Ogiyenko N. The influence of perennial grass mixture composition on the productivity of haylands and soil fertility in the left-bank Forest-Steppe of Ukraine

Object of research - process of formation specific and morphological structures, productivity of different types grass mixture composition, parameters of quality of a forage and fertility of ground depending on long use of herbages in a northeast part in the Left-bank Forest-Steppe of Ukraine. The purpose of work has consistent in definition of the most perspective for a zone of northeast Left-bank Forest-Steppe of Ukraine grass mixture composition at their long use on the grounds removed from intensive processing which would provide high constant efficiency and promoted increase of fertility of chernozem typical. The research methods are field, measuring and weight, analytic, computational and comparative, statistical. Novelty of the received results consists that for the first time for avtomorphing soils in conditions of northeast Forest-steppe of Ukraine transformation specific and ecologo-biomorphological structure of grass mixture composition and quality indicators of a forage, their productivity, carrying out by a crop of basic elements of a feed, agrochemical, physical and agrophysical parameters of fertility of ground is determined, accumulation of root weight by grasses and their certain power efficiency in view of influence on a fertile soil. The developed recommendations were introduced at the farms of area of Sumy region over a sown area 275 ha. The field of application - agricultural production