Dynamika przyrostu plonu suchej masy i azotu ogólnego u traw

The experiments was conducted in 2009–2010 in the mountain area. The rate of dry matter yield increase and total nitrogen was assessed in four grasses: Festuca pratensis, Dactylis glomerata, Phleum pratense, Lolium perenne. The evaluation of growth dynamics of dry matter and nitrogen accumulation in the year of sowing was made in four periods: I – 31 days after emergence of grasses, II – at harvest time, III – 21 days after first cut, IV – 51 days later. In the second year of the experiment growth was assessed four times, every 2 weeks from the beginning of vegetation. Results of investigations shows that pace growth of dry matter yield was lower than accumulation pace of total nitrogen.