644 



THE MOISTTHLY BULLETIN. 



turned brown and dried up, were examined in the late spring of 1913. 

 Absolutely no fruit buds had developed the previous season, conse- 

 quently the leaf-roller was responsible not only for the loss of the crop 

 during the season when they defoliated the trees, but the succeeding 



Fig. 361 — Work of the fruit-tree leaf-roller on apples. 1, apples 

 picked on June 8, when they were from five eighths to three quarters 

 of an inch in diameter, showing the characteristic injury from the leaf- 

 roller ; 2, apples picked from the same orchard on August 9, when they 

 were about two inches in diameter. (After Gillette and Weldon, Clr. 

 5, Colo. State Ent.) 



season as well. These orchards inspected were treated during the 

 spring of 1913 with a soluble oil spray so that the leaf-roller was practi- 

 cally eradicated and the foliage was fine, but no fruit was present. 

 The fact that a severe attack by this pest during any one season may 



