State of Natural Pasture Swards in the Strandzha Mountain in Different Locations. ІІ. Productivity

Abstract

The dominant half-upland relief in Strandzha region is determined the structure of land-use. The perspective objects of the communities are orientate to augmentation of the meadow and pasture areas, who to service for the stock-breeding development in the region. The positively influence on the neighboring middle is, that the pasture ensure no only a forage for animals, but help for the ecological balance between the plant species.
The purpose of this experiment is to determine the productivity of different type pasture swards in the region of Strandzha Mountain. During in three years (2008 – 2010) is retraced the influence of the climatographic factors and the methods of use on the productivity of most widely distributed and using pasture swards in the Strandzha Mountain.
Were determined five basic type pastures: 1) Hordeum crinitum – Trifolium nigrescens; 2) Cynusurus cristatus – Lolium perenne – Trifolium subteraneum; 3) Agrostis vulgaris – Cynusurus cristatus – Lolium perenne; 4) Cynodon dactilon – Lolium perenne; 5) Avena flavescens – Cynusurus cristatus – Lolium perenne. On the average for three years of use, the best productivity and highest density show the pasture of type Agrostis vulgaris – Cynusurus cristatus – Lolium perenne with indexes – 2330 kg/dа green mass, 543 kg/dа dry mass and 2525 n/m2 plants. The climatic factors, locality and the methods of use are determined the composition, density and productivity at the most used native swards for pasture.