THE DYNAMICS OF APPLE SCAB ATTACK – VENTURIA INAEQUALIS (CKE.) WINT. IN THE ORCHARDS OF APPLE FROM SIBIU COUNTY, IN THE PERIOD 2006-2008 PUBLISHEDAna Timar
The research presented in this paper includes the pathogenetical agents Venturia inaequalis (Cke.) Wint, which causesthe brown maculation of the apple’s leaves and the scab attack on the fruits and sprouts of the apple Malus pumila. One has observed the action of the fungus Venturia inaequalis (Cke.) Wint to certain environment factors (temperature, atmospheric humidity, rainfall and the phenological stages of culture. As a result of the infection, one may observe the moment of the attack. They were correlated to the apple’s phenological phases with meteorological data and the biology of the fungus (warning criteria) in order to issue warning bulletins. 'Bulletin warning' contains: the pest agent for which the warning is issued, the culture, the necessary conditions for the treatment, the recommended products for the plant protection, dose appliance (commercial substances/ ha), the optimum period of the treatment, special recommendation concerning the environmental protection, the observance of security standards and animal protection, warning the bee breeders concerning the phytosanitary treatments during the mentioned periods.
plant protection; atack; degree of attack