PLUM DISEASES 355 
bank, Satsuma and others suffer a 
great deal more than other promi- 
nent varieties. Careful observa- 
tions along this line seem desirable. 
Brown-rot of plum is a disease 
also found on the peach and cherry 
(see pages 270 and 170, respectively). 
On these last two fruits the disease 
is perhaps more destructive than on 
plums. The common occurrence 
of the disease on all these hosts 
gives it a wide range over this and 
other countries. Losses in various 
parts of the United States are es- 
timated at 30 to 100 per cent on 
susceptible plums. At times twig- 
blight is caused by the fungus 
(Sclerotinia cinerea); this type of 
injury has been reported from Iowa nr ae eg eee 
and New York. The Red June, mummified by the brown-rot 
Wickson and other upright-growing fungus. 
varieties are peculiarly susceptible 
to the twig-blight form of this disease. In the Pacific 
Northwest blossom-blight and mold in transit are important 
phases of brown-rot on prunes. 
A more complete discussion is given under Peach, page 270. 
we 
REFERENCES 
Hesler, Lex R. Diseases of the plum. Brown rot. In The Fruit 
Industry in New York State. New York Agr. Dept. Bul. 79: 
1192-1195. 1916. 
Brooks, Charles, and Fisher, D. F. Brown rot of prunes and cherries 
in the Pacific Northwest. U.S. Agr. Dept. Bul. 368: 1-10. 1916. 
Stewart, F. C. Notes on New York plant diseases, I. Plum. Twig 
blight and canker, Sclerotinia fructigena (Pers.) Schrt. New York 
(Geneva) Agr. Exp. Sta. Bul. 328 : 381-383. 1910. 
