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Table 54. Effectiveness of Fungicides on Grape Diseases

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Table 54. Effectiveness of fungicides on grape diseases.
Fungicide FRAC Group Active Ingredient Phomopsis Cane and Leaf Spot Black Rot Downy Mildew Powdery Mildew Botrytis Rot Bitter Rot Anthracnose
Abound/Azakaa 11 azoxystrobin ++ +++ +++ +++ + -- +++
Actinovate AG BM02 Streptomyces lydicus (strain WYEC 108) -- -- -- + + -- --
Aliette P07 aluminum tris 0 0 +++ 0 0 0 0
Aprovia 7 benzovindiflupyr -- ++ 0 +++ + -- ++
Armicarb NC potassium bicarbonate 0 0 0 ++ 0 0 --
Badge SC/Badge X2 BM02

copper oxychloride,

copper hydroxide

+ + +++ + 0 -- --
Bordeaux mixb M01,M02 copper sulfate, lime ++ ++ +++ +++ ++ -- --
Captan/Captec M04 captan +++ + +++ 0 + ++ ++
Champ Formula 2 M01 copper hydroxide + + +++ + 0 -- --
Copper & lime M01,M02 copper, lime + + +++ ++ 0 -- --
Cueva M01 copper octanoate + + ++ + 0 -- --
Double Nickel BM02 Bacillus amyloliquefaciens (strain D747) -- -- -- ++ ++ -- --
Elevate 17 fenhexamid 0 0 0 + +++ 0 --
Elited 3 tebuconazole 0 +++ 0 +++ 0 0 ++
Endura 7 boscalid 0 0 0 +++

++/+++

0 +++
Ferbam M03 ferric dimethyldithiocarbamate + +++ + 0 0 + --
Fixed Copperc M01 various coppers + + +++ ++

0

+ --
Flinta 11 trifloxystrobin

++

+++ + +++ ++/+++ 0 --
Fracture BM01 (BLAD) Lupine seed extract -- 0 0 +/++ ++/+++    
Gavel M03 mancozeb ++ ++ +++ + 0 -- +
Inspire Super 3,9 difenoconazole, cyprodinil 0/+ +++ 0 +++ +++ -- ++
JMS Stylet Oil NC mineral oil 0 0 0 +++ + 0 --
Kaligreen NC potassium bicarbonate 0 0 0 ++ 0 0 0
Kumulus DFh M02 sulfur + 0 0 +++ 0 -- --
Lifegard BM02 Bacillus mycoides (isolate J) ++ ++ +++ +++ 0 0 0
Luna Experience 3,7 tebuconazole + +++/+ 0 +++ +++/+ -- --
Manzate/Dithane/ Penncoebf M03 mancozeb +++ +++ +++ + 0 -- +
Meteor 2 iprodione 0 0 0 0 +++ -- --
Milstop NC potassium bicarbonate 0 0 -- ++ 0 0 0
Miller Lime Sulfur M02 calcium polysulfide + -- 0 0 0 0 +
Mettle 3 tetraconizole -- +++ 0 +++ 0 0 +++
Nordox M01 cuprous oxide + + +++ + 0 -- --
Nu-Cop 50 WP M01 copper hydroxide + + +++ + 0 -- --
Orius 3 tebuconazole 0 +++ 0 +++ 0 -- --
OSO 19 polyoxin-D zinc salt -- -- 0 ++ ++ -- --
Oxidate NC

hydrogen peroxide

-- -- -- + -- -- --
Ph-D 19 polyoxin-D zinc salt -- -- 0 ++ ++ -- --
pHorcepHite P07 monopotassium phosphate 0 0 ++ 0 0 0 0
Presidio 43 fluopicolide 0 0 +++ 0 0 0 0
Pristine 7,11 boscalid, pyraclostrobin ++ +++ +++ +++ ++/+++ -- +++
Procure/Viticured 3 triflumizole 0 ++ 0 +++ 0 0 --
ProPhyt/Phostrol P07 potassium phosphite 0 0 +++ 0 0 0 --
Quadris Topa 11,3 azoxystrobin, difenoconazole ++ +++ +++ +++ + -- +++
Quintec 13 quinoxyfen 0 0 0 +++ 0 0 0
Rallyd 3 myclobutanil 0 +++ 0 +++ 0 0 +++
Rampart P07 phosphorus acid 0 0 +++ 0 0 0 --
Ranman 21 cyazofamid 0 0 +++ 0 0 0 0
Reason 11 fenamidone 0 0 +++ 0 0 0 0
Regalia P05 Reynoutria
sachalinensis
extract
-- -- ++/+++ 0 -- -- --
Revus 40 mandipropamid 0 0 +++ 0 0 0 0
Revus Top 40,3 mandipropamid, difenoconazole 0/+? +++ +++ +++ 0 0 ++
Rhyme 3 flutriafol 0 +++ 0 +++ 0 -- --
Ridomilg 4 mefenoxam + + +++ + 0 ++ --
Ridomil Gold MZg 4,M03 mefenoxam, mancozeb ++ ++ +++ -- 0 -- --
Ridomil Gold Copperg 4,M03 mefenoxam, copper hydroxide -- -- +++ + -- -- --
Rovrale 2 iprodione 0 0 0 0 +++ 0 --
Scala 9 pyrimethanil 0 0 0 + +++ 0 --
Serenade BM02 Bacillus subtilus (strain QST 713) 0 0 0 0 + -- --
Sonata BM02 Bacillus pumilus (strain QST 713) -- -- + ++ + -- --
Sovrana 11 kresoxim-methyl ++ +++ ++ +++ ++ 0 +++
SuffOil-X NC mineral oil 0 0 0 -- -- 0 0
SulfOMEX M02 monopotassium phosphate, sulfur 0 0 0 -- 0 0 0
Sulforix M02 calcium polysulfide + -- 0 0 0 0 +
Sulfurh M02 sulfur + 0 0 +++ 0 0 --
Switch 9,12 cyprodinil,
fludioxonil
0 0 0 + +++ -- --
Thioluxh M02 sulfur + 0 0 +++ 0 -- --
Topguard 11,3 axoxystrobin, flutriafol + +++ ++ +++ + -- --
Topsin-Mi 1 thiophanate-methyl ++ + 0 +++ ++i ++ +++
Torino U06 cyflufenamid 0 0 0 +++ 0 -- --
Trilogy IRAC 18B neem oil -- -- -- ++ -- -- --
Vangard 9 cyprodinil 0 0 0 + +++ 0 --
Vintage 3 fenarimol 0 ++ 0 +++ 0 0 ++
Vivando 47/50 metrafenone 0 0 0 +++ 0 0 0
Zampro 45,40 ametoctradin, dimethomorph 0 0 +++ 0 0 -- --
Ziram M03 ziram +++ +++ ++ 0 0 0 ++

0=not effective; +=slight effectiveness; ++=moderate effectiveness; +++=very effective; --=insufficient data

=OMRI listed for organic production; go to http://www.omri.org/ for details.

Products with the same FRAC code have active ingredients with the same mode of action. Repeated use of products with the same mode of action should be avoided to reduce the risk of development of chemical resistance by the pest and reduced efficacy of the pesticde. Fungicides with two FRAC codes contain active ingredients with two different modes of action. For more information on FRAC codes and managing fungicide resistance, go to https://www.frac.info/.

* Restricted use material; pesticide applicators license required.
For all products listed, read labels thoroughly for restrictions and warnings of phytotoxicity from tank mixes or sensitivity of certain cultivars.

 

a Do not use FRAC group 11 (azoxystrobin (Abound/Azaka), kresoxim methyl (Sovran), or trifloxystrobin (Flint)) continuously. Rotate with other fungicide groups as per label. Azoxystrobin can cause serious injury to some apple cultivars. Avoid drift to apples and do not spray apples with equipment used for spraying Abound. Flint should not be used on Concord grapes. Sovran can injure some cherry cultivars.
b Bordeaux mix is a mixture of copper sulfate and hydrated lime; it may be purchased prepacked or mixed fresh by the applicator.
c There are many fixed copper compounds and formulations registered for use on grapes. The main drawback of copper fungicides is the potential for severe injury to grape foliage, depending on variety and weather conditions, and for reduced vine vigor and yields even in the absence of visible foiar injury. Cool wet weather generally makes copper toxicity worse. Phytotoxicity can be lessened by adding spray loime. One should be very careful mixing other pesticides with preparations containing lime: many of these combiniations are incompatible. Excessive use of copper within 30 days of harvest may interfere with wine making.
d Rally and Elite can control black rot after infection has occurred. For effective control, infection periods must be monitored and funcide applied within 3 days after the start of an infection period. Consult the NEWA grape disease models to monitor disease development.  Application of these materials and Procure to sporulating lesions of powdery mildew should be avoided to prevent development of resistant strains of the pathogen. Continuous heavy use of this group of fungicides may result in the development of resistant strains of fungi.
e Continuous heavy use of Rovral (iprodione) may result in the development of fungal strains that are resistant to it (especially Botrytis). Iprodione-resistant strains of Botrytis have been found in east coast vineyards. Do not routinely apply more than two iprodione sprays per season.
f Trade names for mancozeb include formulations of Manzate, Dithane, and Penncozeb.
g The Ridomil MZ formulation (Ridomil + mancozeb) will give moderate control of Phomopsis and black rot, due to the partial rate of mancozeb that is provided by applying the labeled rate of this product. The Ridomil Copper formulation will provide moderate suppression of powdery mildew, particularly on moderately resistant cultivars (e.g., Concord), due to the amount of copper provided by applying it labeled rate.
h Sulfur may cause damage to sensitive varieties, it should always be used under cool temperatures.
Topsin-M is a benzimidazole fungicide very similar to Benlate. It is recommended only for protecting pruning wounds from canker diseases.