Koblay O. Soybean productivity formation depending on ways of preseeding preparation of seeds in the forest-steppe Left Bank of Ukraine

A research object is a study of the processes of growth, development and yield formation of soybean seeds, depending on the way of presiding seed preparation. The aim is to establish the level of productivity of soya, depending on the way of presiding seed preparation and to assess their economic and energy point of view. Methods – field; laboratory; visual; the statistics. Results: Improved technology of cultivation of early soybean varieties Amethyst and Romantica in the left-bank forest-steppe of Ukraine by developing new ways of presiding seed preparation, which provide a yield of 2,3-2,5 t/ha, with an energy efficiency 4,22-4,35, profitability – 40,2-43,5 %. The study tested in production environments and introduced in Poltava region on area of 30 ha. The economic effect was 216 UAH/ha. Recency – are particularly influence factors of presiding seed preparation processes of sprouting, photosynthetic and symbiotic devices, indicators of individual plant productivity and total yield. In the early periods of sowing shows positive effects of high pressure sodium lamps with additives of cesium. For the first time the possibility of genetic changes at the molecular level of soybean under seeds irradiation of a rotating electromagnetic field and high pressure sodium lamps with additives of cesium. Industry is agriculture.