Gavrik S. Productivity cultivated cereal grass depending on the doses of fertilizers and usage modes on gray forest soils Forest.

Subject of research - forming of cultivated cereal grass depending on the doses and ratio of main nutrients of fertilizers and usage modes on gray forest soils of Forest-steppe. The purpose - the development measures of cultivated cereal grass fertilizing and using on grey forest soil of Forest-steppe for production of high-quality grass forage. Methods of research - field and laboratory with using visual, measuring, weighing and calculating, analytical and economic mathematical. Optimum doses and ratio of nitrogen, phosphorous and potassium in mineral fertilizers and rational usage modes of cultivated cereal grass are determined. Proposals for production as to fertilizing and using of cultivated cereal grass which are based on optimum environmentally benign and economically and energetically reasonable doses of main nutrients of fertilizers on gray forest soils of Forest-steppe and supply with harvesting 5,9-9,5 t of forage units from 1 h with cost price of 650-890 hrn/t are improved. Scientific researches are implanted on subsidiary plot of Kyiv Pechersk Monastery on the area of 260 hectares which ensured harvesting 4,9-5,2 t of forage units from 1 h and 3820-4100 hrn of clear profit. Field of using - agricultural production.