VEGETABLE AND FIELD CROPS 



301 



and eventually leaves and stalk die, though the stalk re- 

 mains standing with its dead leaves still clinging to it. 



Fig. 131. — Tobacco plant in early stage of the Granville wilt. Original. 



At the stage of earliest wilting a section across the stem 

 shows a yellowish discoloration of the woody portion. In 



