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| Web URL(s): | http://turf.rutgers.edu/research/abstracts/symposium2012.pdf#page=49
Last checked: 02/08/2012
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): | Schmid, Charles J.;
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: | Anthracnose severity of annual bluegrass turf as influenced by nitrogen fertilization programming |
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| Section: | Poster presentations
Other records with the "Poster presentations" Section
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| Meeting Info.: | New Brunswick, New Jersey: January 6, 2012 |
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| Source: | Proceedings of the Twenty-First Annual Rutgers Turfgrass Symposium. 2012, p. 48. |
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| Publishing Information: | New Brunswick, NJ: Center for Turfgrass Science, Rutgers, The State University of New Jersey |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Anthracnose; Application timing; Colletotrichum graminicola; Disease severity; Fertilizer evaluation; Nitrogen fertilization; Poa annua; Turf recovery
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| Abstract/Contents: | "Anthracnose, casued by Colletotrichum cereale Manns, is a destructive fungal disease of annual bluegrass [ABG; Poa annua L. f. reptans (Hausskn) T. Koyama] putting green turf. Proper nitrogen (N) management can reduce disease severity and enhance turf recovery. Previous work has shown that both granular- and liquid-N fertilization play an important role in anthracnose suppression; however, the potential interactive effect of both factors on disease severity has not been reported. The objectives of this study were: i) to evaluate the impact of late- or early-season granular-N fertilization rate on anthracnose severity, and ii) to determine whether late- or early-season granular-N fertilization alters the effect of frequent low rate soluble-N fertilization on anthracnose. The field study was initiated ini 2008 in North Brunswick, NJ on annual bluegrass turf maintained at 3.2 mm on a Nixon sandy loam. The experiment used a 2 x 3 x 4 factorial arranged as a randomized complete block design with three replications. The primary season of granular-N fertilization (2/3) of total N applied in the fall or spring), annual granular-N rate (73, 146 and 219 kg ha-1), and frequency of summer soluble-N (4.6 kg ha-1 of soluble-N applied every 0, 1, 2 or 4 weeks from mid-May through August 2009 and 2010) were the main factors. The main effects explained most of the bariation in anthracnose severity. Summer soluble-N applied every week (18.3 kg N ha-1 month-1) reduced disease severity 36 and 27% by the end of 2009 and 2010, respectively, compared to turf receiving no soluble-N. Granular-N fertilization applied primarily in the spring reduced disease severity compared to autumn based granular-N fertilization on all but two rating dates in the study. The rate of granular-N fertilization also affected disease severity; N applied at an annual rate of 219 kg N ha-1 decreased disease severity by 21 and 17% compared to 73 kg ha-1 by the end 2009 and 2010, respectively. The interaction between season and granular-N rate indicated that autumn based fertilization at 219 kg N ha-1 yr-1 was needeed to reduce anthracnose; wheras, the spring granular program reduced disease severity at the annual rate of 146 kg N ha-1. Turf managers should place an emphasis on applying N fertilization during the summer as well as spring as a component of best management practices to suppress anthracnose disease." |
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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):
Schmid, C. J., J. A. Murphy, and B. B. Clarke. 2012. Anthracnose severity of annual bluegrass turf as influenced by nitrogen fertilization programming. Proc. Rutgers Turfgrass Symp. p. 48. |
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| Web URL(s):
http://turf.rutgers.edu/research/abstracts/symposium2012.pdf#page=49
Last checked: 02/08/2012
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b3696858 |
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