Tymchyshyn S. Optimization of stucture mixtures long-term grasses for pasturable use in conditions of western Forest-Steppe western

Object - process of transformation and conformity formation of farm and ecologically valuable specific sturcture of agrocenosises with perennial grasses, its productivity and fodder quality, manifestation of influence of different freguency use of grass stand on prolongation of period productive longevity of plant mass during season; aim lies in that reveal the best species of new created varietes perennial grasses and on its basis a selection of grass mixtures for creating of highlyproductive meadow grass stands of pasture typeuse on dark-grey podzolic gt surface- gley soils,methods-visual and measuring-weight, chemical mathematically - statistic, calculatically-comparatiove; novelty of obtained results: are disclosed the best species of grass and legume grasses, its varieties, grass mixtures for creating highly-productive various riped meadow grass stands of pasture use; results - at conditions of Forest-Steppe western, which make it possible to obtain 5,8-6,8 t/ha of fodder units on one-specific grass stands of perennial grasses, but on grass mixtures - 6,04-6,89 t/ha; are introduced - in agricultural forms of Lviv region on area 100 ha; branch-agriculture.