A field experiment was conducted during the winter season of 2018 in the field of Grdarasha of the College of Agricultural engineering sciences _ Salahaddin University at latitude 36,9 o N and 44.7 O E, in order to Determine the effect some of forage crops on barley crop in mix cultures at mixed farming (20B80G, 40B60G, 60B40G, 80B20G, 20B80V, 40B60V, 60B40V, 80B20V, 20B80L, 40B60L, 60B40L, 80B20L, 100B). A factorial experiment with three replicate was conducted using the randomized complete block design. The results showed significant differences between treatments in most of the studied traits. The no. of spikes plant-1 increased in treatment 40B60V while the number of grains increased. Spike-1 in treatment 40B60G, the weight of one thousand seeds and biological yield exceeded the treatment 60B40L. It is also noted that mixed farming did not significantly affect grain yield and harvesting evidence.