Yields Structure of Different Grasslands for Grazing Production

V. LINGORSKI
Research Institute of Mountain Stockbreeding and Agriculture, BG-5600 Troyan, Bulgaria

Abstract

LINGORSKI, V., 2005. Yields structure of different grasslands for grazing production. Bulg. J. Agric. Sci., 11: 431-435

The dry matter content and dry matter allocation during the growing season of some foreign (from New Zealand) perennial grasses (cockfoot cv. Kara, cockfoot cv. Wana, phalaris cv. Maru, tall fescue cv. Roa) and grass-legume mixture, cultivated by soil-climatic conditions of Troyan foothill region (Central Northern Bulgaria) during the period 1993-1998, was studied.
Most dry matter content in forage had in the last (5^th) cut - from 26.25% to 30.44% and 26.87%, respectively, while at the beginning (1^st cut) and in the middle (2^nd and 3^rd) of growing season was a less.
Most dry mass was provided in 1^st and 2^nd cuts - from 20.9% to35.1% and 21.3%, and from 18.4% to 23.5% and 23.0%, respectively. During the 3^rd and 4^th cuts the yields decreased compared to 1^st and 2^nd cuts, and in the last(5^th) cut were almost equally compared to them - from 22.3% to 35.2% and 27.8% from annual production.

Key words: grass species, grass mixture, grazing phase, dry matter content, dry matter allocation