Alternaria Fruit Rot

Symptoms

Leaf spot symptoms appear from March to May. Leaf spots are 1-5 mm wide, grey with a red margin. Fruit rot symptoms appear during fruit ripening. Infected berries become soft and develop a greenish-black mould on the surface.

Disease cycle

This fungus over-winters on twigs of dead branches and debris on the ground. Spores are released during cool, wet weather and are carried by the wind.