Agriculture: Cherry Pest Management Guidelines

Most Effective Treatment Timings for Key Diseases

Note: Not all indicated timings may be necessary for disease control.
Disease Late Budbreak/Pre-bloom Popcorn Full bloom Petal fall 2-3 weeks later Preharvest 1-10 days1
Botrytis ---- +++ +++ ++ ---- +++
Brown rot2 ---- +++ +++ ++ ---- +++
Jacket rot/Green fruit rot ---- ---- +++ ++ ---- ----
Powdery mildew ++3 ++ +++ +++ +++ +
Rating: +++ = most effective, ++ = moderately effective, + = least effective, and ---- = ineffective
1 Select broad-spectrum fungicides (or combinations) that have activity against both brown rot and Botrytis fruit rots.
2 Begin at popcorn and repeat every 10 to 14 days through bloom if rains continue.
3 Use sulfur at late bud break and other fungicides for later treatment. Treat immediately if mildew is found on shoots or leaves on inner scaffolds.

Acknowledgment: Adaskaveg et al., 2017. Efficacy and Timing of Fungicides, Bactericides, and Biologicals for Deciduous Tree Fruit, Nut, Strawberry, and Vine Crops (PDF).

Text Updated: 06/17