Introduction of Flora, Diversity and Distribution of Weeds in the Micro Climatic Areas of Eshtehard County during 2013-2018

Field weed identification is considered as the most important step in weed management of crops. Based on the area under cultivation and the area of the farms in the city of Eshtehard, during 5 years , weeds were counted by weed number by species and species in each area at the sampling points. In each area of latitude and longitude, and altitude from the sea level, the place of measurement was recorded by the GPS device. The results showed that there are 47 weed species in Eshtehard. The most abundant species of weeds in this city, respectively, include: Syrian beancaper ,Mouse barley , Camel thorn ,Black bindweed ,Russian thistle ,Common lambsquarter ,Woodsorrel ,Bermudagrass ,Barley grass .In addition to the most important weeds, the uninvited guests of the city of Eschidar are Wimmer ryegrass (Lolium rigidum), Prickly lettuce ,Russian knapweed,Corn cockle (Vaccaria grandiflora), Common yarrow (Achillea wilhelmsii), Sophora (Sophora alopecuroides), Burdock (Xanthium strumarium) and other weeds with a lower frequency. The most noticeable point in this experiment was the increase in the prevalence of weed and goatmeat (11 and 9%) over the past five years, which gives rise to the concern that, due to the climatic conditions and soil and soil conditions,These weeds are prone becoming the dominant weed of the region.New species of Creeping thistle (Circium arvense), Swallow wort (Cynanchum acutum) and Prickly lettuce (Lactuca scariola), although found at low densities in the area, could be a serious threat to the city's farms, which could further expand to adjacent areas.