SECTION XLII. DISEASES OF COTTON 



Cotton wilt. Cotton wilt, often called black rot, causes 

 the plant to drop its leaves or wilt and then dry up. Most 



Photograph by U. S. Dept. of Agriculture 



WtS. 160. ON LEFT, A VARIETY OF COTTON RESISTANT TO WILT; 



ON RIGHT, ORDINARY COTTON 

 Many of the plants killed or stunted by wilt, 



plants die when bearing a full load of blooms and bolls. The 

 disease occurs chiefly in the southern half of the cotton belt, 

 and as far west as Louisiana. It is very common on certain 



238' 



