EN
In modern protection systems of cultivated plants the genetical resistance may play an important role as an environment - friendly method for discase control. To achieve this goal genetical resistance of plants should be diversified in time and space as far as modern cultivation systems allow. In the paper the following ways of more efficient use of genetical diversity for disease restriction are discussed: - the use of disease resistant cultivars, - mixed cropping (intra - and interspecies mixtures), - integrated control.