Gorschar O. Causative organisms of spring barley grain mold and justification the receptions of restriction their development

Dissertation is dedicated to the study of species composition of causative organisms of spring barley seed mold, after harvesting, in the conditions of North Steppe of Ukraine. In dissertation stated results of researches concerning change of species composition of grain microflora during the period from harvesting until seeding, its pathogenic action depending on species composition of a pathogenic complex was established, phytotoxicity of a causative organisms of seed mold and seedlings of spring barley was defined. Optimum modes of seeds storage at which development of mold fungus depressed were established. Efficiency of application the receptions of pathogens development restriction was substantiated and proved high biological efficiency of a preparation Mikosan-N (5 liters per ton) against activators of a casual organisms of spring barley seed mold. Influence of infra-red radiation on viability of seed microflora was investigated. Economic efficiency of premature and pre-sowing application of biological preparations was appraised.