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Obtaining high quality crop yields is one of the most important economic problems of Russia. The yield of agricultural crops depends on the quality of the sowing material and its preparation for sowing. Currently modern technologies of processing seed based are used on applying various types of physical factors. Positive experiences on the use of the magnetic field, infrared and laser radiations, the currents of ultra-high frequencies to increase germination and seed growth are known. Unlike traditional methods of presowing treatment of seeds with chemicals, electrical methods are environmentally clear and do not have negative side effects on plants. One of the most promising methodsfrom an environmental point of view is ozonation. Scientists have determined that the ozonized air contributes to the improvement of sowing qualities of seeds. However, optimization of ozone treatment with the aim of increasing energy of growth and germination as the main indicators of sowing qualities requires improvement. In Educational and scientific testing laboratory of the Stavropol State Agrarian University for several years the research to examine the impact of environmentally safe ways on increasing the sowing qualities of seeds of grain crops was conducted. In particular, there was a twofactor experiment conducted on the influence of ozone on the improvement of the sowing qualities of seeds of winter wheat. Seed treatment was carried out on an industrial ozonator "Ozone-60P". Determination of ozone concentration was performed using a gas analyzer "Cyclone-5.41". It is proved that pre-treatment with ozone leads to increased germinating energy and seed germination. The article presents the optimal parameters of seed treatment of winter wheat with ozone to promote their sowing qualities.

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