Full TGIF Record # 147210
Item 1 of 1
Publication Type:
Content Type:Abstract or Summary only
Author(s):McDonald, S. J.; Dernoeden, P. H.
Author Affiliation:McDonald: Turfgrass Disease Solutions; Dernoeden: University of Maryland, College Park, Maryland
Title:Herbicide and plant growth regulator selection and use in fescue naturalized areas
Section:Abstracts and project summaries
Other records with the "Abstracts and project summaries" Section
Source:2008 Turfgrass Pathology and Weed Science ResearchSummaries [Maryland]. 2008, p. 71.
# of Pages:1
Publishing Information:College Park, MD: University of Maryland Department of Natural Resource Sciences and Landscape Architecture
Abstract/Contents:"Fine leaf fescues (Festuca spp.) are utilized by golf course superintendents as 'naturalized' areas. Many invasive weeds can become established in these areas and herbicides often are required to maintain quality stands. Information regarding the safety and selection of herbicides on immature and mature stands of fine leaf fescue is needed. Field studies were conducted in Maryland (MD) and Pennsylvania (PA) to evaluate various pre and postemergence herbicides commonly used to control grassy and broadleaf weeds in turfgrasses. The MD site was an immature stand of 'Chariot' hard fescue (F. brevipilia; formerly F. trachyphylla); and the PA site was a mature mixture of unknown cultivars of hard fescue (75%) and creeping red fescue (Festuca rubra; 25%). Single and sequential applications of 15 different herbicides and prepackaged mixtures were applied in four timings to meet standard use recommendations for the materials evaluated. The herbicides evaluated were: bispyribac-sodium; dithiopyr; fenoxapropethyl; fluazifop; isoxaben; mesotrione; pendimethalin; prodiamine; quinclorac; sethoxydim; sulfentrazone; triclopyr ester; clopyralid + triclopyr; prodiamine + sulfentrazone; and 2, 4-D + MCPP + dicamba + carfentrazone. All herbicides were applied in 50 GPA using a flat fan nozzle. Plots were 5 ft by 5 ft and arranged in a randomized complete block design with four replications. Plots were evaluated for foliar color and injury and fescue cover, and data were statistically analyzed. In MD, prodiamine (0.75 lb a.i./A) and dithiopyr (0.38 lb a.i./A) applied preemergence caused unacceptable levels of discoloration and loss of hard fescue cover. Quinclorac (0.50 lb a.i./A) and triclopyr ester (1.0 lb a.i./A) discolored hard fescue, but only triclopyr ester was considered to have provided an unacceptable level of discoloration. All other herbicides were shown to be safe to apply to hard fescue the summer following establishment. In PA, all herbicides evaluated were safe to apply to the mature mix of hard and creeping red fescue. Minor levels of discoloration were observed in plots treated with bispyribac-sodium (0.07 lb a.i./A) and triclopyr ester (1.0 lb a.i./A), however, the injury did not cause a long-term reduction in color or cover. Another problem with 'in-play' fine leaf fescue naturalized areas is summer-time playability. Mature stands often create a dense canopy that can make it difficult to find and advance the golf ball. A trial was conducted in PA to evaluate four plant growth regulator treatments (trinexapac-ethyl (TE); ethephon (E); TE + E; and mefluidide) and one herbicide (glyphosate) for their ability to suppress seed heads and foliar growth, and enhance playability of a mature stand of 'Aurora Gold' hard fescue. Among treatments, TE + E provided the greatest reduction in seed head numbers, and seed head and canopy height. A single April application of mefluidide appeared most promising for maintaining the desired height, playability, and cover for an 'in-play' naturalized hard fescue area on a golf course."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McDonald, S. J., and P. H. Dernoeden. 2008. Herbicide and plant growth regulator selection and use in fescue naturalized areas. Turfgrass Pathol. Weed Sci. Res. Sum. p. 71.
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