Biological control product against apple scab is just a matter of time
Apple scab caused by the fungus Venturia inaequalis is economically the most destructive disease in apple production worldwide. Apple scab control requires multiple applications of fungicides during spring and summer. A potential biological control agent – H39, based on a particular strain of the fungus Cladosporium – has been tested in several European field trials during the last two years. H39 appeared to very successfully reduce apple scab in leaves and fruits. The same control levels could be reached as with common fungicide spray application schedules. A biological control company is currently evaluating the possible commercial use of the H39 antagonist. An important step which might lead to reduction of the dependency on chemical fungicides in the near future.