302 CONTROLLING INSECTS AND DISEASES 



The same suggestions relative to lime and lignin-pitch as those men- 

 tioned under delayed-dormant spray are followed. Where arsenical 

 injury has been severe in the past, 2 pounds lime to each pound of lead 

 arsenate is suggested. 



If home-made wettable sulfur is being used, % pound of skim milk 

 powder or 1 pound of soybean flour may be included in the spray 

 mixture as a spreader. 



This application will also afford protection against rose leaf-beetle 

 or rose chafer in orchards where these pests are a problem. 



If dust is used, a 90-10 sulfur-lead-arsenate mixture is indicated. 



First Apple-Maggot Spray, or Second Codling-Moth Spray (about 



June 25 to July 1) 



1. Formula for varieties ripening later than Mcintosh and Cortland. 

 Wettable sulfur (at manufacturer's directions) 



or 



Lime-sulfur (if scab is a problem) 2 gallons 



Lead arsenate 3 pounds 



Water to make 100 gallons 



For a spreader at this time, % pound of skim milk powder or 1 pound 

 of soybean flour may be used with lime-sulfur or in home-made wettable 

 sulfur. If dust is used for this application, a 90-10 sulfur-lead-arsenate 

 mixture is suggested. One pound of lime is used with each pound of 

 lead arsenate. Where arsenical injury has been severe in the past, 

 2 pounds lime to each pound of lead arsenate is suggested. 



2. Formula for Mcintosh, Cortland, and other early varieties. 

 Wettable sulfur (at manufacturer's directions) 



or 



Lime-sulfur (if scab is a problem) 2 gallons 



Calcium arsenate-* 3 pounds 



Hydrated lime 9 pounds 



Water to make 100 gallons 



The same suggestions relative to spreader as those mentioned in the 

 first codling-moth cover spray are followed. If dust is used, a 90-10 

 sulfur-lead-arsenate mixture is indicated. 



* Basic zinc arsenate, 3 pounds, may be substituted for calcium 

 arsenate. One pound of lime is used with each pound of zinc arsenate. 



