Full TGIF Record # 172497
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Title:Couch fungicide synergy theory debunked for dollar spot
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Source:Pace Highlights. March 2008, p. 1-2.
# of Pages:2
Publishing Information:San Diego, California: PACE Turfgrass Institute
Keywords:TIC Keywords: Assessment; Chlorothalonil + Propiconazole; Dollar spot; Fungicide combinations; Iprodione; Propiconazole; Synergism; Triadimefon; Vinclozolin
Abstract/Contents:Assesses the Couch fungicide synergy theory, originally postulated by Dr. Houston Couch, suggesting that fungicides may be used effectively at fractions of their label rates when applied in conjunction with other fungicides. Reports that, in 2008 reassessment studies, "Burpee and Latin did not observe consistent synergistic interactions when they tested the same rates and combinations as Couch did" in the control of dollar spot. Concludes that "we do not recommend using lower than the labeled rates of pesticides" to prevent potential development of dollar spot resistance to fungicides.
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Anonymous. 2008. Couch fungicide synergy theory debunked for dollar spot. Pace Highlights. p. 1-2.
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