Organic production of Beta vulgaris subespecie cicla with microbial inoculants

Organic substrates are suitable for vegetable production; in addition, by associating them with microbial inoculants, they favor their use. The objective of this study was to evaluate the effect of beneficial microorganisms, together with organic substrates, on the nutrition of Swiss chard. Two Bacillus subtilis and one Trichoderma harzianum strains, and their combination with the organic substrate, were evaluated to promote the vegetable growth. Fresh and dry biomass production and the essential elements were evaluated. Fresh biomass did not show significant differences among treatments in the first cut. Strain C90_3T of B. subtilis had the highest production of fresh biomass in the second cut. The combination of both Bacillus strains led to the absorption of several essential elements. The microorganisms evaluated increased the nutrimental absorption, growth and production of plants developed in the substrate.