38 



Levi Otto Gratz 



detail, except to point out briefly some of the variations in the method. 

 Similar moisture series were maintained in each of the experiments, 

 except in the first of these trials (table 10), in which the highest moisture 

 content was greater than 51 per cent (saturation). The other differences 



Per cent of 

 damping-off 



80 

 GO 

 40 

 20 

 



100 

 80 

 60 

 40 

 20 

 



100 

 80 

 60 

 40 

 20 

 



'00<T/ + 



oo% + 



Temperature 20-2/ 



20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 

 Hours after inoculation 



Figure 7. influence of different soil temperatures and soil moistures on 

 rate of damping-off of cabbage seedlings caused by corticium vagum 



(TABLE 10, TRIAL VIl) 



Soil moistures are given as percentages^ 



