The level of soil fungistazis and bread grains contamination with root rot during crop rotation depending on soil cultivation and fertilizers are examined in the article. The dependence of soil fungistazis and bread grains contamination on soil cultivation is determined. It is shown that minimal soil cultivation with fertilizers dressing does not cause fungistazis deterioration, and phytosanitary conditions of the grain agrocoenosis in the north-east of the Russian Nonblack Soil Zone do not become worse. The green paste of plants, manure and straw of crops cultivated in mulch promote fungistazis activation, phytosanitary optimization of the arable soil and increase in crop capacity.