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Ciência Rural

Print version ISSN 0103-8478On-line version ISSN 1678-4596

Abstract

CONCEICAO, Patrícia Marluci da et al. Effect of the humic acids in endophytic diazotrophic bacteria inoculation in corn seeds. Cienc. Rural [online]. 2009, vol.39, n.6, pp.1880-1883.  Epub July 10, 2009. ISSN 0103-8478.  http://dx.doi.org/10.1590/S0103-84782009005000137.

The objective of this research was to evaluate the effect of the humic acids in the inoculation of endophytic diazotrophic bacteria in corn seeds. It was used the bacteria Herbaspirillum seropedicae Z67 BR 11175. The inoculation of the seeds with the bacteria and the addition of humic acids were accomplished by the coating of the corn seeds UENF 506-8. The coating was accomplished with a mixture of lime, semi-solid middle culture, water and cement. The seeds covered were sown in Leonard vases. Forty days after sowing the plants were collected and the bacteria couting was accomplished in the roots by the Most probable Number technique. The results showed that the humic acids doesn't interfere negatively in the bacteria growth of and they stimulate the colonization of the native microbiota. However, in the appraised conditions, the united application of bacteria + humic acids didn't stimulate the growth of the bacteria population inoculated in the corn seedling.

Keywords : coating; diazotrophic bacteria; humic acid; Leonard vase.

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