Prikhodko V. The optimization agrophysical and phytocenotic regimes with different methods basic soil tillage for corn in the northern Steppe of Ukraine

Object of research - the regulatory processes agrophysical regimes of black soil and weedinees of crops corn, the formation of the yield of grain on the basis application different methods of basis soil tillage and herbicides. The purpose - development of the methods of limiting the spread of weeds in agrocenoses corn with different ways of the basis soil tillage and herbicides adapted to the type of weedinees. Methods - the field (the determination of density, hardness, soil moisture, accounting weedinees of crops and crop yield), laboratory (content of nutrients in the soil and plants), a statistically-calculated (statistical processing of the results, calculation of economic efficiency), as well as the generally accepted (dialectics, hypotheses, synthesis, forecasting, modelling). The results - developed methods of minimization of soil tillage, rules of the application of soil and insurance of herbicides in crops of corn, providing increase of productivity of grain in comparison with the recommended by 0,58-0,73 t/ha. Designed agro techniques passed industrial approbation and implemented in the conditions of the Dnepropetrovsk region in area of 2,2 thousand hectares. Conditionally net profit is 3748 UAH/ha. Novelty - the first time for the conditions of the northern Steppe of Ukraine solved the problem of the limitation of distribution and control the harmfulness of the weed in crops of corn on the background of application of the new tools for tillage and direct seeding, the increase phytocoenotic competitiveness of culture with the effective selection of technological combinations of herbicides. Industry - agriculture.