Reaction of cultivars and populations of alfalfa on heat and drought in Volga Region

Resumo

The harvest of seed and green mass of alfalfa cultivars and population went down meaningfully during the last 2 years (2014, 2015). This period was characterized by higher values of average air temperature (by 1.0°С) and decreased relative air humidity (by 6.0%) and rainfall during the vegetation of alfalfa (by 107.0 mm). New varieties Sirena and Natali, as well as populations 2/08 and 6/04, were characterized by the highest yield of green mass and seeds in competitive variety trial.