Pesticides for Powdery Mildew (Sweet Cherries)


Stage of Development: Blossom
Recommended Product Choices Grp1 Amount per REI2 PHI3 (days) Precautions and Notes
Ha Acre
mefentrifluconazole (Cevya) 3340530.25 - 0.375 L0.1 - 0.15 L12 hours0Do not make more than 2 sequential applications before alternating to a non-group 3 fungicide registered for the same use. Begin applications prior to disease development. Apply an additional applic. at an interval of 7 - 14 days if disease persists or weather conditions are favourable for disease development.
Notes: For blocks with high mildew pressure, begin mildew spray program no later than bloom to petal fall. See petal fall section for available sprays.

Stage of Development: Blossom

Powdery Mildew (Sweet Cherries)

1 Product Choices

1 Notes

Applications and Notes »  Pest Info »

1Group number for resistance management. NC = not classified.
2Re-entry interval on the label. An asterisk(*) indicates that no re-entry is shown on the label, but the WorkSafe BC re-entry interval may apply and is shown.
3Pre-harvest interval. Note: always read and follow the directions on the pesticide label.

 

Stage of Development: Petal Fall to Husk Fall
Recommended Product Choices Grp1 Amount per REI2 PHI3 (days) Precautions and Notes
Ha Acre
pyraclostrobin (Cabrio) 2732311670 g270 g12 h - 9 days10Use tank mixes with caution. Limit sprays of group 11 fungicides (Flint, Cabrio, Pristine) to 2/season.
penthiopyrad (Fontelis) 3033171.0-1.75 L405-709 mL12 h0Do not apply more than 2 times per season. Use high rate for high disease pressure.
boscalid + pyraclostrobin (Pristine WG) 279857 + 11750g - 1 kg304 g - 405 gdry - 10 days0Limit sprays of class 11 fungicides (Flint, Cabrio, Pristine) to 2 per season for resistance management. 10 days REI for thinning.
sulphur (Cosavet DF Edge 31869, Kumulus 18836)M27.0 kg2.8 kg24 h1
quinoxyfen (Quintec) 2975513500 mL200 mL12 h7Apply before visible symptoms, and at 10-14 day intervals. Do not make more than 2 consecutive applications. Quintec will no longer be registered for use by growers as of June 30, 2021.
mineral oil (Purespray Green) 27666NC10 L4 L12 h0For suppression of powdery mildew, apply in a minimum of 1000 L water/ha from two weeks after full bloom to pit hardening at 10-14 day intervals. Do not use in combination with or within 14 days of sulphur or captan.
metrafenone (Vivando) 29765U8750 mL - 1.12 L304 - 453 mL12 h7Apply prior to onset of disease, and at 14-21 day intervals. Do not make more than 2 consecutive applications.
myclobutanil (Nova 40WP) 223993340 g140 g12 h - 12 days1Caution - mildew resistance may be developing. Limit use of group 3 fungicides (Indar, Nova, Topas, Jade, Mission, Quash) to 2 sprays/season. 12 days REI for thinning.
trifloxystrobin (Flint) 3061911175 - 210 g71 - 85 g12 h – 4 days1Use higher rate for high disease pressure. Limit sprays of Group 11 fungicides (Flint, Cabrio, Pristine) to 2/season. 4 days REI for thinning.
metconazole (Quash 30402)3245 - 280 g99 - 113 g12 h - 9 days14Suppression of powdery mildew only. Maximum one application/season. REI of 9 days is for thinning.
fluopyram + trifloxystrobin (Luna Sensation) 321077+11300-400 mL121-162 mL12 h1 dayUse higher rate for high disease pressure. Rotate with fungicides from other groups. Limit use of group 11 fungicides to 2 applications per season.
mefentrifluconazole (Cevya) 3340530.25 - 0.375 L0.1 - 0.15 L12 hours0Do not make more than 2 sequential applications before alternating to a non-group 3 fungicide registered for the same use. Begin applications prior to disease development. Apply an additional applic. at an interval of 7 - 14 days if disease persists or weather conditions are favourable for disease development.
Notes: For blocks with high mildew pressure, begin spray program no later than bloom to petal fall. For low pressure blocks, begin at husk fall. Rotate fungicide groups for resistance management. Caution - mildew resistance to group 3 fungicides (Nova, Indar, Jade, Topas, Mission, Quash) may be developing. Limit use of group 3 fungicides to 2 sprays/season on cherry. Group 11 fungicides are also at high risk for resistance.

Stage of Development: Petal Fall to Husk Fall

Powdery Mildew (Sweet Cherries)

12 Product Choices

1 Notes

Applications and Notes »  Pest Info »

1Group number for resistance management. NC = not classified.
2Re-entry interval on the label. An asterisk(*) indicates that no re-entry is shown on the label, but the WorkSafe BC re-entry interval may apply and is shown.
3Pre-harvest interval. Note: always read and follow the directions on the pesticide label.

 

Stage of Development: Summer
Recommended Product Choices Grp1 Amount per REI2 PHI3 (days) Precautions and Notes
Ha Acre
mineral oil (Purespray Green) 27666NC10 L4 L12 h0For suppression of powdery mildew, apply in a minimum of 1000 L water/ha for two weeks after full bloom to pit hardening at 10-14 day intervals. Do not use in combination with or within 14 days of sulphur or captan.
penthiopyrad (Fontelis) 3033171.0-1.75 L405-709 mL12 h0Do not apply more than 2 times per season. Use high rate for high disease pressure.
boscalid + pyraclostrobin (Pristine WG) 279857 + 11750g - 1 kg300 g - 405 gdry - 10 days0Limit sprays of class 11 fungicides (Flint, Cabrio, Pristine) to 2 per season for resistance management.
trifloxystrobin (Flint) 3061911175-210 g71-85 g12 h - 4 days1Use the higher rate when disease pressure is severe. Limit sprays of class 11 fungicides to 2 per season. 4 days REI for thinning.
quinoxyfen (Quintec) 2975513500 mL200 mL12 h7Apply before visible symptoms, and at 10-14 day intervals. Do not make more than 2 consecutive applications. Quintec will no longer be registered for use by growers as of June 30, 2021.
sulphur (Cosavet DF Edge 31869, Kumulus 18836)M27.0 kg2.8 kg24 h1May cause injury during hot weather.
pyraclostrobin (Cabrio) 2732311670 g270 g12 h - 9 days10Use tank mixes with caution. Limit sprays of class 11 fungicides ( Flint, Cabrio, Pristine) to 2 per season.
metrafenone (Vivando) 29765U8750 mL - 1.12 L304 - 453 mL12 h7Apply prior to onset of disease and at 14 - 21 day intervals. Maximum of 2 sprays/season.
fluopyram + trifloxystrobin (Luna Sensation) 321077+11300-400 mL121-162 mL12 h1 dayUse higher rate for high disease pressure. Rotate with fungicides from other groups. Limit use of group 11 fungicides to 2 applications per season.
mefentrifluconazole (Cevya) 3340530.25 - 0.375 L0.1 - 0.15 L12 hours0Do not make more than 2 sequential applications before alternating to a non-group 3 fungicide registered for the same use. Begin applications prior to disease development. Apply an additional applic. at an interval of 7 - 14 days if disease persists or weather conditions are favourable for disease development.
Notes: Caution - mildew resistance to group 3 fungicides (Nova, Indar, Jade, Topas, Mission, Quash) may be developing. Limit use of group 3 fungicides to 2 sprays/season on cherry. Avoid using these products late in the season if powdery mildew is abundant. Group 11 fungicides are also at high risk for resistance.

Stage of Development: Summer

Powdery Mildew (Sweet Cherries)

10 Product Choices

1 Notes

Applications and Notes »  Pest Info »

1Group number for resistance management. NC = not classified.
2Re-entry interval on the label. An asterisk(*) indicates that no re-entry is shown on the label, but the WorkSafe BC re-entry interval may apply and is shown.
3Pre-harvest interval. Note: always read and follow the directions on the pesticide label.

 

Stage of Development: Post-Harvest
Recommended Product Choices Grp1 Amount per REI2 PHI3 (days) Precautions and Notes
Ha Acre
mineral oil (Purespray Green) 27666NC10 L4 L12 h0For suppression of powdery mildew, apply in a minimum of 1000 L water/ha.

Stage of Development: Post-Harvest

Powdery Mildew (Sweet Cherries)

1Group number for resistance management. NC = not classified.
2Re-entry interval on the label. An asterisk(*) indicates that no re-entry is shown on the label, but the WorkSafe BC re-entry interval may apply and is shown.
3Pre-harvest interval. Note: always read and follow the directions on the pesticide label.