Okselenko O. The improvement of technology elements of sugar corn growing in the north subzone conditions of Ukrainian steppe

Object of research is the formation of new sugar corn hybrids productivity depending on the density of plants standing and incrustation of seeds by microfertilizer and treater. Purpose - to compare the efficiency of new sugar corn hybrids and kinds of different groups of ripeness and optimum parametres of preharvest plants standing density and to establish the efficiency of seeds incrustation by microfertilizer and treater. Methods - field; laboratory-chemical; quantitative-weight; the mathematical statistics; calculated-comparative. Results: as a result of researches it is developed and offered to manufacture the improved elements of cultivation technology of sugar corncobs of technical ripeness in the northern subzone conditions of Ukrainian Steppe, that allows to receive the productivity of corncobs without wraps 6,13-9,11 t/hectares. Scientific workings were production tested in the farms of the Dnipropetrovsk region: AFE "Lany-2000" Vasilkovsky district, LLC "Agrofirm" Isida »and AFE "Shevela"of Pavlograd district on the total area of 8 hectares. Novelty - in the northern subzone conditions of Ukrainian Steppe it is proved for the first time the reasonability and possibility of early terms of sugar corn crops at the soil temperature on the seeds occurrence depth 8-10 ?C with the obligatory usage of seeds incrustation by treater and microfertilizer. It is established the optimum preharvest density of plants standing and the productivity of new sugar corn hybrids of different ripeness groups. It is established the economic efficiency of new sugar corn hybrids cultivation depending on the factors which were investigated. Sector - agriculture.