THE SPRAYING CAMPAIGN 



335 



The next spraying should follow immediately after the petals 

 fall. This is three pounds paste arsenate of lead in 50 gallons 

 summer lime-sulfur. The poison is for the codling moth which 

 enters through the calyx cup of the fruit. The lime-sulfur is to 

 combat scab, rot and rust diseases. 



These same spray materials should be applied again in about 

 ten days or two weeks. In special cases a third spraying with this 

 material ten days or two weeks after the last may be made. Spray- 



Fig. 239. — Large shears, e, will hasten the pruning work; hand shears, /, are necessary 

 for small trees and twigs. The hole pruner, q, aids in the high tops. The heavy pruning 

 knife with hooked blade is used on small limbs and for smoothing the saw work. (Nebraska 

 Station.) 



ing later than this will not be necessary except where bitter rot 

 is likely to attack the crop. In that case a summer campaign may 

 be necessary, spraying every two or three weeks according to the 

 frequency of rainfall. This would be practiced only in special 

 cases, and should be considered somewhat experimental. The 

 material recommended is Bordeaux mixture made with four 

 pounds of copper sulfate to six pounds fresh ^unslaked lime in 50 

 gallons of water. 



