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| Web URL(s): | http://turf.rutgers.edu/research/abstracts/symposium2005.pdf#page=44
Last checked: 11/26/2007
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Inguagiato, J. C.;
Murphy, J. A.;
Lawson, T. J.;
Smith, D. S.;
Clarke, B. B. |
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| Author Affiliation: | Department of Plant Biology and Pathology, Rutgers University |
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| Title: | Assessment of mowing and rolling practices on anthracnose severity and ball roll distance on an annual bluegrass putting green |
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| Section: | Poster presentations
Other records with the "Poster presentations" Section
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| Meeting Info.: | Cook College, Rutgers, NJ: January 13-14, 2005 |
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| Source: | Proceedings of the Fourteenth Annual Rutgers Turfgrass Symposium. 2005, p. 43-44. |
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| Publishing Information: | New Brunswick, NJ: Center for Turfgrass Science, Cook College, Rutgers, The State University of New Jersey |
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| # of Pages: | 2 |
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| Keywords: | TIC Keywords: Mowing; Rolling; Colletotrichum graminicola; Anthracnose; Disease severity; Disease resistance; Disease control; Ball roll measurement; Poa annua; Golf greens; Quality; Cultural methods
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| Abstract/Contents: | "Currently, recommendations made to superintendents struggling with anthracnose (Colletotrichum graminicola (Ces.) G.W. Wils. ) are derived from studies that have evaluated the effect of cultural practices on diseases other than anthracnose, or are based on general knowledge involving the influence of management practices of plant health. The objective of this study is to provide direct evidence about the effect of cultural practices on anthracnose severity, ball roll, and turf quality. Data generated over the next few years from this project will be used to provide superintendents with guidelines illustrating the relationship of management intensity (i.e. mowing heights, and freqency, rolling etc.), ball roll, and anthracnose severity. A comprehensive set of disease control recommendations will be developed for superintendents using results of this and other studies conducted at Rutgers University evaluating the impact of nitrogen, plant growth regulators, and verticutting on anthracnose basal rot. The current study was initiated in April 2004 on a one-year stand of annual bluegrass (Poa annua) maintained on a Nixon sandy-loam at the Horticulture Research Farm II in New Brunswick, NJ. Aerifier cores obtained from Plainfield Country Club, Plainfield, NJ, in addition to the indigenous weed seed, were used to establish the annual bluegrass field. The area was maintained during the 2004 growing season using standard golf course management practices for the Northeast region. Nitrogen was applied at 4.9 kg ha-1 (0.1 lb N/1000ft2) every 7-14 days and Primo MAXX 1MC (trinexapac-ethyl) was applied at 0.4 L ha-1 (0.125 fl oz./1000ft2) every 14 days from 26 May to 13 Oct. Dollar spot and brown patch were controlled as needed with Curalan 50 EG 3.1 kg ha-1 (1 oz./1000ft2) and ProStar 70WP 6.4 L ha-1 (2 oz./1000ft2) since it has been previously determined that neither fungicide controls anthracnose. Every 14 days, the area was topdressed with 280.81 g sand/m2 and brushed with Coco mat. Turf was hand watered as needed to prevent wilt stress. Treatments were arranged in a factorial combination using a split-split plot design with four replications. Mowing height (2.8, 3.2, and 3.6 mm; 0.110, 0.125, and 0.141 inch) was the main plot factor, mowing frequency (7 times/wk or 14 times/wk) was the split plot factor, and lightweight rolling (rolling vs no rolling) was the split-split factor. Symptoms from a naturally occuring outbreak of anthracnose were apparent in the study by 29 July. To insure uniformity, the area was artificially inoculated with C. graminicola at 7 x 103 conidia/mL on 3 Aug. Disease severity was greatest at the 2.8 mm mowing height, while plots mowed at 3.6 mm incurred the lowest levels of disease. The severity of anthracnose at the intermediate mowing height (3.2 mm) was not significantly different than when turf was maintained at either 2.8 or 3.6 mm. Double cutting (14 times/wk) reduced anthracnose by 7.7 to 16.9% on 2 of 3 rating dates, compared to single cut turf. Lightweight vibratory rolling reduced disease by 6.8 to 7.7% over all rating dates. There were no interactions involving rolling indicating that the influence of lightweight rolling on anthracnose was not dependent on mowing practices evaluated in this study. An interaction between mowing frequency and height was apparent by the end of the season, where double cutting at 2.8 mm enhanced anthracnose, but more research is necessary to confirm these results. Ball roll distance was affected by the main effects in the first year of this study. Mowing height and mowing frequency significantly impacted ball roll 76% of the time, with rolling influencing 48% of the observations. As expected, ball roll distances were increased when turf was mowed at 2.8, m compared to higher cutting heights. Likewise, greater ball roll was associated with more frequent mowing and lightweight vibratory rolling. A number of treatment combinations met or exceeded the minimum acceptable ball roll distance established for this study (i.e. 2.9 to 3.2 m; 9.5 to 10.5 feet) between 4 June and 20 July. All combinations of mowing frequency and rolling at the low and intermediate mowing heights (2.8 and 3.2 mm) achieved the minimum acceptable distance. Interestingly, either double cutting or rolling at the high height of cut (3.6 mm) also produced acceptable ball rolls." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Inguagiato, J. C., J. A. Murphy, T. J. Lawson, D. S. Smith, and B. B. Clarke. 2005. Assessment of mowing and rolling practices on anthracnose severity and ball roll distance on an annual bluegrass putting green. Proc. Annu. Rutgers Turfgrass Symp. p. 43-44. |
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| Web URL(s):
http://turf.rutgers.edu/research/abstracts/symposium2005.pdf#page=44
Last checked: 11/26/2007
Requires: PDF Reader |
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MSU catalog number: SB 433 .R88 |
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