176 MANUAL OF FRUIT DISEASES 



if necessary. If lime-sulfur solution is used, the strength 

 advised is 1 to 50, with iron-sulfate one and one-fourth pounds 

 to fifty gallons of the diluted solution. This mixture is used 

 with safety, particularly with the addition of iron-sulfate, which 

 reduces the burning qualities and increases adhesiveness. 

 Sulfur dust, used at the rate of ninety parts finely ground sul- 

 fur to ten parts powdered lead arsenate, has been found to be 

 effective. 



In the nursery the same fungicides are recommended. The 

 first application should be made when the cherry buds are 

 about eight to twelve inches high. Subsequent applications 

 depend on the weather. As a rule, five to seven applications 

 at intervals of two weeks are sufficient. The earlier applica- 

 tions often can be made advantageously at shorter intervals 

 in order to keep the new growth covered. 



REFERENCES 



Stewart, V. B. The yellow-leaf disease of cherry and plum in nursery 



stock. Cornell Univ. Agr. Exp. Sta. Circ. 21 : 1-10. 1914. 

 Stewart, V. B. Some important leaf diseases of nursery stock. The 



yellow-leaf disease of cherry and plum. Cornell Univ. Agr. Exp. 



Sta. Bui. 358 : 184-192. 1915. 

 Stewart, V. B. Dusting nursery stock for the control of leaf diseases. 



Experiment for the control of leaf spot of the cherry. Cornell 



Univ. Agr. Exp. Sta. Circ. 32 : 5-6. 1916. 

 Higgins, B. B. Contribution to the life history and physiology of 



Cylindrosporium on stone fruits. Amer. Journ. Bot. 1 : 145-173. 



1914. 



Stewart, F. C., and Eustace, H. J. Notes from the botanical depart- 

 ment. Shot-hole fungus on cherry fruit-pedicels. New York 



(Geneva) Agr. Exp. Sta. Bui. 200 : 85-87. 1901. 

 Beach, S. A. Treatment of leaf spot in plum and cherry orchards 



in 1896. New York (Geneva) Agr. Exp. Sta. Bui. 117 : 135-141. 



1897. 

 Hein, W. H. Two prevalent cherry diseases. Cherry shot hole. 



Nebraska Insect Pest and PI. Dis. Bur. Bot. Div. Circ. 2 : 2-4. 



1908. 

 Fairchild, D. G. Bordeaux mixture as a fungicide. Cherry leaf 



blight. U. S. Agr. Dept. Veg. Path. Div. Bui. 6 : 38-39. 1894. 



