Full TGIF Record # 63152
Item 1 of 1
Publication Type:
i
Report
Author(s):Gleason, M. L.; Christians, N. C.; Dickson, J. R.
Author Affiliation:Departments of Plant Pathology and Horticulture, Iowa State University, Ames, IA
Title:Evaluation of fungicides for control of dollar spot in creeping bentgrass, 1998
Source:Fungicide and Nematicide Tests. Vol. 54, 1999, p. 493.
Publishing Information:St. Paul, MN: American Phytopathological Society
# of Pages:1
Keywords:TIC Keywords: Agrostis stolonifera; Dollar spot; Sclerotinia homoeocarpa; Disease control; Fungicide evaluation; Disease severity; Application rates; Application frequency; Tank mix
Cultivar Names:Penncross
Abstract/Contents:"Trials were conducted at the Iowa State University Horticulture Research Farm near Gilbert, Iowa. Soil type was a Nicollet (fine, loamy, mixed, mesic Aquic Hapludoll). Fungicides were applied to 'Penncross' creeping bentgrass maintained at 0.16-inch cutting height, using a modified bicycle sprayer at 30 psi and a dilution rate of 5 gal/1000 ft². The experimental design was a randomized complete block with four replications. All plots measured 4 ft x 5 ft. Five days after inoculation of the entire plot with rye grain infested with the dollar spot pathogen, fungicide applications began on 12 Jun. Subsequent applications were made on 19 and 26 June and on 3, 10, 17, and 24 Jul. Rainfall was ususually frequent in June, normal during July, and temperatures were normal throughout. Dollar spot symptoms were first observed on 26 Jun. Disease development on untreated check plots was light on 29 Jun and moderately severe on 10 and 16 Jul. Most, but not all, fungicide treatments exhibited significantly (LSD, P=0.05) less disease than the untreated check. Phytotoxicity (browning of the tips of grass blades) on plots treated with AMV 300 became progressively worse during July, and was more severe at the 2 oz than the 1 oz rate."
Language:English
References:0
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gleason, M. L., N. C. Christians, and J. R. Dickson. 1999. Evaluation of fungicides for control of dollar spot in creeping bentgrass, 1998. Fungicide Nematicide Tests. 54:p. 493.
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