Study the seasonal changes of production and consumption of range plants in SarAli Abad Gorgan rangelands

In order to study thechanges of seasonal production and consumption of range species during the growing period and grazing season, SarAliAbad rangelands were selected, representing a semi-steppe area. Production was measured inside an exclosure and consumption was estimated outside the exclosure under livestock grazing during 2007-2011. Collected data were analyzed by SAS software and mean comparisons were done by Duncan's multiple range test. Results indicated that there were significant differences between production and consumption at P Festuca ovina with an average production of 161 kg/ha and an average consumption of 172 kg/ha, and Agropyron intermedium with an average production of 57 kg/ha and an average consumption of 64 kg/ha, respectively.