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| Web URL(s): | https://turf.rutgers.edu/research/abstracts/symposium2013.pdf#page=50
Last checked: 03/03/2017
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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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 & Pathology, Rutgers University |
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| Title: | Anthracnose severity of annual bluegrass turf as affected by nitrogen source |
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| Section: | Poster presentations
Other records with the "Poster presentations" Section
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| Meeting Info.: | New Brunswick, NJ: January 11, 2013 |
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| Source: | Proceedings of the Twenty-Second Annual Rutgers Turfgrass Symposium. 2013, p. 49. |
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| Publishing Information: | New Brunswick, New Jersey: The 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: Ammonium nitrate; Ammonium sulfate; Anthracnose; Calcium nitrate; Colletotrichum graminicola; Disease severity; Poa annua; Potassium nitrate
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| Abstract/Contents: | "Anthracnose, caused by Colletotrichum cereale Manns, is a common fungal disease of annual bluegrass (ABG) [Poa annua L. f. reptans (Hausskn) T. Koyama] putting greens in the United States. Previous research at Rutgers University has shown that increasing ammonium nitrate rates up to 9.8 kg ha-1 wk-1 reduced anthracnose severity compared to lower nitrogen (N) rates. However, additional research is needed to determine the effect of N source on anthracnose severity. The objective of this field study was to evaluate the effect of soluble-N source on anthracnose severity and to determine if soluble-N source alters the effect of N frequency (rate) on this disease during mid-season. This three-year field trial was initiated spring 2010 in North Brunswick, NJ on an ABG turf maintained at 3.2 mm. The study was moved to a second location in spring 2011 because of significant winter injury and remained at this location for the subsequent two years. The experimental design was a randomized complete block design with 4 replications. Nitrogen treatments were applied at 4.9 kg N ha-1 every 7- or 14-d as solutions of ammonium sulfate ((NH4)2SO4), ammonium nitrate (NH4NO3), urea (CH4N20), calcium nitrate (Ca(NO3)2), or potassium nitrate (KNO3). Analysis of variance from three years indicated that soluble N source had a significant impact on disease severity. In general, potassium nitrate treatments had the lowest anthracnose severity; whereas, ammonium sulfate treatments had the greatest anthracnose severity. Application frequency also had a significant impact on disease severity throughout the study. Weekly applications of soluble N consistently reduced disease severity compared to biweekly applications. Biweekly applications of all soluble N sources tested in this study did not provide a sufficient amount of N required to reduce anthracnose severity. Interaction data from 2011 and 2012 suggest that weekly applications of potassium nitrate were required to significantly reduce 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):
Schmid, C. J., J. A. Murphy, and B. B. Clarke. 2013. Anthracnose severity of annual bluegrass turf as affected by nitrogen source. Proc. Rutgers Turfgrass Symp. p. 49. |
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| Web URL(s):
https://turf.rutgers.edu/research/abstracts/symposium2013.pdf#page=50
Last checked: 03/03/2017
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: b3696858 |
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