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| Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO-105-11-S4.161#page=20
Last checked: 12/14/2015
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, C. J.;
Murphy, J. A.;
Clarke, B. B. |
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| Author Affiliation: | Rutgers University, New Brunswick, NJ |
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| Title: | Establishment of soil and tissue potassium sufficiency ranges for control of anthracnose disease on annual bluegrass turf |
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| Section: | 2015 APS Annual Meeting abstracts of special session presentations
Other records with the "2015 APS Annual Meeting abstracts of special session presentations" Section
2015 Northeastern Division meeting abstracts
Other records with the "2015 Northeastern Division meeting abstracts" Section
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| Meeting Info.: | Pasadena, California: August 1-5, 2015 |
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| Source: | Phytopathology. Vol. 105, No. 11S, November 2015, p. S4.180. |
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| Publishing Information: | Lancaster, Pennsylvania: The Society Intelligencer Printing Company for The American Phytopathological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Anthracnose; Colletotrichum graminicola; Disease control; Environmental stress; Nutrient management; Nutritional value; Poa annua; Potassium; Soil management; Stress tolerance
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| Abstract/Contents: | "Potassium is an important soil nutrient that strongly influences the tolerance of turfgrasses to environmental stresses. Anthracnose, caused by Colletotrichum cereale, is a destructive fungal disease of annual bluegrass (ABG; Poa annua) turf that is exacerbated by nutrient deficiencies such as N and K. A 3-yr field study was initiated in 2012 to evaluate the response of ABG turf to a range of soil test K (STK) levels and determine critical soil and tissue K for the suppression of anthracnose. Treatments were arranged as a 2 x 4 factorial with four replications. Potassium chloride and potassium sulfate were applied at rates of 0, 66, 131, and 262 kg K ha-1 yr-1. Potassium nitrate and potassium carbonate were also included at the 262 kg K ha-1 yr-1 rate. Anthracnose severity was positively correlated to both STK and tissue K content and provided clear critical values for disease suppression using the CateNelson model; 43, 49, and 45 mg kg-1 STK in 2012, 2013, and 2014, respectively, and 19.6 to 19.8 g kg-1 tissue K in 2012 and 2013, respectively. Nonlinear regression analysis of tissue K and STK values indicates that STK levels above 100 mg kg-1 did not increase tissue K content; therefore, there may be no benefit to increasing STK above this level. Few differences were seen between K sources in 2012 and 2013; however, in 2014 KCl (262 kg K ha-1 yr-1) produced the lowest suppression in disease severity of the four K sources." |
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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. 2015. Establishment of soil and tissue potassium sufficiency ranges for control of anthracnose disease on annual bluegrass turf. Phytopathology. 105(11S):p. S4.180. |
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| Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO-105-11-S4.161#page=20
Last checked: 12/14/2015
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2219736a |
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Digitally in TIC by file name: phytp2015novspecialpres |
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