Yields Allocation of Grass Monocultures and Grass-Legume Mixture for Hay Production

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

Abstract

LINGORSKI, V., 2003. Yields allocation of grass monocultures and grass-legume mixture for hay production. Bulg. J. Agric. Sci., 9: 65–68

The dry matter content and dry matter allocation during the growing season of some foreign (from New Zealand) perennial grasses (cocksfoot cv. Kara, cocksfoot 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 (3rd) cut – from 30.44 % to 33.16 % and 31.51 %, respectively, while at the beginning (1st cut) and in the middle (2nd cut) of growing season was a less. Most dry mass (more of half of the annual production) was provided in 1st cut – from 55.5 % to 58.3 % for grass monocultures and to 56.8 % for grass-legume mixture. In 2nd cut the yields decreased considerably compared to 1st cut and provided from 26.4 % to 28.8 % and to 25.7 % from annual production, respectively. Least dry matter providing had 3rd cut, which depending on year climatic conditions reached from 15.0 % to 16.9 % for grass monocultures and to 17.5 % for grass-legume mixture.

Key words: grass species, combined sward, harvest-haymaking phase, dry matter content, dry matter allocation