Efficacy of Fungicides for the Control of Grape Diseases
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Fungicide (tradename)
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Black Rot1
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Downy Mildew1
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Powdery Mildew1
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Anthracnose2
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azoxystrobin (Abound)
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++++
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++++
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++++3
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?
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boscalid (Endura)
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0
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0
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++++
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?
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boscalid + pyraclostrobin (Pristine)
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++++
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++++
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++++3
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?
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captan (Captan, Captec)
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+
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+++
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0
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+
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cyprodinil (Vangard)
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0
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0
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0
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?
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fenarimol (Rubigan)
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++
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0
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+++4
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?
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fenhexamid (Elevate)
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0
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0
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++
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?
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ferbam (Carbamate)
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+++
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++
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0
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?
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fixed Copper (several formulations) and lime
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+
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+++
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++
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+
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iprodione (Rovral)
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0
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0
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0
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?
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kresoxim-methyl (Sovran)
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++++
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++
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++++3
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?
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mancozeb (Dithane, Manex II, Manzate, Penncozeb)
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+++
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+++
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0
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+
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metalaxyl (Ridomil)
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MZ = +
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++++
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copper = +
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0
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myclobutanil (Nova)
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++++
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0
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+++4
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?
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phosphorous acid (various formulations)
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0
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+++
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0
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0
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potassium bicarbonate
(Armicarb 100, Kaligreen)
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0
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0
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++
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-
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pyrimethanil (Scala)
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0
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0
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0
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?
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quinoxyfen (Quintec)
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0
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0
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++++
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0
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stylet oil (JMS)
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0
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0
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+++
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0
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Wettable Sulfur
(several formulations)
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0
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0
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+++
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?
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tebuconazole (Elite)
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++++
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0
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+++4
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?
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trifloxystrobin (Flint)
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++++
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+
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++++3
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?
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triflumizole (Procure)
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++?
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0
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+++4
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?
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ziram
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+++
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++
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0
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++
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Lime sulfur
(dormant spray)
(Calcium Polysulfide)
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-
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-
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-
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+++
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Key: ++++ = excellent, +++ = good, ++ =
moderate, + = slight, 0 = not effective, ? = unknown
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1Source: 2005 New York
and Pennsylvania pest management guidelines for Grapes.
2Source: 2005 Missouri Grape Pest Control Guide
3Powdery mildew resistance to the strobilurin fungicides has been known to occur.
4Powdery mildew resistance to the Sterol Inhibitor (SI) class of fungicides has been known to occur.
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This publication may contain pesticide recommendations. Changes in pesticide regulations occur constantly and human errors are possible. Questions concerning the legality and/or registration status for pesticide use should be directed to the appropriate Extension Agent/Specialist or state regulatory agency. Read the label before applying any pesticide. The Texas A&M University System and its employees assume no responsibility for the effectiveness or results of any chemical pesticide usage. No endorsements of products are made or implied.
The Texas Winegrape Network was created and is maintained by Edward Hellman,
Department of Horticultural Sciences, Texas A&M University.
http://winegrapes.tamu.edu
© Copyright 2004 Texas A&M University
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