There is provided an inoculant composition for sucrose-rich crops improvingproduction with reduced use of nitogenfertilizer, which comprises Gluconacetobacter in suspension in a suitableculture medium, wherein the Gluconacetobacter beingin an amount suitable for inoculation of the crops. There is also provided, amethod for improving production of sucrose-richcrops with reduced use of nitrogen fertilizer, which comprises inoculating thesucrose-rich crop with the Gluconacetobacter inoculant composition.