Beneficial Microorganisms Affect Soil Microbiological Activity and Corn Yield under Deficit Irrigation

Water scarcity is one of the main factors that decrease growth and productivity corn, since it negatively affects gas exchange general metabolism crop. The use beneficial microorganisms (BM) has been considered a potential attenuator water stress. This study aimed to evaluate effect BM deficit on growth, exchange, grain yield, soil microbial activity. A field experiment was carried out, in which treatments were composed 2 × 4 factorial scheme, corresponding two irrigation levels (100% ETc 50% ETc) four (T) referring inoculation with (C: control; T1: Bacillus amyloliquefaciens + Azospirillum brasiliense; T2: B. subtilis; T3: A. brasiliense). evaluations out flowering phase (plant foliar nitrogen content) at end plant cycle (grains mineral nitrogen, microbiological activity). reduction depth severely restricted corn decreased yield by 38%. increased protein content grains concentration when plants inoculated BM. Under stress, 35% BM, either combination (Bacillus brasiliense) or alone (B. subtilis), attenuated adverse effects maize.