Full TGIF Record # 225849
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Author(s):Gover, Arthur E.; Kuhns, Larry J.; Batey, David A.
Author Affiliation:Gover: Project Associate; Batey: Research Technologist, Agronomy; Kuhns: Professor, Ornamental Horticulture
Title:Evaluation of turf species and mixtures for roadsides under mowed and unmowed conditions, University Park, PA, 1991
Section:1991 results: Roadside vegetation management studies
Other records with the "1991 results: Roadside vegetation management studies" Section
Source:Turfgrass Research Results 1990/1991 [Penn State]. 1991, p. 124-127.
# of Pages:4
Publishing Information:[University Park, Pennsylvania]: [Pennsylvania State University, College of Agriculture, Agronomy Dept., Entomology Dept., Horticulture Dept., Plant Pathology Dept.]
Abstract/Contents:"An experiment evaluating eleven single species treatments, four mixtures, and an unseeded check was established in September, 1988, as part of a cooperative research project with the Pennsylvania Department of Transportation. Prior to seeding, the site was treated with 3 lb ae/acre glyphosate, the killed vegetation was mowed, and the seedbed was prepared with an Olathe model 83 turf overseeder. Treatments and seeding rates are listed in Table 1. The treatments were drop seeded onto 12 by 30 ft plots arranged in a randomized complete block design with three replications. The site was mowed once in 1989. In 1990, mowing was added as a treatment effect, and half of each plot was mowed three times with a flail mower set at 3.5 in. Due to the drought conditions during 1991, the plots were only mowed twice, on May 31 and November 8. A selective broadleaf weed treatment of 1 lb ae/acre 2,4-D plus 0.19 lb ae/acre clopyralid was applied September 24. Visual ratings of total ground cover, green turf cover, and weed turf cover were taken May 6 and June 30, (Tables 2 and 3) and turf cover and weed cover on November 7 (table 4). The total vegetative ground cover ratings demonstrate that well established turf provides excellent ground cover even under condition of extreme stress such as this season, when every month from April through October experienced below average rainfall. There was a significant interaction between treatment and mowing effects for turf cover and weed cover for all three rating dates, therefore results are reported for mowed and unmowed conditions. Plots seeded to tall fescue alone and in combination with perennial ryegrass performed well at all dates, except for June 30, when turf type tall fescue seeded alone provided significantly less cover than 'Kentucky-31' and turf type tall fescue mixed with perennial ryegrass. This seems unusual, as the tall fescue/perennial ryegrass plots were seeded with turf type tall fescue, and consisted almost entirely of tall fescue. The fine fescues provided a thick low growing ground cover, and the creeping red fescues and the 'D.O.T. Mix' showed little difference in appearance between mowed and unmowed plots. The hard fescues provided better green turf cover May 6 than the creeping red fescues and the 'D.O.T. Mix', but by November 7 all fine fescue plots were providing excellent cover. The Kentucky bluegrass blend provided excellent turf cover under mowed and unmowed conditions for all three rating dates. The perennial ryegrass blend is persisting better at this site than it has at similar studies in Salunga and Tyrone, PA, but when rated November 7, perennial ryegrass provided significantly less turf cover than the tall fescues, fine fescues and Kentucky bluegrass. The mowed perennial ryegrass plots provided significantly better cover on November 7, but the ratings on May 6 and June 30 for mowed and unmowed plots were very similar. Unmowed sweet vernal grass provided poor cover on November 7, and was rated significantly lower than mowed plots, while earlier ratings were similar for mowed and unmowed plots. 'Barclay' perennial ryegrass seemed to suffer severe winter-kill during 1989, and was rated less than 10 percent cover at all ratings."
Note:This item is an abstract and table only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gover, A. E., L. J. Kuhns, and D. A. Batey. 1991. Evaluation of turf species and mixtures for roadsides under mowed and unmowed conditions, University Park, PA, 1991. Turfgrass Research Results 1990/1991 [Penn State]. p. 124-127.
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