ORCHARD INSECTS OF THE PACIFIC NORTHWEST 77 



Figure 83. — Codling moth bait in position in apple tree. 



ORCHARD METHODS AND SANITATION 



The effectiveness of spraying may be increased by planting trees 

 at such a distance apart that the branches will not interlock, by 

 pruning them in such a manner that all parts may be sprayed thor- 

 oughly, and by thinning the clusters of fruit so that only one fruit 



