Changes in the Composition of Natural Grassland (Chrysopogon gryllus type) in Grazing and Haymaking Mode of Use

The objective of the experiment was to observe the impact of the different management practices applied on natural meadow grassland (Chrysopogon gryllus L.) under mountain conditions and their impact on the qualitative composition of the formed biomass. The share of grasses in the composition of natural grassland decreased in grazing (up to 10.3%) and haymaking (up to 14.3%) mode of use from the first to the fifth experimental year. During the last two experimental years, there was a higher share (39.8-55.5% - in grazing and 38.6-52.0% - haymaking mode) of the representatives of genus Fabaceae, which is a prerequisite for higher quality and nutritional value of the formed mass for grazin g and hay. The amount of crude protein exceeded by 10.1% (in grazing mode) and by 10.8 to 25.4% (in haymaking mode) the average annual values of the indicator. The amount of crude protein in the dry matter of grassland with pasture management practice was 5.1% higher than that in grassland with haymaking mode. A high positive correlation was found between the percentage share of legumes in the grassland in the pasture mode of use with the concentration of crude protein (r = 0.82) and the gross energy value (r = 0.95) of the feed mass. In hay-making variants, the weight percentage of legumes correlated positively with the indicators characterizing the energy nutritional value (GE - r = 0.81; ЕE - r = 0.79; FUM - r = 0.77 and FUG - r = 0.69) of the formed aboveground mass.