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| DOI: | 10.2134/agronj2018.03.0147 |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/articles/110/6/2171
Last checked: 12/06/2018
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/aj/pdfs/110/6/2171
Last checked: 12/06/2018
Requires: PDF Reader
Access conditions: Item is within a limited-access website
Notes: Direct download |
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| Publication Type:
| Refereed |
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| Author(s): | Schmid, Charles J.;
Clarke, Bruce B.;
Murphy, James A. |
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| Author Affiliation: | Schmid: Peak Plant Genetics LLC, Albany, OR; Clarke and Murphy: Dep. of Plant Biology, Rutgers Univ., New Brunswick, NJ |
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| Title: | Potassium nutrition affects anthracnose on annual bluegrass |
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| Section: | European Turfgrass Society Conference
Other records with the "European Turfgrass Society Conference" Section
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| Source: | Agronomy Journal. Vol. 110, No. 6, November/December 2018, p. 2171-2179. |
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| Publishing Information: | Madison, Wisconsin: American Society of Agronomy |
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| # of Pages: | 9 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/aj/abstracts/110/6/2171
Last checked: 12/06/2018
Notes: Abstract only |
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| Keywords: | TIC Keywords: Anthracnose; Disease severity; Leaf tissue; Mat; Poa annua; Potassium chloride; Potassium fertilizers; Potassium sulfate
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| Abstract/Contents: | "Potassium fertilization can improve stress tolerances in turfgrass; however, its effect on turfgrass diseases is inconsistent and not well understood. A 3-yr field study was initiated to determine the effect of K fertilization rate and K source on anthracnose disease of annual bluegrass turf. Potassium chloride and K2SO4 were applied at K rates of 54, 109, and 218 kg ha-1 yr-1 as a 2 3 factorially arranged randomized complete block design with four replications. Potassium nitrate and K2CO3 were also included at the 218 kg K ha-1 yr-1 rate, as well as an untreated check. Nonlinear regression models were used to estimate critical concentrations of K in the mat layer and tissue with respect to anthracnose severity. All K treatments reduced disease severity compared to the untreated check (no K); however, KCl was less effective than the other sources when applied at the 218 kg K ha-1 yr-1 rate. The CateNelson regression model predicted that K values less than 43 mg kg-1 in the mat layer (Mehlich 3 extractant) and 20 g kg-1 in leaf tissue will increase anthracnose severity of annual bluegrass (ABG). This study provides evidence that K fertilization can reduce anthracnose severity and that the severity of this disease can be correlated with mat and tissue K concentrations. Thus, it is important to monitor K in ABG turf and to maintain sufficient levels to reduce disease severity and improve turfgrass quality." |
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| Language: | English |
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| References: | 55 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Schmid, C. J., B. B. Clarke, and J. A. Murphy. 2018. Potassium nutrition affects anthracnose on annual bluegrass. Agron. J. 110(6):p. 2171-2179. |
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| DOI: 10.2134/agronj2018.03.0147 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/articles/110/6/2171
Last checked: 12/06/2018
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/aj/pdfs/110/6/2171
Last checked: 12/06/2018
Requires: PDF Reader
Access conditions: Item is within a limited-access website
Notes: Direct download |
| 
MSU catalog number: b2212646a |
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