There is provided an inoculant composition for sucrose-rich crops improving production with reduced use of nitogen fertilizer, which comprises Gluconacetobacter in suspension in a suitable culture medium, wherein the Gluconacetobacter being in an amount suitable for inoculation of the crops. There is also provided, a method for improving production of sucrose-rich crops with reduced use of nitrogen fertilizer, which comprises inoculating the sucrose-rich crop with the Gluconacetobacter inoculant composition.