The Efficiency of Growth Factor Bacteria ,Humic Acid ,and Alga Extract in Drought Stress of Sugar Beet

To study the impact of growth factor bacteria , humic acid  and alga extract in drought stress condition  a test is established in form of completely random blocks  and spilt plot  in 4 replications  in a field in Mahallat in Arak  province in 1389. Two primary plots including irrigation and stress  and secondary  plots including  growth factor bacteria ,humic acid  and  alga extract, Ascophylum 93. There were significant difference between irrigation , growth factor bacteria , humic acid  and alga extract. The growth factor bacteria  increased   plant vigour  against  drought stress.