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Kansas State Board of Agriculture. 



SOME ALFALFA DISEASES UNREPORTED IN KANSAS. 



The farmers of this state are urgently requested to be on the lookout 

 for the occurrence of the following diseases : 



CROWN WART OF ALFALFA (Urophlyctis alfalfas). The chief character- 

 istic of this disease is the presence of a gall or wart at the base of the 

 stem. (See Fig. 299.) This gall is produced by a fungus parasite which 

 gains entrance into the crown of the plant, and, stimulating the tissues, 

 it produces a malformation. Occasionally the warts may occur on the 

 stems several inches from the ground. They vary in size from that of 



FIG. 296. A dead patch in an alfalfa field caused by red or violet root rot. 

 second season's attack. 



Fia. 297. Bed or violet root rot attack; dead area 100 by 150 feet in an old field. 



