Recent Studies on Peach Yellows and Little Peach 23 



from the same nursery and planted the same year. The total losses 

 at Vineland amounted to 3.33 per cent by the end of the fifth summer, 

 while those at New Brunswick were 23.61 per cent. The figures at 

 the close of the sixth summer were 11.66 per cent for the Vineland 

 and 36.11 per cent for the New Brunswick trees. The total loss was 

 three times as great at the latter place. There are apparently condi- 

 tions under which trees readily become diseased while at other points 

 they do not, although no farther distant than % mile. 



Fig. 13— Mountain Rose Tree Affected With Little Peach at Time 

 of Planting in the Orchard. Growth Compact and Upright 



Fertilizers Had No Apparent Effect in Checking the Spread of 

 These Diseases at Vineland 



Smith 3 showed rather conclusively, as early as 1888, that applica- 

 tions of plant-food or fertilizers had no effect in checking the spread 



:! Smith, E. F., 1893. Experiments with Fertilizers for the Prevention and 

 Cure of Peach Yellows, 1889-92. U. S. Dept. Agr., Div. Veg. Path., Bui. 4. 



