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| Web URL(s): | http://turf.rutgers.edu/research/abstracts/symposium2008.pdf
Last checked: 11/05/2015
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Roberts, Joseph A.;
Inguagiato, John C.;
Clarke, Bruce B.;
Murphy, James A. |
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| Author Affiliation: | Department of Plant Biology and Pathology, Rutgers University, New Brunswick, New Jersey |
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| Title: | Irrigation management affects anthracnose disease of annual bluegrass putting green turf |
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| Section: | Poster presentations
Other records with the "Poster presentations" Section
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| Meeting Info.: | New Brunswick, NJ: January 10-11, 2008 |
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| Source: | Proceedings of the Seventeenth Annual Rutgers TurfgrassSymposium. 2008, p. 54. |
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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: Irrigation program; Anthracnose; Poa annua; Golf greens; Water availability; Disease severity; Colletotrichum graminicola; Evapotranspiration; Quality
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| Abstract/Contents: | "Irrigation management is essential for maintaining plant health and playability on golf course greens. Maintaining greens under the conditions of low water availability may increase firmness and ball roll distance (green speed), but will also require daily hand watering or syringing to prevent severe drought stress. Continued low water availability can weaken plants and potentially predispose turf to anthracnose (Colletotrichum cereale). Conversely, over-watering of greens can lead to increased algae and moss development while increasing the potential for mower scalp and lowering traffic tolerance. The objective of this study was to examine the effects of irrigation management on anthracnose severity of annual bluegrass (Poa annua) putting green turf. Treatments were designed to simulate four irrigation programs to produce soil water conditions ranging from excessively wet to excessively dry. Irrigation programs were simulated in this study by replacing a portion of potential evapotranspiration (excessive irrigation, 100% evapotranspiration [ET]; sufficient irrigation, 80% ET; deficit irrigation, 60% ER; insufficient irrigation, 40% ET) on a daily basis. Meteorological data acquired each day from an onsite weather station was used to calculate potential ET based on the Pennman-Monteith equation. Since rain could not be excluded from the field site, daily water replacement was adjusted as necessary based on the amount of rain as well as the water holding capacity of the Nixon sandy loam. The appropriate volume of water was applied to individual plots using a hand held hose equipped with a flowmeter and showerhead nozzle. Plots were monitored throughout the day for visual symptoms of wilt stress and received ā¤2.5 mm of water whenever wilt was observed. Subsequent hand waterings were performed as wilt stress re-occurred. Anthracnose severity was greatest on plots irrigated at 40% ET replacement and tended to decrease as irrigation amount increased in 2006 and 2007. Turf irrigated at 60% ET had less disease than 40% ET, but more than 80 and 100% ET on 28 July 2006 and throughout 2007; except on 9 June 2007 when turf maintained at 60% ET had similar disease severity as turf receiving 40% ET replacement. Differences in anthracnose development between 80 and 100% ET were observed on only 2 of 11 observation dates during two years of study. Anthracnose severity increased in plots irrigated at 100% ET on 25-August 2006 similar to turf receiving 40% ET irrigation; whereas, the moderate irrigation levels of 60 and 80% ET had the lowest disease severity. While this relationship was not apparent in 2007, plots maintained at 100% ET did have large amounts of algae in both years of the study which lowered turf quality equivalent to plots maintained at 40% ET. These results show that under-watering of annual bluegrass greens can lead to increased anthracnose and reduced turf quality. Irrigation management that supplies adequate but not excessive soil water for plant growth can lead to reduced anthracnose severity and improved turf quality without encouraging algal development." |
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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):
Roberts, J. A., J. C. Inguagiato, B. B. Clarke, and J. A. Murphy. 2008. Irrigation management affects anthracnose disease of annual bluegrass putting green turf. Proc. Annu. Rutgers Turfgrass Symp. p. 54. |
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| Web URL(s):
http://turf.rutgers.edu/research/abstracts/symposium2008.pdf
Last checked: 11/05/2015
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: SB 433 .R88 |
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