effect of mycorrhiza inoculation on seedlings establishment and morphological parameters of bromus kopetdaghensis l. under field conditions

improved pasture establishment in plants, especially in arid and semi-arid is very important application of biological fertilizers in pasture can be considered as a useful approach. that is one of the sources of the symbiotic fungus.. the purpose of the present study was to investigate the possibility of enhancing seedling establishment and growth rate of bromus kopetdaghensis under natural habitats by inoculation with mycorrhiza species, seeds of alfalfa were sown under greenhouse for 20 days and inculcated with two species of glomus intraradices and glomus mosseae. after one month growth, the inoculated seedlings were transplanted into the natural as sub plots as split plot based on rcbd (randomized complete block design) were evaluated with three replication. inoculation percent with g.mosseae was 62/7 % and with of g. intraradices 81/3%. symbiosis increased establishment of alfalfa at the early and late growth stages, with stronger effects g,intra than g.mosseae. furthermore leaf and root dry matter, total dry matter and the ratio of above ground to underground plant parts was increased in association with g. intraradices, where as such effects were not associated with g.mosseae. in conclusions, it glomus intraradices can be used as a biological fertilizer for establishment of alfalfa in semiarid rangeland of bahar kish rangeland, quchan.