256 FARM FRIENDS AND FARM FOES 



the beans inside are also liable to be affected. If such 

 beans are planted, they are liable to start the disease in the 

 new crop. Consequently, the selection of seed from fields 

 or pods in which the fungus is not present is the most 

 promising preventive measure. It is also desirable to burn 

 infested vines after harvesting as well as to rotate the crop 

 and select for it high, well-drained land. 



The Cotton Anthracnose is an important disease in 

 many Southern states. It occurs especially upon the bolls, 

 but also affects other parts of the plant. The injury to 

 the bolls is suggestive of that upon bean pods, and the af- 

 fected bolls are likely to result in infected seed. 



The Anthracnose of Raspberry and Blackberry is an- 

 other widespread disease. It produces characteristic red- 

 dish purple spots upon the young canes in spring and sum- 

 mer. The centers of the spots later become grayish white, 

 and the spots enlarge, often running together and forming 

 blotches. The spores are developed in dotlike elevations. 



The best means of controlling this malady are found in 

 the removal of affected canes, frequent rotation of the 

 plantation, and spraying with fungicides. The self-boiled 

 lime-sulphur wash would seem worthy of trial in an ex- 

 perimental way. 



Still another Anthracnose affects green grapes, producing 

 a characteristic injury that is sometimes called Bird's-eye 

 Rot. It occurs upon leaves and branches as well as the 

 fruit, but is most destructive to the latter. The destruc- 

 tion of diseased portions is an important preventive measure. 



CLUBROOT OF CABBAGE 



This disease is caused by a low form of parasitic fungus 

 that is classed with the group of Slime Molds rather than 



