PHYTOVIRUS MONITORING AT THE POTATO FIELDS IN CHERNIHIV REGION AGROCENOSES

The results of monitoring researches of potato virus diseases in the soil and climatic conditions of the Chernigov region. An analysis of the situation in the potato seed shows that the variety is largely defeat viral diseases. In potato seed plots found: potato M-, S-, Y-virus, in monoinfection, and as part of pathocomplexes. Prevails in crops entomophilous potato M virus as monoinfection (36 %) or in combination with other mosaic viruses. Potato virus Y is found in 18 from 47 potato cultivars. A study of the species composition of pathogens and their vectors, infection pathways in the field and deve lopment of viral disease, is the basis for the proper and effective application of safeguard measures.