Studies of Bacillus Radicicola of Canada Field Pea 



67 



TABLE 16. Average Number of Nodules per Plant in Third Test, Arranged in 



Numerical Order 



}vledium 



Organisms 



Number of 



living or 



nodules 



not Ii\dn 5* 



per plant 



+ 



12.3 



+ 



12.0 



+ 



10.5 



+ 



10.0 



+ 



9.8 



+ 



9.5 



+ 



9.5 



_i_ 



9.4 



+ 



9.4 



+ 



9.2 



+ 



9.1 



+ 



9.1 



+ 



8.6 



+ 



8.3 



+ 



7.9 



+ 



7.6 



+ 



7.5 



+ 



7.3 



+ 



6.7 



+ 



6.7 



+ 



6.6 



+ 



6.6 



+ 



5.9 



+ 



5.9 



+ 



5.3 



+ 



4.8 



+ 



4.5 



+ 



4.4 



+ 



3.9 



+ 



3.5 



+ 



3.1 



+ 



3.0 







1.6 



+ 



1.4 







0.3 







0.1 



































































Sandy soil 



Wheat middlings 



Medium 334 + 2 per cent glycerin 



IMedium 334 + 0.1 per cent asparagin 



Wheat bran 



Medium 334 + 1 per cent Merck's peptone. . . . 

 Medium 334 -j- 0.1 per cent potassium nitrate. . 



JMedium 334 + 1 per cent Witte's peptone 



Fresh cow feces 



Medium 334 + 0.6 per cent calcium nitrate. . . . 



Cornstarch 



Medium 334 + 0.5 per cent potassium citrate. . 

 Medium 334 + 0.2 per cent calcium nitrate. . . . 



Partly decomposed cow feces 



jMedium 334 + 2 per cent Witte's peptone . . . . 



^Medium 334 + 2 per cent mannite 



Corn meal 



Compost 



Medium 334 + 0.1 per cent calcium nitrate. . . . 

 Medium 334 + 0.6 per cent potassium nitrate. 



Medium 334 + 5 per cent gelatin 



Sawdust 



JMedium 334 + 2 per cent galactose 



Medium 334 + 0.2 per cent jNIerck's peptone . . 



Medium 334 + 2 per cent lactose 



Medium 334 + 2 per cent cane sugar 



Medium 334 + 2 per cent cane sugar 



Medium 334 + 2 per cent dextrose 



Medium 334 + 0.2 per cent potassium nitrate . 



Muck 



Medium 334 +10 per cent cane sugar 



Medium 334 + 20 per cent cane sugar 



Medium 334 + 0.2 per cent phloroglucin 



Medimn 334 +10 per cent cane sugar 



Medium 334 + 0.5 per cent potassium oxalate . 



Medium 334 + 5 per cent Witte's peptone 



Medium 334 + 40 per cent cane sugar 



Medium 334 + 0.5 per cent resorcin 



Medium 334 + 1 per cent sahcin 



Medium 334 + 0.5 per cent amygdalin 



Canada field pea hay , 



Canada field pea roots 



Soy bean hay 



Soy bean roots 



* + indicate.? living organisms; indicates no li\'ing orgs 



