The disease can cause major fruit losses in a warm, wet season. All fruit showing even the smallest lesion must be graded out of a line, otherwise rotting may develop further in coolstore. Secondary infections can also develop. Protectant fungicide cover is necessary from mid to late November until harvest if Glomerella is likely to be a problem. Mancozeb, ziram and captan are the main fungicides currently used for Glomerella control.
Chlorine is added to the water dump or rinse at the packhouse to prevent the spread of spores.
Orchard hygiene is extremely important. Removing and destroying all mummified fruit at pruning will prevent the carryover of the spores. Cankers and dead wood should also be pruned out in the winter. Fresh infections should be removed and either burnt or buried to stop the spread of the disease. References Atkinson, J.D. 1971.