48 N. J. Agricultural Experiment Stations Bulletin 356 



are indicated by circles. Diseased trees are designated in variously 

 colored squares or triangles, single or double, indicating the year in 

 which the tree became diseased, as described in the legend. 



Annual Loss from Each Orchard 



In order that the evidence may be presented in as clear a manner 

 as possible, tables have been prepared showing the annual loss from 

 yellows and little peach and the percentage of loss based on the num- 

 ber of trees originally planted. 



Orchard no. 1 was set in the spring of 1907, and consisted of 

 27 rows of 25 trees each, a total of 675 trees. The principal variety 

 was Elberta, set in square blocks of 25 trees with check rows of other 

 varieties to separate the plots. The data regarding this orchard are 

 given in table 2. 



The diseases first appeared in the third summer, when two trees 

 became infected before coming into bearing. The exact nature of 

 the disease, whether yellows or little peach, was not determined, as 

 it is difficult to distinguish between the two diseases in the early 



Table 3 



Peach Yellows and Little Peach Loss from Orchard No. 2, Vineland 

 550 Trees, Planted 1908 



♦Based on total trees in original planting. 



stages. In nearly every year there have been more cases of littl 

 peach than of yellows. Exceptions are 1911, with 5 cases of yellows 

 and no cases of little peach; 1913. with 8 cases of yellows and 3 

 cases of little peach ; 1916, with 8 cases of yellows and 2 cases of little 

 peach. Since 1916 the number of infestations with little peach have 



