Grape IPM Factsheet

Relative Effectiveness of Fungicides for
Grape Disease Control in Michigan

Fungicide

Fungicide
Type*

Black
Rot

Downy
Mildew

Powdery
Mildew

Botrytis
Rot

Phomopsis

Abound** (azoxystrobin)

C / S

++

++

++

+

+++

Basic Copper Sulfate

P / I

+

+++

++

+

+

Bayleton (triadimefon)

C / DMI

+++

0

+++

0

+

Benlate (benomyl)

C / B

++

0

+++

++

+

Captan

P / H

++

+++

0

+

++

Carbamate (ferbam)

P / DC

+++

+

0

0

0

Cupric Hydroxide

P / I

+

++

+

+

+

JMS Stylet Oil*

P / I

0

0

++

+

0

Elite (tebuconazole)

C / DMI

+++

0

+++

0

++

mancozeb fungicides

P / EDBC

+++

+++

0

0

++

Nova (myclobutanol)

C / DMI

+++

0

+++

0

++

Procure (triflumizole)

C / DMI

?

0

+++

?

?

Ridomil Gold MZ
(metalaxyl + mancozeb)



C / ?



++



+++



0



0



++

Ridomil Gold Copper
(metalaxyl + copper)



C / ?



+



+++



++



+



+

Rubigan (fenarimol)

C / DMI

++

0

+++

0

0

Rovral (iprodione)

C / DC

+

0

0

++

?

Sulfur

P / I

0

0

++

0

0

Sovran (kresoxim methyl)

C / S

++

++

++

+

+++

Vanguard

C/A

    + ++ +
Ziram

P / DC

++

++

+

+

+++

0=not effective, +=slightly effective, ++=moderately effective, +++=highly effective, ?=effectiveness not known. Ratings are based on published information, modified based on Michigan observations.

*Type: C = curatives can be used after infection, P = protectants must be used before infection. To prevent or delay fungicide resistance avoid using the same family of fungicides for the whole season. Fungicide families: A = aniliopyrimidines, B = benzimidazoles, DC = dicarboximides, EDBC = diethylbiscarbamates, DMTC = dimethyldithiocarbamates, DMI = demetylation inhibitors (sterol inhibitors), H = heterocyclic, I = Inorganic, S = strobilurins.
See the article on Fungicide Resistance: What You Should Know in the Fruit CAT Alert.
Also check the most recent version of the E-154 Michigan Fruit Management Guide

**Preliminary ratings, experience JMS Stylet oil in Michigan is limited.

Comments on this table? e-mail me at: longstr7@msu.edu


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Last modified: September 21, 1999