa annua and P. trivialis populations in established turfgrass. Creeping bentgrass, perennial ryegrass, and tall fescue tolerance to V-10029 applications appears to be acceptable, while the tolerance of Kentucky bluegrass and fine fescue is more questionable." |
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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):
Lycan, D. W., S. E. Hart, and J. Fausey. 2003. Potential use of V-10029 for weed control in cool-season turfgrass. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 57:p. 96. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_2003_vol57.pdf#page=96
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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