QUINCE DISEASES 393 
. Control. 
The vulnerable point of attack lies in the inability of the 
fungus to reinfect the quince. It must pass to the cedar. 
The most direct method of control is to exterminate cedars near 
the orchard. The juneberry and hawthorn are to be regarded 
as weeds in the sense that they harbor the undesirable pest, 
and should therefore be removed. Spraying quinces for the 
control of rust is not a reliable method of treatment. 
REFERENCES 
Stone, G. E., and Smith, R. E. The quince rust. Massachusetts 
Agr. Exp. Sta. Rept. 10: 61-63. 1898. 
Stewart, F.C. Notes on New York plant diseases, I. Quince. Rust, 
Gymnosporangium clavipes C. and P. New York (Geneva) Agr. 
Exp. Sta. Bul. 328: 385. 1910. 
Bailey, L. H. The quince in western New York. Rust. Cornell 
Univ. Agr. Exp. Sta. Bul. 80: 625-627. 1894. 
Halsted, B. D. Some fungous diseases of the quince fruit. The 
quince rust. New Jersey Agr. Exp. Sta. Bul. 91: 3-5. 1892. 
Halsted, B. D. The quince rust. New Jersey Agr. Exp. Sta. Rept. 
1892 : 307-310. 1893. 
Paddock, W. Plant diseases of 1901. Quince rust. Colorado Agr. 
Exp. Sta. Bul. 69: 18-20. 1902. 
Sturgis, W. C. Miscellaneous notes on fungi. Quince rust (Restelia 
aurantiaca Pk.). Connecticut Agr. Exp. Sta. Rept. 18: 137-138. 
1895. 
FRvuItT-SPoT 
Caused by Phoma pomi Passer. = Cylindrosporium pomi Brooks 
This disease was first noted on the quince in New Jersey in 
1892. It was subsequently observed in New Hampshire in 
1910 and in Connecticut in 1911. It is now common in New 
England. and in the Middle Atlantic region. The Orange 
quince seemg particularly susceptible. The disease also affects 
the apple and Chinese quince. 
Fruit-spot, or blotch, appears late in August or early in 
