The influence of nitrogen fertilisation on the yields and quality of multicomponent sown meadows

摘要

Field trials were carried out to study continuous green forage production from grass and legume-grass swards receiving three nitrogen fertilisation rates: NO, N60, and N120. A total of 12 mixed > multicomponent swards were developed at three sites onsod-calcareous, sod-podzolic, and sod-stagnogley soils. The swards were cut three times during the growing season. The legumes in mixtures - with grasses of various growth patterns provided continuous green forage production during the wholesummer season. The botanical composition and the fertilisation affected the average productivity of the swards (11.35-25.76 Mg ha~(-1) of dry matter) and the crude protein content. The positive effect of nitrogenfertiliser on sward productivity was better expressed in legume-grass mixtures on sod-stagnogley soils andin grass-only swards on sod-podzolic soils.