PRESENTATION

✤   Bacteria gram negative, with a aerobic metabolism, without endospore, motile or not

✤   Free living bacteria with a role in conversion of ammonia to nitrate (nitrification) :

      -

Nitrosomonas spp

. are invoved in the nitritation (oxidation of ammonium into nitrite)

      -

Nitrobacter spp

. are involved in the nitratation (oxydation of nitrite into nitrate)

ANALYSIS

✤   Determination of the viable propagules number of

Nitrosomonas spp.

or

Nitrobacter spp.

      The results are expressed as CFU (Colony Forming Unit)

SAMPLES

✤   Sols

✤   Inoculums

✤   Biofertilisants, engrais, amendements