Full TGIF Record # 268432
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DOI:10.1016/j.cropro.2015.10.008
Web URL(s):http://www.sciencedirect.com/science/article/pii/S0261219415301344
    Last checked: 02/03/2016
    Access conditions: Item is within a limited-access website
Publication Type:
i
Refereed
Author(s):Miller, G. L.
Author Affiliation:Division of Plant Sciences, University of Missouri, Columbia, MO
Title:Effect of watered-in demethylation-inhibitor fungicide and paclobutrazol applications on foliar disease severity and turfgrass quality of creeping bentgrass putting greens
Source:Crop Protection. Vol. 79, January 2016, p. 64-69.
Publishing Information:Amsterdam, The Netherlands: Elsevier Science
# of Pages:6
Keywords:TIC Keywords: Application timing; Comparisons; Control methods; DMI fungicides; Disease control; Disease severity; Foliar diseases; Fungicide combinations; Fungicide evaluation; Golf green maintenance; Metconazole; Paclobutrazol; Plant growth regulators; Tebuconazole; Triadimefon; Triticonazole; Turfgrass quality
Abstract/Contents:"Preventive, watered-in applications of DMI fungicides provide control of several soilborne turfgrass diseases on golf putting greens. The objectives of this two-year field study were to determine the impact of these applications on foliar diseases, and evaluate the impact of application timing of paclobutrazol, a plant growth regulator, on disease severity and turfgrass quality. Triadimefon (1.58 kg a.i. ha-1), tebuconazole (0.82 kg a.i. ha-1), metconazole (0.43 kg a.i. ha-1), and triticonazole (0.64 kg a.i. ha-1), were applied twice in late April and May and immediately watered in to the soil profile with 5 mm of post application irrigation. Paclobutrazol (0.28 kg a.i. ha-1) was applied alone, in a tank-mix with the fungicide application, 7 days or 14 days after the fungicide application. Overall dollar spot severity, assessed as area under the disease progress curve (AUDPC), was significantly lower in fungicide treated plots than non-treated plots in both trial years. The date of threshold symptom observation (ā‰„5 infection centers per plot), however, was not different between fungicide treated and non-treated plots in 2011. Triadimefon treated plots had lower AUDPC values than other fungicide treatments. Brown patch severity was not significantly different among treatments. Paclobutrazol applied alone did not reduce dollar spot or brown patch severity, however, paclobutrazol + fungicide treatments resulted in lower dollar spot severity than plots treated with fungicide alone. Short-lived phytotoxicity (bronze discoloration) was observed in plots treated with triadimefon or paclobutrazol + fungicide. Spring preventive fungicide applications targeted at soilborne disease control also provided residual control of dollar spot in this study."
Language:English
References:30
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Miller, G. L. 2016. Effect of watered-in demethylation-inhibitor fungicide and paclobutrazol applications on foliar disease severity and turfgrass quality of creeping bentgrass putting greens. Crop Prot. 79:p. 64-69.
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DOI: 10.1016/j.cropro.2015.10.008
Web URL(s):
http://www.sciencedirect.com/science/article/pii/S0261219415301344
    Last checked: 02/03/2016
    Access conditions: Item is within a limited-access website
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MSU catalog number: b2337143
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