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SURVIVAL OF BACTERIUM COLI TYPE I AND STREPTOCOCCUS FAECALIS IN SOIL
Author(s) -
CUTHBERT W. A.,
PANES J. J.,
HILL E. C.
Publication year - 1955
Publication title -
journal of applied bacteriology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 0021-8847
DOI - 10.1111/j.1365-2672.1955.tb02097.x
Subject(s) - soil water , incubation , peat , streptococcus , bacteria , inoculation , biology , soil type , microbiology and biotechnology , veterinary medicine , botany , ecology , horticulture , biochemistry , genetics , medicine
SUMMARY: Differences have been noted in the numbers of excretal organisms isolated from water supplies coming from gathering grounds with soils of different types. Those from acid moorlands normally contained smaller numbers of Bact. coli type I than those from limestone areas, although the numbers of animals present in the areas were approximately the same. The technique is described for a study of the effect of soils from these areas on the survival of excretal organisms. Incubation of samples of the soils after inoculation with Bact. coli type I and with Strep. faecalis has shown that both organisms will persist in the limestone soils for several weeks but die out in a few days in acid peat soils. When chalk is added to the acid soils both organisms were able to persist for several months. It is suggested that survival is largely governed by pH.