Mouldy core - control in organic orchards

Orchard training and pruning should allow good airflow and light penentration and allow trees to dry rapidly and reduce the risk of mouldy core. At harvest apples that are riper than usual should not be picked as these have a high chance of having mouldy core. Serenade ASO (Bacillus subtilis) (EAMU 2360/2018) or potassium phosphite may give some control of the problem.