CONTRIBUTION TO THE ASSESSMENT OF MOUNTAIN GRASSLANDS PRODUCTIVITY FROM RÂMNICU SĂRAT RIVER BASIN

Abstract

The aim of this study is to assess the grasslands of the Râmnicu Sărat river basin, lying in Buzău and Vrancea counties, to the Curvature Carpathians, in terms of forage species, as well as to determine their productivity, pastoral value (PV), green fodder mass (GM) production and the optimal load of herbivores per hectare (Large Cattle Units). The permanent grasslands of Râmnicu Sărat river basin are spread up to 1340 m altitude above sea level, on flat lands and aspects, up to 30 degrees slopes, where, on average 85 species of plant species are found within a single plant community. The vegetation coverage is in average of 94%, of which 66% participation with fodder species and 28% with harmful species to grass carpet and animal production. The best pastoral value (PV) of 74.8 and a production of 16.62 t/ha of green fodder mass (GM) was evaluated within the ass. Cirsio cani-Festucetum pratensis and the lowest of 5.6 PV, with 0.56 t/ha GM within ass. Festuco capillatae-Nardetum. The average production of the assessed grasslands was of 7.22 t/ha GM, which allows a load of 0.73 LCU/ha, for an average period of 165 days of grazing, the lowest number being of 125 days in the mountain area and 195 days in the hilly area, for transhumant domestic animals.