The effect of diet on productivity of alfalfa in the conditions of Samara Trans-Volga region

The article presents the results of study of influence of mineral nitrogen fertilizer on yield and quality of green mass of alfalfa varieties of the Emerald. As a result of studying the efficiency of use of fertilizers "ammonium Sulfate" and "sulfur-containing nitrogen Fertilizer brand N:S (26:13)". The introduction of the studied agrochemicals fertilizer provided a yield increase of green mass relative to control version 12.5 and 14.7%, a favorable impact on the core elements of harvest structure and primelock increase in the yield of fodder units, digestible protein and metabolizable energy with denizy square.