V. Sakhnenko, D. Sakhnenko. Formation and forecast of the dynamics of populations of eurygaster integriceps on winter wheat under new farming systems.

UDC 635 : 581.19 : 664.8 : 635.646

DOI: 10.31521/2313-092X/2018-3(99)-13

V. Sakhnenko
D. Sakhnenko

The article generalizes the features of the formation of agrocenoses with the introduction of new mathematical models in relation to the hydrothermal coefficient. It is important to simulate the quantitative indicators of reproduction of the main pests on grain crops and to analyze both the structure and mechanisms of the formation of modern entomocomplexes of field crops. These indicators are the basis for the development of the latest methodologies of long-term, annual and seasonal poggnoz for the systems of crops from the pest complex. In modern crop rotation of field crops, the yield of agricultural crops is determined by anthropogenic and natural factors, namely, soil tillage, fertilizer and plant protection systems, and weather and climate conditions.
The production of quality grain of winter wheat and other crops with an assessment of the mechanisms of insect self-regulation and an increase in the number of predatory ground beetles and other useful species is the basis for optimizing the use of special protective measures. Based on the introduction of biological measures to protect cultivated plants from a pest complex, in particular the production of trichogram and other biological preparations.
When developing measures to protect winter wheat, consideration should be given to the selection of resistant varieties to phytophages with the following applications of correct crop rotations of preservatives and trace elements, as well as prediction models for pest reproduction.
As a result, the intensity of distribution of individual insect species, reproduction and survival of individual stages of their development allows to determine the expected phase of the outbreak and the potential threat to crops of cereals in cells of different types. The development of such a forecast on the materials of land surveys and the compilation of resource-saving new protective measures is important, both in regional and prospective varieties of wheat.

Key words: winter wheat, eurygaster integriceps, agrobiocenoses, entomocomplex, farming systems, measures for the protection of cereals.

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