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| Web URL(s): | http://www.newss.org/proceedings/proceedings_1989_vol43.pdf#page=102
Last checked: 07/25/2013
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Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Dernoeden, Peter H. |
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| Author Affiliation: | Assoc. Prof. of Agronomy, Univ. of Maryland |
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| Title: | Fall and Spring Applications of Herbicides for Tall Fescue Control and Overseeding Effects. |
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| Source: | Proceedings of the 43rd Annual Meeting of the Northeastern Weed Science Society. Vol. 43, 1989, p. 102-103. |
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| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Festuca arundinacea; Poa pratensis; Chlorsulfuron; Metsulfuron; Diclofop; Control; Overseeding
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| Abstract/Contents: | "Chlorsulfuron, metsulfuron and diclofop were assessed for safetey and effectiveness in controlling tall fescue (Festuca arundinacea Schreb.) in Kentucky bluegrass (Poa pratensis L.) in two separate studies. In Study I (Table 1), herbicides were applied in the fall to a bluegrass blend of Merit + Midnight + Touchdown + Sydsport; whereas, in Study II the herbicides were applied in spring to Merion. Herbicides were applied in both studies at the rates shown in Table 1 in 50 gpa of water carrier. Tall fescue control was determined by counting the number of plants in each plot. Cover was visually determined on a 0 to 100% scale (0=brown or dead turf; 100 = entire plot area green), and overall quality was visually assessed on a 0 to 10 scale ( 0 = brown or dead turf; and 10 = optimum color and density). In Study I, herbicides were applied sequentially on 25 September and 30 October 1987. High rates of metsulfuron and diclofop reduced cover prior to the second application on 27 October. Except for chlorsulfuron, all other herbicide-treated plots had reduced cover on 22 December. While most treated plots exhibited improved cover during February and March, turf treated with diclofop (3.0 lb/A) did not recover until April and metsulfuron plots (0.125 + 0.125 lb/A) did not recover until October 1988. Between 1 June and 9 July 1988 no rain occurred and turf was severely drought stressed in Study I. After rain (0.7 on 10 July), plots rated on 12 July for cover showed that chlorsulfuron and metsulfuron treated turf had been more severely drought damaged than diclofop or untreated turf (Table 1). Following frequent rain, plots had recovered dramatically by 11 August, but chlorsulfuron and metsulfuron-treated turf did not completely recover until October 1988. Prior to the drought, chlorsulfuron plots exhibited better quality than other herbicide-treated turf. Metsulfuron and diclofop treated turf exhibited fair to poor quality until 21 April at which time only those plots treated with low rates of the aforemetioned herbicides possessed improved quality. Data collected 15 June showed that all chlorsulfuron and metsulfuron treatments had provided >93% control of tall fescue; whereas, diclofop had provided 34-50% control. In Study II (data not shown), spring (15 April + 12 May 1988) applications of the same herbicide rates generally provided poor to fair tall fescue control. The high rate of chlorsulfuron (0.125 + 0.125 lb/A), metsulfuron (0.125 + 0.125 lb/A) and the low rate of diclofop (2.0 + 2.0 lb/A) had provided 55%, 76% and 52% tall fescue control, respectively. Hence, fall applications of shlorsulfuron (0.06 + 0.06 lb/A) provided the best combination of turf safety and tall fescue control. Turf treated with either chlorsulfuron or metsulfuron in the fall of 1987, however, was more adversely affected by the June 1988 drought than diclofop or untreated turf. The Study II test area was disk-seeded (about 120 days after treatment) with a blend of Cimmeron + Bonanza + Apache tall fescue on 8 September 1988. Data collected 19 October 1988 showed that none of the herbicide treatments had reduced tall fescue (data not shown)." |
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| Language: | English |
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| References: | 0 |
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| Note: | Table |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Dernoeden, P. H. 1989. Fall and Spring Applications of Herbicides for Tall Fescue Control and Overseeding Effects.. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 43:p. 102-103. |
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| Web URL(s):
http://www.newss.org/proceedings/proceedings_1989_vol43.pdf#page=102
Last checked: 07/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: SB 610 .N62 |
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