Full TGIF Record # 42145
Item 1 of 1
Publication Type:
i
Report
Author(s):Rimelspach, J. W.; Boehm, M. J.; Danneberger, T. K.; Taylor, J. A.
Author Affiliation:Department of Plant Pathology, Horticulture and Crop Science, The Ohio State University
Title:Evaluation of fungicides for the control of red thread in perennial ryegrass, 1996
Source:Fungicide and Nematicide Tests. Vol. 52, 1997, p. 394.
Publishing Information:St. Paul, MN: American Phytopathological Society
# of Pages:1
Abstract/Contents:"The test was conducted at The Ohio State University Turfgrass Research Center, Columbus, on an established stand of perennial rygrass (cultivar unknown). Mowing height was 2.5 in., clippings returned, the area was not irrigated nor fertilized. The condition of the sward was fair, with poor color, no thatch and low density. The soil was clay, pH 7.3. Individual plots 6 ft x 10 ft were in a randomized complete block design with three replications. Water soluble fungicide treatments were applied with a hand-held CO²-powered boom sprayer, with 8004 T-jet nozzles at 40 psi, (water equivalent to 2.5 gal water/1000 ft²). Granular materials were applied by hand. All treatments were made on 18 May. The average high and low air temperatures (F) and rainfall (in) for each month were: May, 69.9, 50.5, 10.0; Jun, 82.2, 61.3,8.2, respectively. Spring environmental conditions were favorable for red thread development and the disease was active at the time treatments were initiated. Relatively uniform disease pressure occurred over the evaluation area and continued until late Jun. Initial reduction in red thread was most evident with Heritage. Other materials that showed an initial reduction included Lynx, Chipco 26019 WDG, Sentinel, and the chlorothalonil products. Primo, a plant growth regulator, initially had no effect on the disease activity. By the end of the study, considerable red thread and dollar spot was present in the Primo plots. The reduction in growth in the Primo plots most likely was the reason for higher disease ratings. Fertilizer alone was not adequate for disease management."
Language:English
References:0
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Rimelspach, J. W., M. J. Boehm, T. K. Danneberger, and J. A. Taylor. 1997. Evaluation of fungicides for the control of red thread in perennial ryegrass, 1996. Fungicide Nematicide Tests. 52:p. 394.
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