PEACH DISEASES 291 



cause is not known, but it is supposed that the factor here 

 involved is closely allied to that of peach-yellows (see page 286), 

 but that the two diseases are distinct and entirely independent 

 of each other. The disease is contagious ; the causal factor can 

 be carried by budding, although the disease may not come into 

 evidence until the second year after inoculation in this fashion. 



Control. 



So far as known, diseased trees have never been cured. Spray- 

 ing, watering, mulching and fertilizing have been of no avail. 

 The removal of diseased parts is not effective, as it is in the case 

 of fire blight of pears and similar diseases.. The only remedy 

 known is the removal and burning of diseased trees. To delay 

 this operation only means added loss. This procedure, if 

 pursued persistently, if all affected trees are systematically 

 marked and destroyed at the proper time, will yield satisfac- 

 tory results. The best orchard practice should be employed ; 

 favorable sites should be selected, only trees from reliable 

 nurseries should be planted, reasonable cultivation, fertilization, 

 spraying and pruning should be done. Observe the behavior 

 of all trees and remove suspicious ones. Nurserymen should 

 use care in bud-selection, taking every precaution against the 

 disease. 



REFERENCES 



Atwood, G. G. Peach yellows and little peach. New York State Agr. 

 Dept. Bui. 61 : 1721-1742. 1914. 



Blake, M. A. Peach yellows and little peach. New Jersey Agr. Exp. 

 Sta. Bui. 226 : 3-26. 1910. 



Taft, L. R. Spraying calendar for 1898. Little peach. Michigan 

 Agr. Exp. Sta. Bui. 155 : 303-304. 1898. 



Smith, E. F. Notes on the Michigan disease known as "little peach. " 

 Fennville (Mich.) Herald. Oct. 15, 1898. 



Cassar, L. Peach diseases. Peach yellows and little peach. Ontario 

 Agr. Dept. Bui. 201 : 43-59. 1912. 



Stevens, F. L.. and Hall, J. G. Little peach. In Diseases of Eco- 

 nomic Plants, p. 139. 1910. 



