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DISEASES OF ECONOMIC PLANTS 



many states. From 50 to 100 per cent damage was reported 

 from Nel)raska in 1905. The disease is discussed under 

 watermelon. 



Southern blight (Sclerotium Roljsii Sacc. in litt.). — 

 A large percentage of the cantaloupe crop in the southern- 



FiG. 101. — Leaf spotted with downy mildew. Original. 



most states is often destroyed by this disease. It is par- 

 ticularly noticeable on fruit upon the side touching the 

 ground, first as a slight rot, followed by a white fringe of 

 fungous threads which soon surround the whole fruit. 

 Later sclerotia appear as small round bodies, dirty white 

 to dark brown. For further description and treatment, 

 see pepper. 



