Full TGIF Record # 42131
Item 1 of 1
Publication Type:
i
Report
Author(s):Watkins, J. E.; Wit, L. A.
Author Affiliation:Department of Plant Pathology, Department of Horticulture, University of Nebraska
Title:Fungicide control of dollar spot on bentgrass, 1996
Source:Fungicide and Nematicide Tests. Vol. 52, 1997, p. 381.
Publishing Information:St. Paul, MN: American Phytopathological Society
# of Pages:1
Abstract/Contents:"Plots were located on a Penncross creeping bentgrass turf at the John Seaton Anderson Turf and Ornamental Research Facility at the University of Nebraska Agricultural Research and Development Center, Ithaca, NE. The experimental area was inoculated in early Jun with Sclerotinia homoeocarpa cultured on sterilized tall fescue seed. The inoculum was applied with a 4-ft wide Gandy drop spreader calibrated to deliver 5 lb tall fescue inoculum per 1000 sq ft. Plots were mowed three times per week at a height of 0.38 in. and maintained at 80% Eto. No preemergent herbicides or fertilizers were applied in 1996. Fungicide treatments were applied using a CO² pressurized (25 psi) backpack sprayer with a flat fan nozzle to 25 sq ft plots. The sprayer was calibrated to deliver 5 gal spray solution per 1000 sq ft. Four replications per treatment were arranged in a randomized block design. Precipitation was below normal in Apr and normal to above normal May through Sep. Temperatures were below normal during May through Sep. Cool nights produced long dew periods. Dollar spot was severe during Jul and Aug. Daconil Ultrex 82.5 WDG was slightly more effective than Daconil Weather Stik or Daconil ZN. The addition of the spreader sticker IB 10813 to Daconil Ultrex 82.5 WDG did not improve efficacy over Daconil Ultrex 82.5 WDG alone. By Aug all formulations of Chipco 26019 were similar in dollar spot efficacy. Lynx 25DF, Lynx 250EW and Bayleton 25DF, applied on a 28 day schedule provided excellent control of dollar spot. None of the treatments were phytotoxic; however, when the plot area was overseeded in Sep, many of the treatments appeared to significantly reduce seedling establishment."
Language:English
References:0
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Watkins, J. E., and L. A. Wit. 1997. Fungicide control of dollar spot on bentgrass, 1996. Fungicide Nematicide Tests. 52:p. 381.
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