Notes on Saskatoon Berry Diseases
Entomosporium leaf and berry spot
This is the most serious disease of saskatoons. Small angular brown
spots first develop on lower leaves and eventually cause leaves
to yellow. Lesions may also develop on the petioles and cause leaf
drop. Infected fruit has small, grey lesions and becomes disfigured
Period of activity
The fungus overwinters on fallen leaves and twigs. New infections
are favoured by rain in the spring and early summer.
- Adjust plant density and pruning practices to provide adequate
airflow through the row.
- Control weeds in the row and use trickle irrigation rather than
- Several fungicides are labelled for control of this disease.
See Saskatoon Berry Calendar.