288 



iHE SUGAR BEET. 



its root has finally penetrated the stratum wanting in 

 oxygen; the disease immediately declares itself in this 

 portion, and, after a very limited time, succeeds in 



Fig. 80. 



The beet growing, the end of the root penetrating the portion where the 

 ends of previous roots still exist. 



attacking the entire beet. At first the leaves have 

 their brown spots, droop, etc., as in the case before 



