8 MICROORGANISMS IN SOILS AND WATER BASINS 



the given soil (Table 2). Despite all these factors, the microbiological 

 population of the soil throughout the world has certain definite and 

 common characteristics and comprises certain well-defined, specific 



TABLE I. INFLUENCE OF SOIL TREATMENT ON NUMBER 

 OF MICROORGANISMS 



MICROORGANISMS FOUND* 



Bacteria Actinomycetes Fung 

 3,000 1,150 60 



5,410 2,410 23 



5,360 1,520 38 



2,690 370 112 



From Waksman (925). 



* In thousands per gram of soil as determined by plate method. 



TABLE 2. INFLUENCE OF GROWING PLANTS ON NUMBER 

 OF MICROORGANISMS IN THE SOIL 



