Some Important Pear Diseases. 287 



where this disease prevails. Five or more sprayings have not given 

 perfect protection ; but they have been extremely profitable on the 

 American, French, and Japan stocks generally. In large nurseries, and 

 with horse power machines, the cost should not exceed twenty- five 

 cents for each 1,000 trees. 



References to Literature. 



Chester, F. D.— The Treatment of the Leaf Blight of the Fear and 



Quince. Bulletin 13, Delaware Experiment Station, 1891. 

 Present Status of Knowledge on the Treatment of Pear Leaf 



Blight. Report Delaware Experiment Station, 1 891, pp. 44-46. 

 Fairchild, D. G. — Pear Leaf Blight. Abstract in Report Department 



Agriculture, 1892, p. 226. 

 Fairchild, D. G. — Experiments in Preventing Leaf Diseases of Nursery 



Stock in Western New York. Report New York Experiment 



Station, 1892, pp. 642-652. 

 Experiments with Fungicides to Prevent Leaf - Blight of Nursery 



Stock. Journal Mycology VIII., No. 4, pp. 338-351. 

 *Galloway, B. T. -Experiments in the Treatment of Pear Leaf Blight, 



Cracking and Scab. Bulletin 3, Div. Vegetable Pathology, pp. 36- 



47, 1892. 

 The effect of Spraying with Fungicides on the Growth of Nursery 



Stock. Bulletin 7, Div. Vegetable Pathology, 1894. 

 Kinney, L. F. — The Leaf Blight of the Pear. Bulletin 27, Rhode Island 



Experiment Station, 1894. 

 Treatment of Pear Orchard. Bulletin 31, Rhode Island Experiment 



Station, 1895. 

 Scribner, F. L. — Leaf-Blight and Cracking of the Pear. Report United 



States Department Agriculture, 1888, pp. 357-364. 

 Fungus Diseases of the Grape and Other Plants, pp. 101-104. 

 Sorauer, p. — Pflanzenkrankheiten, zweite auflage, II., pp. 372-377. 

 TUBEUF. — Diseases of Plants introduced by Cryptogamic Parasites, Eng- 

 lish Edition. 

 Waite, M. B. — Treatment ot Pear Leaf-Blight in the Orchard. Journal 



Mycology, VIL, No. 333-33^- 



* 



See, also, bibliography of pear scab. 



