Abstract
The supervision of plant hygiene of sweet chestnut grove on Pécsbánya (South Hungary) started more than four years ago. Hypovirulent strains were applied as a biological process to control Cryphonectria parasitica fungus which causes the chestnut blight disease. By now the performed interventions have shown obvious results, the vitality of the trees has greatly improved, the amount of harvested nuts is increasing, and the hypovirulent strain has been spreading within the area. During plant health inspection the galls of chestnut gall wasp (Dryocosmus kuriphilus) was found in the year of 2015, which is the obvious symptom of new occurrence of the pest. The pest was eradicated by destroy galls, which allows taking out of consideration the damage by now in this area.
Highlights
The sweet chestnut belongs to the family of Fagaceae, in the genus of Castanea, in which has several known species
European sweet chestnut is highly susceptible to the infection of chestnut blight fungus, Cryphonectria parasitica
In the fall of 2016, due to the Gesztenyeliget festival there was not available to make treatments on Pécsbánya lower area, and in the half of the year twice as much damage was occurred to be treated than as usual expected. It follows that the treatment of areas infected with chestnut blight fungus can be only effective if mechanical protection and cleaning interventions are performed regularly and professionally by making as few wound as possible
Summary
The sweet chestnut belongs to the family of Fagaceae, in the genus of Castanea, in which has several known species. As C. sativa likes the Mediterranean climate, its natural occurrence is geographically relatively narrow. It is endemic in the Carpathian Basin too (Csapody 1972). Its presence is located in the Zala and Somogy hilly counties, but it can be found in the Mecsek Mountains (Southern Hungary) and in the Danube bend area (Northern Hungary). These areas situated on the northern edge of the natural zone of European chestnut
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