Prorochenko S. Productivity of alfalfa-grass mixtures depending on the fertilization in the Steppe of the Right-bank

The object of research - the processes of formation of productivity of perennial hay agrophytocenoses depending on the composition of vegetation, stimulation of their growth and fertilization by slopes and years of use on chernozems typical low-humus in the Right Bank Forest-Steppe of Ukraine. The purpose of the dissertation is to establish patterns of formation of high productivity of sown perennial grasses with alfalfa sowing with the use of various cereals, fertilizers and growth stimulant Fumar in improving forage lands for haymaking on chernozems of typical low-humus forest-steppe right bank. Research methods - field, laboratory, visual, measuring and weighing, calculation, analytical, economic and mathematical. In the dissertation work the results of researches on studying of productivity of alfalfa-cereal grass mixes depending on fertilizer and application of a growth stimulator are stated. The effectiveness of the combined use of mineral fertilizers and biostimulator of Fumar growth in the creation of highly productive sown grasslands with alfalfa sowing for hay use has been established. The parameters of productivity and chemical composition of grass mass by phases of vegetation of the dominant component of different types of grass stands for the formation of the first mowing of grasses are determined. An economic and energy assessment of the creation and use of alfalfa, alfalfa-cereal and cereal hayfields with different fertilizers on chernozems typical low-humus in the Forest-Steppe right-bank. The developed recommendations for production were implemented in the SE "Agronomic Research Station" of the National University of Life and Environmental Sciences of Ukraine and LLC NPF "Harvest" on a total area of 105 hectares. The industry is agriculture.