20 



FARMERS BULLETIN 845. 



spray in the spring if the insect is to be controlled. In any case 

 thoroughness is a prime essential if good results are to be secured. 



All poor or hollow trees should be removed, and if badly infested 

 woodland is near by, the orchard trees should be banded with the 

 sticky substance previously mentioned or with tho new tree-bandino- 



FIG. 11. Spraying trees 85 feet high with high-power sprayer. Note thorough distribution of poison on 

 plate (9) located at top of tree. (Worthley.) 



