Abstract
Plant growth promoting rhizobacteria enhance crop growth and yield by plant nutrient solubilization and mineralization, symbiotic and associative nitrogen fixation, hormone and water soluble vitamin productions. Ten strains of the genus Bacillus, characterized by their properties related to the promotion of plant growth, were evaluated to determine their effects on corm growth, development and yield under field condition. The experimental design was completely randomized plot with four repetitions. Corn seeds were treated with 10 different Bacillus strains before planting. Compared with the control, Bacillus subtilis and two unidentified Bacillus strains SZF04 and SZF07 highly increased plant height, stem diameter, ear length, seed number/ear, 1000 seed weight and seed yield/plant. Seed treatment with Bacillus strains could be an alternative option to increase corn yield without extra chemical fertilizers inputs.
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