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| Web URL(s): | http://turf.rutgers.edu/research/abstracts/symposium2006.pdf#page=39
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, John C.;
Murphy, James A.;
Clarke, Bruce B. |
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| Author Affiliation: | Department of Plant Biology and Pathology, Rutgers University |
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| Title: | Development of best management practices for controlling anthracnose and maintenance of ball roll distance |
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| Section: | Posters
Other records with the "Posters" Section
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| Meeting Info.: | Cook College, Rutgers, NJ: January 12-13, 2006 |
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| Source: | Proceedings of the Fifteenth Annual Rutgers Turfgrass Symposium. 2006, p. 38. |
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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: | 1 |
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| Keywords: | TIC Keywords: Best management practices; Disease control; Anthracnose; Ball roll measurement; Poa annua; Mowing height; Mowing frequency; Rolling; Golf green maintenance; Disease severity
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| Abstract/Contents: | "Annual bluegrass (Poa annua) putting green turf can be extensively damaged by anthracnose caused by the fungus Collectrichum cereale. The objective of this field study was to evaluate anthracnose severity and ball roll distance in response to selected putting green mowing and rolling practices during 2004 and 2005. 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) was the main plot, mowing frequency (7 times wk-1 or 14 times wk-1) was the subplot, and lightweight vibratory rolling (rolling ever other day vs. no rolling) was the sub-subplot. This area was maintained according to standard putting green management practices for the Northeast region. Nitrogen (ammonium nitrate) was applied at 4.9 kg N ha-1 every 7- or 14-d. The study was treated with trinexapac-ethyl (Primo MAXX 1MC) at 0.4 L ha-1 every 14-d to facilitate low mowing. Dollar spot and brown patch were controlled with vinclozolin (Curalann 50 EG; 3.1 kg ha-1) and flutolanil (ProStar 70W; 6.1. kg ha-1) applied as needed every 7- to 14-d (previous studies have determined that neither fungicide controlled anthracnose). The area was lightly sand topdressed and brushed with a Coco mat every 14 days. Hand watering was done as needed to prevent wilt stress. Symptoms from a naturally occurring outbreak of anthracnose were apparent by 29 July 2004 and 15 June 2005. Disease severity was greatest at the 2.8-mm mowing height, while plots mowed at 3.6-mm incurred the lowest levels of disease in both 2004 and 2005. Raising mowing height from 2.8-mm to 3.2-mm or 3.6-mm reduced anthracnose 7-38% or 22-74%, respectively, over the two year study. A significant interaction between mowing height and frequency on four rating dates in 2004 was noted, which generally indicates that no difference in anthracnose was observed when mowing at a 2.8- or 3.2-mm height on the 7 times wk-1 schedule, whereas turf maintained at 2.8-mm had more disease than the 3.2-mm height of the cut at the 14 times wk-1 mowing frequency. A mowing height by frequency interaction was not observed in 2005.. There was no effect of mowing frequency on anthracnose in 2004 except on one date when disease severity was lower under 3.2-mm mowing at 14 times wk-1, compared to 3.2-mm mowing at 7 times wk-1. Mowing frequency did not effect disease development in 2005. Lightweight rolling every other day consistently reduced anthracnose 9-24% compared to non-rolled plots in 2004. Rolling also reduced disease severity in 2005 under moderate disease pressure; however, rolling had no effect by August 2005 when disease pressure became overwhelming (i.e., 75-95 % turf area infected). Ball roll distance responded to all main effects similarly in both years with no significant interactions observed. All possible combinations of mowing frequency and rolling at the 2.8- and 3.2-mm mowing heights achieved the acceptable ball roll distances established for this study (i.e., 2.9 to 3.2 m). An acceptable ball roll distance at a 3.6-mm mowing height was only obtained under a mowing frequency of 14 times wk-1 and/or rolling every other day; however, the combination of double cutting and/or rolling with the 3.6-mm (highest) mowing height also dramatically reduced anthracnose severity." |
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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, and B. B. Clarke. 2006. Development of best management practices for controlling anthracnose and maintenance of ball roll distance. Proc. Annu. Rutgers Turfgrass Symp. p. 38. |
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| Web URL(s):
http://turf.rutgers.edu/research/abstracts/symposium2006.pdf#page=39
Last checked: 11/26/2007
Requires: PDF Reader |
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MSU catalog number: SB 433 .R88 |
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