RASPBERRY DISEASES 415 



September ; and (3) again the following spring from the bursting 

 of the buds to the setting of the fruit. Future experience may 

 prove spraying a more beneficial measure of control. 



REFERENCES 



Stewart, F. C., and Eustace, H. J. Raspberry cane blight and rasp- 

 berry yellows. New York (Geneva) Agr. Exp. Sta. Bui. 226: 

 331-366. 1902. 



Stewart, F. C. Notes on New York plant diseases, I. Cane blight, 

 Leptosphceria Coniothyrium (Fckl.) Sacc. New York (Geneva) 

 Agr. Exp. Sta. Bui. 328 : 387-389. 1910. 



Jackson, H. S. Raspberry cane blight. Oregon Crop Pest and Hort. 

 Bienn. Rept. 1911-1912 : 264. 1913. 



Gloyer, W. O., and Fulton, B. B. Tree crickets as carriers of Lepto- 

 sphceria Coniothyrium (Fckl.) Sacc. and other fungi. New York 

 (Geneva) Agr. Exp. Sta. Technical Bui. 50 : 1-22. 1916. 



Clinton, G. P. Notes on fungous diseases, etc., for 1906. Raspberry 

 wilt, Leptosphceria Coniothyrium (Fckl.) Sacc. Connecticut Agr. 

 Exp. Sta. Rept. 1906 : 321-324. 1907. 



LEAF-SPOT 



Caused by Septoria Rubi Westd. 



This disease is less troublesome on raspberries than on black- 

 berries and dewberries. It has been reported from several 

 eastern and middle western states, but no cases of severe injury 

 are recorded. 



The spots often appear as early as the middle of June in the 

 form of whitish or faintly brownish areas. Frequently they 

 are numerous, and in very severe cases an affected leaf dries up. 

 In rare cases this results in the development of inferior fruit 

 which is small, dry and tasteless. 



The disease is controlled by the use of bordeaux mixture, al- 

 though the foliage of raspberries is delicate, and susceptible to 

 injury by this fungicide. (See Blackberry, page 166.) 



