%0 Journal Article %A Hisham Nuri Akrim and Abubaker Edkymish and Nissreen Gryani %D 2012 %J International Journal of Agricultural and Biosystems Engineering %B World Academy of Science, Engineering and Technology %I Open Science Index 64, 2012 %T The Efficiency of Irrigation System and Nitrogen Fixation for inoculated Soybeans by using N15 Tracer Techniques %U https://publications.waset.org/pdf/6779 %V 64 %X Repeated additions of the unfertilized bacteria led to increase the activity of Nitrogen-fixing bacteria in the root zone with drip irrigation system compared to traditional manual vaccination to increase the proportion of Nitrogen from 29% to 64%, and the efficiency of adding Nitrogen fertilizer did not exceed 9.5% while dropped to 4%, due to the amount of fertilizer added was not exceed 20kg N/h, and the second was the existence of a large amount of available Nitrogen in the soil by fixation, while the efficiency of irrigation system between 2.08 to 2.26 kg/m3. %P 118 - 123