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| Web URL(s): | https://gsrpdf.lib.msu.edu/?file=/2000s/2004/040106.pdf
Last checked: 01/25/2017
Requires: PDF Reader |
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| Publication Type:
| Professional |
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| Author(s): | Koski, Tony;
Newberry, James |
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| Author Affiliation: | Koski: Professor and Extension Turf Specialist, Colorado State University, Fort Collins, Colorado; Newberry: Irrigation Assistant, Vista Ridge Golf Course, Lafayette, Colorado |
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| Title: | Conversion of ryegrass fairways to bluegrass: Impossible dream? |
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| Source: | USGA Green Section Record. Vol. 42, No. 1, January/February 2004, p. 6-7. |
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| Publishing Information: | Far Hills, NJ: United States Golf Association, Green Section |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Golf fairways; Conversion; Lolium perenne; Agrostis stolonifera; Poa pratensis; Overseeding; Seeding rate; Growth regulators; Competition; Allelopathy
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| Facility Names: | Fox Hollow at Lakewood, in Denver, Colorado; Rolling Hills Country Club, in Denver, Colorado |
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| Abstract/Contents: | States that "until recently, Kentucky bluegrass and creeping bentgrass (along with annual bluegrass) were the standard grasses for northern, cool-season zone golf course fairways. The use of perennial ryegrass for new fairways has become increasingly common in the last 10-15 years." Lists benefits of perennial ryegrass, cautioning that "the problem of gray leaf spot on perennial ryegrass has caused superintendents to reexamine its use in some areas of the country...[and, along with new developments in bluegrass cultivars,] has created interest in the use of bluegrass for high-maintenance fairways where ryegrass use has encountered problems." Reports that "observations of fairways where bluegrass overseeding had been attempted revealed little or no bluegrass - except in those areas where the ryegrass had been thinned or killed by disease or winter injury. A review of the research literature showed that no one had studied overseeding into ryegrass to any extent." Presents a study to "test the effectiveness of different seeding strategies for introducing Kentucky bluegrass into perennial ryegrass fairways." Results include that "despite cumulative seeding rates as high as 42 pounds of seed per 1,000 square feet over a 2½-year period, no Kentucky bluegrass could be found in the intact areas of any of the plots...Slit-seeding Kentucky bluegrass into healthy perennial turf, even with the use of a PGR to suppress ryegrass growth, was a totally ineffective method for introducing, much less converting, bluegrass into these fairways...We did see bluegrass seed germination in the fairways...Within a couple of weeks of seeding, bluegrass seeds were germinating in the seeder slits (approximately ¼-inch depth). And some seedlings, although spindly and weak, did emerge from the slits. But the seedlings did not mature into healthy adult plants." Suggests that "the poor/non-existent bluegrass establishment results from the fact that either perennial ryegrass is an extremely competitive plant that allows little opportunity for bluegrass...to become established, or perennial ryegrass is allelopathic, producing chemicals that suppress and kill bluegrass seedlings." Discusses "disagreement among scientists" about these two possible explanations. Concludes that "the results of this study...would suggest that the overseeding (via slit-seeding) of perennial ryegrass with any amount of bluegrass is a futile practice. The results of another C.S.U. study...would indicate that some level of success might be attained when overseeding is done in conjunction with core cultivation." |
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| Language: | English |
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| References: | 6 |
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| Note: | Reprint appears on Seed Research of Oregon website, January/February 2004, p. 1-2
Pictures, color |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Koski, T., and J. Newberry. 2004. Conversion of ryegrass fairways to bluegrass: Impossible dream?. USGA Green Sec. Rec. 42(1):p. 6-7. |
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| Web URL(s):
https://gsrpdf.lib.msu.edu/?file=/2000s/2004/040106.pdf
Last checked: 01/25/2017
Requires: PDF Reader |
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MSU catalog number: SB 433.15 .U84 |
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