Full TGIF Record # 66808
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Publication Type:
Author(s):Colbaugh, P. F.; Metz, S. P.
Author Affiliation:Colbaugh: Associate Professor; Metz: Research Associate, Urban Plant Pathology, The Texas Agricultural Experiment Station, Dallas, TX
Title:Fungicide efficacy for controlling Sclerotinia dollar spot incidence on a modified-sand bentgrass green
Section:Pests and pest management: A. Diseases
Other records with the "Pests and pest management: A. Diseases" Section
Source:Texas Turfgrass Research - 1997. December 1997, p. [1-4].
# of Pages:4
Publishing Information:College Station, TX: Texas Agricultural Experiment Station
Series:Texas Turfgrass Consolidated Progress Reports TURF-97-1 thru
Keywords:TIC Keywords: Fungicides; Fungicide evaluation; Comparisons; Disease control; Sclerotinia homoeocarpa; Dollar spot; Golf courses; Golf greens; Disease severity; Tank mix; Application rates; Application frequency
Abstract/Contents:"Field inoculation studies were used to determine the effectiveness of 28 fungicide treatments for control of Sclerotinia dollar spot on bentgrass. The commercial fungicide standard Daconil 2787 at 6.0 oz/1000 ft², was applied weekly and provided consistent control of Sclerotinia dollar spot infection throughout the study. Applications of Eagle 40WSP (1.2 oz/1000 ft²) applied twice over a 6-wk period also consistently controlled S. homeocarpa. Weco 42894 (6.0 oz/1000 ft²) provided disease control immediately after each application, but provided little residual activity after 7 d. Heritage applied at 0.2 oz/1000 ft² at 14-d intervals provided little to no protection against dollar spot, while a tank mix of Heritage (0.3 oz/1000 ft²) plus Daconil Ultrex (2.7 oz/1000 ft²) at 14-d intervals gave moderate protection. Garlic Barrier and Garlic Barrier plus Crocker's Fish Oil, both experimental fungicides were found to be ineffective against dollar spot, with Crocker's Fish Oil causing turf damage. An experimental biological fungicide, Actinovate (Streptomyces sp.) applied at 15 g/1000 ft² provided slight dollar spot control on bentgrass on 3 of the 8 observation dates. Soligard (Gliocladium virens) provided slight disease reduction on 3 of the 8 observation dates in the field study, but with improved efficacy in an environmental chamber study. Biologicals were generally not effective in comparison to chemical treatments used in the study."
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Colbaugh, P. F., and S. P. Metz. 1997. Fungicide efficacy for controlling Sclerotinia dollar spot incidence on a modified-sand bentgrass green. Tex Turfgrass Res. p. [1-4].
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