The biological and environmental features of reproduction and distribution of dominant harmful organisms in modern conditions

The article presents research on the features of reproduction of dominant pests of species of organisms in agrobiocenoses growing cereals, leguminous crops, sunflowers and flowers. The article describes the latest ways to control a complex of soil harmful insect species in short-rotation field crop, as well as aerogenic harmful organisms in the integrated use of plant protection products of nutrition systems. In addition, we have identified individual levels of biologically oriented mechanisms of self-regulation of harmful organisms with measures to stabilize the functioning of agrocenoses, which are supplied with natural adaptive reactions in trophic chains. In the region of observations, the complex of pests is controlled by spiders, nematodes, mites, pathogens, predators and parasites. A variety of causative agents of bacterial, fungal, viral and protozoal diseases of phytophagous insects deserve special attention. Parasites and predators appear everywhere with trophic chains in 16 rows of the insect class. In recent years, predatory species of ground beetles from a number of Hymenoptera insects that feed on aphids on corn crops with unreasonable intensive use of nitrogen fertilizers have acquired significant importance. The use of compositions of insecticide + UAN, 32 % for seed treatment of grain crops, allows to save mineral nutrition and get an increase in grain yield up to 27 %. This helps to optimize the state of cenoses and obtain high-quality grain while reducing the cost. Measures have been developed to realize the productivity potential of field crops and flowers through low-cost plant protection measures and to determine the mechanisms for controlling the number of phytophages and the development of dominant types of diseases according to the characteristics of their biology and ecology