A proposal for re-evaluating the most probable number procedure for estimating numbers of Bradyrhizobium spp
1996
Menyah, M.K. | Sato, K.
The reliability of the most probable number (MPN) method for estimating bradyrhizobial numbers was evaluated by comparison with the plate count procedure. MPN estimates increased with time of nodulation scoring after seedling inoculation through 6 weeks of incubation. Ratios of MPN to plate counts increased as the bradyrhizobial cell suspension concentration increased. The MPN method could not detect Bradyrhizobium japonicum numbers at concentrations of 10(3) colony forming units (CFU) ml-1 and below. A proposal for re-evaluating MPN estimates is discussed.
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