Abstract
An analysis of the composition and structure of the vegetation cover, depending on the season of usage, shows that in the spring period of use, all groups of types contain wormwood more than others (42.3%; 48.1%; 63.1%). According to the content of teresken in the grass stand, depending on plant communities, noticeable differences were also found, and their content varied from 14.3 -28.7% and the content of Kochia changed from 8.1-9.9%. The proportion of short-vegetative ephemers and ephemeroids with a spring development cycle, depending on the type groups, ranged from 10.0 to 7.6%. In the summer period, the use of wormwood, teresken and Kochia content increased and amounted to 44.7%, 57.8%, 68.9%; 28.1%; 29.4%; 14.7%; and 10.0%; 10.7%; 8.9%, respectively. The content of mixed herbs and saltwort during this period of the study is markedly reduced and amounts to 8.2%; 4.1% 9.0%; 2.1%; 3.5%. The forage mass in the absinthial-ephemeral areas of the pastures consists mainly of wormwood, the remaining plants conclude no more than 15-20%.