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| Publication Type:
| Trade |
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| Author(s): | Stowell, Larry J.;
Yenny, Roger;
Harivandi, Ali |
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| Author Affiliation: | Research DIrector, PACE Turfgrass Research Institute, Superintendent, Mesa Verde Country Club, Environmental Horticulturist, University of California Cooperative Extension Service |
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| Title: | Poa annua invasion of bentgrass greens: The role of bentgrass quality |
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| Column Name: | Research
Other records with the "Research" Column
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| Section: | Features
Other records with the "Features" Section
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| Source: | California Fairways. Vol. 8, No. 1, January/February 1999, p. 16-18, 20. |
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| Publishing Information: | Arlington Heights,IL: Adams Business Media, Inc. |
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| # of Pages: | 4 |
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| Keywords: | TIC Keywords: Poa annua; Weed invasion; Agrostis stolonifera; Golf greens; Turfgrass quality; Site factors
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| Abstract/Contents: | Compares the performance of bentgrass greens under Poa annua invasion. The objectives of this study were to determine whether or not all bentgrass varieties performed the same in different locations and if prediction of the extent of Poa invasion was possible by looking at quality ratings of bentgrass. Bentgrass was observed and visually rated for quality and percent invasion in Urbana, IL, Blacksburg, VA, Sunnyvale, CA and Costa Mesa, CA for 1, 2, 3, and 4, years respectively. Turf quality was assessed visually on a 1 to 9 scale, with 9 being the best quality possible. Poa invasion was assessed visually on either a percent invasion scale or a 1 to 9 scale with 9 representing no Poa invasion. The speed of Poa invasion was found to be "directly related to the quality or performance of the bentgrass... generally, the best looking turf had the slowest Poa invasion rates while the worst looking turf had the fastest Poa invasion rates." After comparing turf quality ratings from each site against each other and against NTEP quality ratings, it was determined that bentgrass performs differently in every region of the United States due to very different environmental conditions. Quality ratings and Poa invasion ratings were graphed against each other and the data was determined to be correlated with a less than 1% probability that the correlation was due to chance. It was concluded "that the best performing bentgrass varieties will also be the most resistant to Poa invasion", that no matter what the bentgrass variety, "Poa invasion will be significantly slowed if turf quality is maintained at high levels", and that "different bentgrass varieties do not perform the same in all climates and environments; their performance is, in fact, directly related to climate and environment." It was also concluded that "no matter which bentgrass is chosen, the best to be hoped for is a decrease in the rate of Poa invasion." Future genetic engineering of bentgrass resistant to broad spectrum herbicides is expected. |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also related article "Poa annua invasion of bentgrass greens: The role of bentgrass quality" Super Journal: PACE Turfgrass Research Institute, [20XX], p. [1] R=170378 R=170378
See also related article "Poa annua invasion of bentgrass greens: The role of bentgrass quality" Super Journal: PACE Turfgrass Research Institute, 1998, p. 1-10 R=170380 R=170380 |
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| Note: | Figures
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Stowell, L. J., R. Yenny, and A. Harivandi. 1999. Poa annua invasion of bentgrass greens: The role of bentgrass quality. Calif. Fairways. 8(1):p. 16-18, 20. |
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