SUMMARY 



1. In general, at least five sprays are needed to secure good fruit. 



2. Thoroughness and timeliness of application, especially good coverage 

 of the tops of the trees, are important in securing good control of 

 diseases and insects. 



3. Efficiency of man labor and machine operations are important in 

 spraying, but often the most essential thing is to cover the orchard 

 within a definite time even though the cost may be increased. 



4. An adequate supply of water, easily and quickly available, is an im- 

 portant factor in efficient spraying. 



5. The cost of spraying is a small part of the total cost of apple pro- 

 duction, and good fruit is so essential to success that the five standard 

 sprays should be applied normally. If the equipment and labor are 

 available, the out-of-pocket cost of an additional (marginal) spray 

 is very small. 



6. The medium-sized spray outfit seems most efficient for small orchards 

 or those with rough topography. 





