Full TGIF Record # 95000
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Web URL(s):http://www.newss.org/proceedings/proceedings_2004_vol58.pdf#page=122
    Last checked: 07/23/2013
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Content Type:Abstract or Summary only
Author(s):Fidanza, M.; Loke, J.; Laurent, T.; Bagwell, A.; Agnew, M. L.; Fowler, J.; Kozsey, L.; DelSantro, M.
Author Affiliation:Fidanza: Penn State University, Reading, Pennsylvania; Loke: Bent Creek Golf Club, Lititz, Pennsylvania; Laurent: Saucon Valley Golf Club, Bethlehem, Pennsylvania; Bagwell: Wyncote Golf Club, Oxford, Pennsylvania; Agnew: Syngenta Professional Products, Kennett Square, Pennsylvania; Fowler: Syngenta Professional Products, Oxford, Pennsylvania; Kozsey: Syngenta Professional Products, Bethlehem, Pennsylvania; DelSantro: Syngenta Professional Products, Greenville, Pennsylvania
Title:Interaction of plant growth regulators and fungicides on creeping bentgrass
Section:Turfgrass and plant growth regulators section
Other records with the "Turfgrass and plant growth regulators section" Section
Meeting Info.:Marriott Cambridge Center, Cambridge, Massachusetts: January 5-8, 2004
Source:Proceedings: NortheasternWeed Science Society. Vol. 58, 2004, p. 122-123.
Publishing Information:Ithaca, NY: Northeastern Weed Science Society
# of Pages:2
Keywords:TIC Keywords: Agrostis stolonifera; Disease control; Evaluations; Fungicide efficacy; Fungicides; Growth regulator evaluation; Interactions; Plant growth regulators; Poa annua; Tank mix; Turfgrass quality
Abstract/Contents:"Fungicide rotation and tank-mix programs are commonly applied to golf course greens and fairways in the Mid-Atlantic region, especially from late spring through late summer. Plant growth regulators, however, are typically applied in the spring and fall, but recently their use on creeping bentgrass (Agrostis stoloniferous) has expanded throughout the summer months. The interaction of plant growth regulators applied with fungicides on creeping bentgrass, however, has not been clearly evaluated in a replicated field study. Therefore, the objectives of this field study were to evaluate creeping bentgrass quality, the effects on annual bluegrass (Poa annua), and summer disease control from repeated applications of a fungicide program applied as a tank-mix with plant growth regulators trinexapac-ethyl (Primo 1MEC) or paclobutrazol (Trimmit 2SC). Field studies were conducted on a creeping bentgrass fairway at three locations: (i) Bent Creek Golf Club, Lititz, PA, (ii) Saucon Valley Golf Club, Bethlehem, PA, and (iii) Wyncote Golf Club, Oxford, PA. The study sites were mowed regularly with a reel mower to a height of 7.0 mm (0.275 inch), 7.6 mm (0.300 inch), and 8.3 mm (0.325 inch); respectively. A typical fungicide tank-mix program contained a contact fungicide (i.e., chlorothalonil [Daconil Ultrex 82.5WDG]) plus a systemic fungicide (i.e., propiconazole [Banner MAXX 1.24MEC] or azoxystrobin [Heritage 50WG] or fludioxonil [Medallion 50WP]). At Bent Creek and Saucon Valley, the fungicide program was applied on a 14-day interval from June through August 2003 for a total of five applications. At Wyncote, the fungicide program was applied on a 21-day interval from June through August 2003 for a total of three applications. Treatments included the fungicide program alone, fungicides plus Primo, fungicides plus Trimmit, fungicides plus Primo plus Trimmit, and a nontreated check. Primo or Trimmit was not applied alone. At all three locations, plot size was 1.5 X 18 m (5 X 60 ft) and all treatments were arranged as a randomized complete block design with three replications. All treatments were applied with a CO2 pressurized (206 kPa [30 PSI]) back-pack sprayer calibrated to deliver 815 L water per ha (2.0 gal water per 1000 sq ft) from a single boom with three 8004E flat-fan nozzles spaced 48 mm (19 inch) apart. Creeping bentgrass and annual bluegrass quality/injury was evaluated on a visual 1 to 9 scale, where 9 = best color, density, and quality, and 6 = minimum acceptable quality. Since dollar spot (Sclerotinia homoeocarpa) was the only disease present, dollar spot severity was determined by counting number of active infection centers per plot. In general, creeping bentgrass quality was improved in those plots treated with fungicides plus Primo, fungicides plus Trimmit, or fungicides plus Primo plus Trimmit. Poor annual bluegrass quality and apparent injury was more pronounced in plots that received fungicides plus Trimmit. Dollar spot severity was significantly reduced in all fungicide-treated plots, and therefore fungicide efficacy was not influenced by the plant growth regulators."
Language:English
References:0
See Also:Other items relating to: P G Rs 1997-2006
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Fidanza, M., J. Loke, T. Laurent, A. Bagwell, A. L. Agnew, J. Fowler, et al. 2004. Interaction of plant growth regulators and fungicides on creeping bentgrass. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 58:p. 122-123.
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Web URL(s):
http://www.newss.org/proceedings/proceedings_2004_vol58.pdf#page=122
    Last checked: 07/23/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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