Apple Disease Control Toolbox - Fungicide and Antibiotic Efficacy

Fungicides should be selected based on apple diseases to be controlled and product efficacy for each. Growers can prevent resistance to fungicides by alternating chemicals by FRAC code group.
Apple Disease Control Toolbox - Fungicide and Antibiotic Efficacy - Articles
Apple Disease Control Toolbox - Fungicide and Antibiotic Efficacy

Apple Diseases and Recommended Fungicides

Recommendations are based on chemical registrations as of August 2015.

To avoid fungicide resistance, practice good cultural control methods, use fungicide mixtures, tank-mix with a broad-spectrum protectant, and alternate chemicals by FRAC code group.

Please refer to product labels and the Penn State Extension Tree Fruit Production Guidefor details on chemical use.

Alternaria leaf blotchApple scabBitter rotBlack rotBlossom end rot (Botrytis)Fire blightFlyspeckPowdery mildewRustsSooty blotchWhite rot
Bayletona66666661166
captana62213635521
ferbama33424635232
FireWallb66666166666
Flinta,b61226621316
Fontelisb61666661166
Indarb61666611116
Inspire Supera,b11666612116
Luna Sensationa,b61116611111
Luna Tranquilitya61666661666
mancozeb22222645242
Merivona,b11111611211
Pristinea,b11111611311
Procurea,b62666661166
Rallya,b62666661166
Regalia63336333333
Rubigana,b63666662266
Scalab61666666666
Serenade Optimum63366233333
Sovrana,b11226621312
Sulforix/lime sulfur63666662666
sulfura44344643444
Syllitb61666663266
Topguard61666661166
Topsin-Ma65532612613
Vangardb61666666666
Zirama33426636222

Degree of control: 1 = best, 2 = good, 3 = fair, 4 = slight, 5 = none, 6 = no registration. Uppercase names are trade names; lowercase names are common names for products with more than one trade name.

  1. Fruit finish on yellow varieties when used as recommended: very good for Bayleton, captan, Flint, Inspire Super, Luna Sensation, Merivon, Pristine, Procure, Rally, Rubigan, and Sovran; good for Thiram and Ziram; fair for Topsin-M; poor for ferbam and sulfur.
  2. Rankings assume no resistance in the pathogen population in an orchard.

Authors

Apple and pear diseases Peach, cherry, other stone fruit diseases Tree fruit disease management

More by Kari A. Peter, Ph.D.