Reaction of Wheat Yield to Soil Physical and Chemical Characteristics in Arak Fields

2 Abstract: In order to evaluate the impact of physical and chemical properties of soil on Bekras kind wheat yield in the city of Arak, a completely randomized block experimental plan has been implemented with three replications in the1390 crop year. Treatments include the overall condition and qualifications of wheat field 's soil in 18 wheat farms, which were randomly selected. Traits in this experiment was including the physical and chemical properties of soil associated with wheat yield. The results show that farms with balanced percent age of clay particles, silt and sand, rich inorganic material, having a neutral pH and low electrical conductivity of soil solution, The need for increased microbial activity and nutrient availability in soil solution and improve in nutrient up take by roots has provided and thus favorable conditions for plant growth will be prepared. According to the results of variance analysis and compared average characteristics, farm number 14 has entitled better conditions than the others. And Maximum yield is allocated to this farm by creating better soil condition, more fertility and better absorption of nutrients and low consumption of soil by plant.