44 



Martin J. Prucha 



plants in order to see to what extent an infection from neighboring flower- 

 pots may take place. 



TABLE 8. Infecting Power of Varioxjs Cultures. B. radicicola Was Propagated 

 FOR Three Weeks on the Different Media 



Medium 



Number 



of 



plants 



inoculated 



Total 

 number 



of 

 nodules 



Number 



of 

 nodules 

 per plant 



Medium 334, 10 cc. 



+ 



+ 0.1 cc. N/1 HCl 



+ 0.5 cc. N/1 HCl 



+ 1.0 cc. N/1 HCl 



+ 1.5 cc. N/1 HCl 



+ 2.0 cc. N/1 HCl 



+ 3.0 cc. N/1 HCl 



+ 



+ 0.1 cc. N/1 NaOH.... 



+ 0.5 cc. N/1 NaOH.... 



+ 1.0 cc. N/1 NaOH.... 



+ 1.5 cc. N/1 NaOH.. .. 



+ 2.0 cc. N/1 NaOH.. .. 



+ 3.0 cc. N/1 NaOH.. . . 



+ 0.1 per cent cane sugar 



+ 0.5 per cent cane sugar 



+ 1-0 per cent cane sugar 



+ 1.5 per cent cane sugar 



+ 2.0 per cent cane sugar 



+ 3.0 per cent cane sugar 



+ 4.0 per cent cane sugar 



+ 6.0 per cent cane sugar 



+ 8.0 per cent cane sugar 

 + 10.0 per cent cane sugar 



Medium 335, 10 cc. 



+ 



+ 0.1 cc. N/1 HCl 



+ 0.5cc. N/1 HCl 



+ 1.0 cc. N/1 HCl 



+ 1.5 cc. N/1 HCl 



+ 2.0CC. N/1 HCl 



+ 3.0CC. N/1 HCl 



+ 0.1 cc. N/1 NaOH 



+ 0.5CC. N/1 NaOH 



+ 1.0 CC. N/1 NaOH 



+ 1.5 cc. N/1 NaOH 



+ 2.0CC. N/1 NaOH 



+ 3.0cc. N/1 NaOH 



42 



265 



6.3 



50 



320 



6.4 



43 



188 



4.3 



32 











38 



6 



0.2 



53 



22 



0.4 



35 



7 



0.2 



37 



184 



5.0 



43 



275 



6.4 



48 



234 



4.9 



47 



304 



6.5 



34 



168 



4.9 



27 



94 



3.5 



27 



75 



2.8 



46 



182 



4.0 



35 



124 



3.5 



32 



117 



3.7 



48 



198 



4.1 



38 



140 



3.7 



29 



125 



4.3 



35 



138 



3.9 



33 



132 



4.0 



33 



110 



3.3 



30 



85 



2.8 



29 



132 



4.6 



34 



183 



6.4 



50 



6 



0.1 



68 











50 



22 



0.4 



56 



5 



0.1 



68 



4 



0.1 



33 



186 



5.6 



32 



131 



4.1 



30 



212 



7.1 



36 



284 



7.9 



30 



180 



6.0 



21 



109 



5.2 



