Full TGIF Record # 13862
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Web URL(s):http://www.newss.org/proceedings/proceedings_1988_vol42.pdf#page=148
    Last checked: 07/25/2013
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Publication Type:
i
Report
Content Type:Abstract or Summary only
Author(s):Bhowmik, Prasanta C.
Author Affiliation:University of Massachusetts
Title:Effects of Timing of Growth Retardant Application on Roadside Turf
Source:Proceedings of the 42nd Annual Meeting of the Northeastern Weed Science Society. Vol. 42, 1988, p. 148.
Publishing Information:Ithaca, N. Y. : Northeastern Weed Science Society
# of Pages:1
Keywords:TIC Keywords: Festuca arundinacea; Growth regulators
Abstract/Contents:"An experiment was conducted on a roadside turf in 1987. The objectives of the experiment were to : 1) compare the effects of four timings of growth retardant application on recovery of the treated turf, 2) evaluate the effectiveness of growth retardants in overall growth reduction of roadside turf. The roadside turf cosisted primarily of 'Kentucky 31' tall fescue (Festuca arundinacea Schreb.). Applications were made at dormant stage, 10, 75, and 100% green-up stages on March 20, March 27, April 10, and April 21 1987, respectively. Treatments were applied with a CO2 backpack sprayer in 567 L/ha at 152 kPa. Observations on turf injury, plant height, seedhead reduction, overall growth reduction, and recovery of the treated turf were made on May 12 and 26, June 15, and July 24, 1987. ACP-1911 at 420, 560, and 700 g ai/ha reduced (90% or more) growth of tall fescue when applied either at the 75% or 100% green-up stages. On the other hand, the same treatments were ineffective in reducing overall growth of tall fescue when applied at the dormant or 10% green-up stage. Turf injury ranged from 18 to 25% from the 100% green-up application, 37 to 58% from the 75% green-up, 20-23% from the dormant application, and 15 to 18% from the 10% green-up application. In general, ACP-1911 treatments resulted in less injury to tall fescue as compared to amidochlor at 2.8 kg/ha or the combination of metsulfuron and mefluidide at 15 and 70 g/ha when applied at all stages of green-up except the 100% green-up. ACP-1911 treatments reduced vertical height of tall fescue upto 50% when applied at the 100% green-up and the treatments were less effective when applied at the 75% green-up. Irrespective of the time of application (100 and 75% green-up stages), ACP-1911 at 420 to 700 g/ha reduced seedheads of tall fescue by 77 to 93%. However, ACP-1911 inhibited seedheads of tall fescue more when applied at the 100% green-up than when applied at the 75% green-up stage. Maximum injury was noted with the combination of metsulfuron and mefulidide at 15 + 70 g/ha with 50% from 100% green-up application and 78% injury from 75% green-up application. Treated tall fescue recovered only by 58 and 18% when applied at the 100 and 75 % green-up stages, respectively. In summary, dormant application and 10% green-up application of ACP-1911 were ineffective in reducing overall growth and seedheads of tall fescue. Treatments of ACP-1911 when applied at the 100% green-up stage significantly reduced overall growth and seedheads of tall fescue with little or no injury to the roadside turf. ACP-1911 demonstrated potential for use as a growth retardant for roadside turf."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bhowmik, P. C. 1988. Effects of Timing of Growth Retardant Application on Roadside Turf. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 42:p. 148.
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http://www.newss.org/proceedings/proceedings_1988_vol42.pdf#page=148
    Last checked: 07/25/2013
    Requires: PDF Reader
    Notes: Item is within a single large file
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