PLATE 6 



Late stage in the development of the disease, showing the beet as a dry shell par- 

 tially filled with a pithy residue composed of mycelium and dead host tissue. The 

 decay of tlie crown of this beet is a result of the fungus working upward from the point 

 of infection below the surface of the soil. Remnants of the concentric rings of typical 

 lesions are clearly visible. The cracking of the outer surface of the beet at this stage 

 is shown to extend beyond the lesions. 



