Effects of salinity stress on yield and yield components of inoculated wheat by plant growth promoting bacteria (Azotobacter chroocccum, Azospirillum lipoferum, and Pseudomonase putida) and humic acid

Saline stress is major human problems that thousands of years since. So that saline stress can reduce ability crops produce on land count. Saline soils in arid and semi-arid regions of Iran and developed a level equivalent to 15 million hectares of country covers.The effects of salinity on yield and yield components in wheat inoculated with Plant growth promoting bacteria and humic acid, an experiment was conducted in 2010 at research greenhouse, Faculty of Agriculture and plant breeding, Islamic Azad University of Karaj Branch. A completely randomized design with three replications was using analysis of factorial. experimental treatments included two levels of humic acid: (A0): control, (A1): humic acid consumption, and salinity levels in the three levels of: (B0): control, (B1): low salinity of 75 mM, (B2): high salinity of 150 mM, the use of microorganisms in the five levels of: (C0): control, (C1): grain inoculation with Azospirillum lipoferum, (C2): grain inoculation with Azotobacter chroocccum, (C3): grain inoculation with Pseudomonase putida, (C4): the mix grain inoculation with (Azotobacter chroocccum, Azospirillum lipoferum, Pseudomonase putida).The results showed the effect of grain inoculation with plant growth promoting bacteria and humic acid consumption during exercise salinity on grain yield and spike yield was significant.The highest grain yield and spike yield of treatments inoculated with azetobacter chroocccum bacteria and humic acid no consumption and the salinity was 75 mM was.