TECHNOLOGY FOCUS - BIOLOGY - Preferred Microorganisms: The consortium comprises mycorrhizal fungi, actinomycetes, bacteria of the rhizosphere, saprophytic fungi, and/or micromycetes. The mycorrhizal fungi are Glomus, Acaulospora, Gigaspora, or Scutellospora, preferably Glomus coronatum, G. celedonium, G. intreradices, G. mossaea, G. viscosum, G. glomaceae, G. fasciculatum, G. claroideum, G. etunicatum, G. epigaeum, G. lamellosum, G. monosporum, Acaulospora longula, A. laevis, Gigaspora ramisporophora, G. gigantea, G. rosea, G. calospora, or Scutellospora calospora. The actinomycetes are Streptomyces griseus or S. avernichilis. The bacteria of the rhizosphere is Pseudomonas, Bacillus, Enterobacteriaceae, Paenibacillus, Alcanivorax, Candida, Rhodococcus, Acitenobacter, Mycobacterium, Serratia, or Agrobacterium, preferably Pseudomonas borealis, P. fluorescens, P. synxantha, P. corrugata, P. aeruginosa, P. chlororaphis, P. trivelis, Paenibacillus favisporus, Alcanivorax vanetianus, Rhodococcus erythropolis, Acitenobacter calcoaceticus, A. radioresistens, Mycobacterium thermoautotrophicum, Serratia marcescens, Agrobacterium radiobacter, Bacillus substilis, B. megaterium, B. polymyxa, or B. licheniformis. The saprophytic fungi are Trichoderma, Coniothyrium, Beauveria, or Gliocladium, preferably Trichoderma barrtianum, T. viridae, T. aureoviridae, T. atroviridae, T. koningii, T. virens, T. Hypocrea schweinitzii an., Coniothyrium minitans, Gliocladium calenulatum, or Beauveria bassiana. The micromycetes are Mortierella, Aspergillum, Sclerotium, Ulocladium, Arthrobotrys, or Mucor, preferably Mortierella isabellina, Aspergillus niger, Ulocladium oudemansii, or Arthrobotrys oligospora. Preferred Composition: The product comprises not less than 6 (preferably 10-20) wt.% mycorrhizal fungi and not less than 1x106 (preferably 5-10x106) CFU/g bacteria of the rhizosphere. The saprophytic fungi and micromycetes are present in an amount of not less than 1x106 (preferably 5-10x106) CFU/g. The actinomycetes are present in an amount of not less than 1x106 (preferably 5-10x106) CFU/g. The micromycetes are present in an amount of not less than 1x106 (preferably 5-10x106) CFU/g.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Materials: At least one natural biosurfactant associated to the microbiological consortium is cyclodextrin.    TECHNOLOGY FOCUS - POLYMERS - Preferred Materials: At least one synthetic biosurfactant is polyethylene sorbitol ester. EXAMPLE - Potato crops (3.5 kg) were treated with microbiological consortium of endomycorrhizal symbient fungi of the genus Glomus (G. viscosum, G. coronatum), bacteria of the rhizosphere (Pseudomonas fluorescens, Pseudomonas spp., Bacillus subtilis, and Streptomyces spp.) and antagonistic saprophytic fungi (Trichoderma spp.) to a minimum extent of 5x106 CFU/g. Nitrates were 63.4 mg/kg. Potato crops (3.3 kg) without the microbiological consortium had 87.0 mg/kg nitrates.