Full TGIF Record # 269820
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Web URL(s):https://archive.lib.msu.edu/tic/its/articles/1974sup11a.pdf
    Last checked: 03/15/2016
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Publication Type:
i
Report
Content Type:Abstract or summary only
Author(s):Juska, F. V.; Murray, J. J.
Author Affiliation:U.S. Department of Agriculture
Title:Winter hardiness of Bermudagrass in the transition zone as affected by potassium and nitrogen levels
Section:Nutrition and fertilizers
Other records with the "Nutrition and fertilizers" Section
Meeting Info.:Blacksburg, Virginia: June 19-21, 1973
Source:Abstracts of Papers Presented at the Second International Turfgrass Research Conference. 1973, p. 11.
# of Pages:1
Publishing Information:Blacksburg, Virginia: [International Turfgrass Society]
Keywords:TIC Keywords: Cold resistance; Cultivar evaluation; Cynodon; Cynodon dactylon; Nitrogen; Nutritional requirements; Potassium; Transition zone; Winter injury
Cultivar Names:Arizona common; Tifgreen; Midiron; Tufcote
Abstract/Contents:"Winter-hardy bermudagrass cultivars are needed in the transition zone of the United States for closely mowed turf utilized for fairways, tees, and other turf areas. Proper nutrition may be a factor which will increase winter hardiness of bermudagrasses. Four bermudagrasses, Cynodon spp., were evaluated in a split-split plot design with two levels of K2O and three of N. The silt loam soil had a pH of 6.0, was high in P2O5, Mg, and very low in K. Hulled Arizona common was sown at 36 kg/ha (80 lb/A) and plugs of 'Tifgreen', 'Midiron' (P-16), and 'Tufcote' cultivars were spaced on 45 cm (18-inch) centers with 5.0 cm (2-inch) cores in June of 1970. After planting, a total of 2.7 kg (6 lb) of N/93m2 and 135 kg/ha (120 lb/A) of KCl 0-0-60 was applied (three times annually) in 1970, 1971, and 1972. Cu1tivars were mowed at 2.5 cm (1 inch) twice weekly and clippings removed. N treatments [1.4 kg (3 lb), 2.7 kg (6 lb), and 4 kg (9 lb) NH4NO3, and 4 kg (9 lb) of ureaform per 93m2 (1,000 sq ft)] were superimposed in 1971 and 1972 over K2O treatments and cultivars in 4 m (10 ft) strips. Plant counts were taken in May of 1971 within a 9.3 dm2 (1 sq ft) grid placed at random on the Arizona common plots. Stand counts on the K-treated plots averaged 53 per 9.3 dm2 and 16 for the control indicating much more winter injury on the plots that did not receive K. Winter kill for all cultivars was 26.5% for the control and 7% for the K2O treated plots. Main effects for K and N were highly significant and the interactions of cultivars X K and K X N were significant in the spring of 1972. Potassium decreased winter kill as follows: Arizona common 70.6 to 19.4%, Tifgreen 9.7 to 6.2%, Midiron 2.4 to 1.3%, and Tufcote 25.5 to 1.5%. Nitrogen treatments and the interaction of cultivars X N were highly significant. Leaf blotch caused some damage to plots of Tufcote and Arizona common. The infestation was more severe on the control than on the K-treated plots. Results indicate that proper K and N nutrition will increase winter hardiness in bermudagrasses for the transition zone."
Language:English
References:0
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Juska, F. V., and J. J. Murray. 1973. Winter hardiness of Bermudagrass in the transition zone as affected by potassium and nitrogen levels. Int. Turfgrass Soc. Annexe - Tech. Pap. p. 11.
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https://archive.lib.msu.edu/tic/its/articles/1974sup11a.pdf
    Last checked: 03/15/2016
    Requires: PDF Reader
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