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The possibility of using Winogradsky's direct method in soil analysis, in connection with the adsorption of bacteria by soil



The possibility of using Winogradsky's direct method in soil analysis, in connection with the adsorption of bacteria by soil



[bull Jard Bot Princ Urss] 26(6): 644-652



Adsorption of bacteria by soil into which have been introduced 100 million cells of B. prodigiosum, B. fluorescens or B. tumescens can not be observed, probably because washing with distilled water lessens the coagulation of the soil colloids and hence the adsorption of bacteria. The difficulty of obtaining a uniform distribution of bacteria and the large variation in numbers which results unless a large number of fields are examined is the most serious objection to the direct method. Both dead and live cells are dyed by it.

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