Non-Chemical Management
- Plant resistant varieties such as 'Northern Spy', 'Red Delicious', and 'Stayman Winesap'. 'Liberty', 'Prima', and 'Redfree' are also resistant but are less commonly planted.
- Avoid use of very susceptible rootstocks including M9, M26, M27, Mark, and Ottawa 3.
- Prune out and destroy infected tissues as soon as they are noticed. Make cuts at least 6" below infected areas and sterilize pruning tools between cuts. Do not perform blight removal during regular pruning.
- Provide proper culture to minimize succulent shoot growth and reduce injuries, including winter injury.
- Avoid wounding plants.
Select non-chemical management options as your first choice!