Evaluation of Alfalfa Swards in the Conditions of Middle Balkan Mountains

One of the most effective measures used to enhance natural grasslands in mountain and semi-mountain conditions is the inclusion of species such as alfalfa which is characterized by increased productivity, stability and adaptability. Thus, a comparative study of 3 varieties (‘Pleven 6’, ‘Prista 2’, ‘Multifoliate’) and 2 local populations (LP1, LP2) of alfalfa was conducted in the semi-mountain conditions of the Middle Balkan Mountains. The complex evaluation, comprising productivity and parameters of stability and adaptability, determined the sward of local population LP1, followed by varieties ‘Prista 2’ and ‘Pleven 6’ as the most suitable for cultivation in the Middle Balkan Mountains. They can be used successfully to enhance the composition of natural grasslands. The swards of species, such as birdsfoot trefoil and red clover, which were traditionally grown and typical for the Middle Balkan Mountains, were characterized by lower productivity, stability and adaptability respectively.