Productivity of perennial herbage with the participation of <i>Trifolium pratense</i> L. on sod-podzolic soils of the Republic of Karelia

In the conditions of northern arable farming, productivity and nutritional value dry mass pure stand Tr. pratense three-component agrophytocenoses with participation meadow clover, as well legume cereal representatives ( Galega orientalis Lam., Medicago varia Mart., Bromus inermis Leys., Phlum L.) were studied. Against background spring fertilizing N45P60K90 two-time mowing, yield biomass grass mixtures averaged 8.3-8.8 t/ha over four years compared to single-species sowing clover (7.8 t/ha). terms energy protein productivity, maximum indicators one hectare provided by (7.54 thousand feed units, 84.8 GJ exchange energy, 1.22 tons crude protein) clover-timothy addition galega or alfalfa (up 7.19 thousand, 87.7 GJ, 1.09 tons, respectively). The highest 16.71% 138 g digestible protein/feed units) was allocated a herbage.