Length of Incubation for Enumerating Nitrifying Bacteria Present in Various Environments1

AUTOR(ES)

Matulewich, V. A.

RESUMO

The effect of incubation time on most-probable-number estimates of autotrophic nitrifying bacteria was investigated by using waters, rooted aquatic plants, sediments, and slimes as inoculum sources. Maximum most probable numbers of the NH4+-oxidizing group were attained in 20 to 55 days (median, 25). Estimates of NO2- oxidizers were highest at termination (103 to 113) days.

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