Defeat Fusarium fungi underground and aboveground system of wheat in the conditions of gray-forest and dark chestnut soils

The Investigations of the dynamics of facultative parasites in the period of plant development showed that the most frequent are weak (for wheat) of the pathogens F. solani, F. oxysporum; from strong - F. moniliforme, F, avenaceum. After overwintering plants, a decrease in the occurrence of weak pathogens, and increasing, stronger, more aggressive threat. This suggests that the overwintering is a very adverse period in the life of plants and is accompanied by negative changes in the colonizing microbiota. In the spring to beginning of earing observed the growth of strong and weak colonizing fungal pathogens, which often makes it necessary to conduct this phase of the development of protective fungicide treatments against fusariosis. In the conducted experiments, the yield increase of winter wheat on various predecessors of such treatments was often significant, at the level of 20-30% or more.