APPENDIX. 



SPRAYING CALENDAR. 



This spraying calendar is taken almost entirely from Bul- 

 letin 89 of the Iowa Experiment Station, by Prof. S. A. Beach and 

 B. E. Little. The changes made from the original are noted. 



General Treatment For The Apple. 



When to Spray. What to Spray With and What For. 



1. When the green Bordeaux mixture for scab, canker and 

 tips of the first leaves leaf spot diseases with Paris Green or 

 burst the buds. May be other arsenical poison for bud moths, 

 omitted if insects and case bearers, tent caterpillars, canker 

 scab are not abundant. worms and other leaf-eating insects. 



2. Just before the bios- Bordeaux mixture for diseases men- 

 soms open. tioned under 1. Paris Green or other ar- 

 senical poison for curculio and the In- 

 sects mentioned under 1. The most Im- 

 portant single treatment against the scab! 



3. Just after the bios- Bordeaux mixture for diseases mentlon- 

 soms fall. ed under 1. Paris Green or other arseni- 

 cal poison for codlin moth, curculio and 

 leaf eating insects. The most important 

 treatment In fighting codlin moth! 



4. Ten to twenty days Bordeaux mixture for scab, bitter rot 

 after 3. and other diseases. Paris Green or other 



arsenical poison for codlin moth curcullo 

 and leaf-eating insects. 



5. Late July or early Bordeaux mixture for scab, bitter rot, 

 August. fly speck, sooty blotch and other diseases. 



Paris Green or other poison for second 

 brood of codlin moth. Important! 



Special treatment early Lime-sulfur wash for oyster shell 

 spring before buds break, scale and other scale Insects. 



