SPRAYING 



93 



have the merit of conveying the latest information 

 and of suggesting the necessary local adjustments 

 of praatice. 



In this connection, speaking both of bulletins and 

 of the spraying campaign, we may reproduce by 

 way of illustration the excellent program arranged 

 by Prof. S. A. Beach for use in Iowa. 



SPRAYING CAMPAIGN 



WHEN TO SPRAY 



WHAT TO SPRAY FOR 



1. When the green tips of 

 the first leaves get as 

 large as mouse ears. 



Apple scab, canker and leaf 

 spot, bud moths, canker- 

 worms, case bearers, tent cat- 

 erpillars, and other leaf-eating 

 insects. Where apple scab 

 and insects have not been 

 abundant or where the trees 

 have been sprayed during the 

 dormant season, treatment at 

 this time may he omitted. 



2. Just before the blossoms 

 open. 



Apple scab, canker and leaf 

 spot. Curculio, and all insects 

 mentioned in 1. The most 

 importajit single treatment 

 against the scab. 



3. Just as the last of the 

 apple blossoms are fall- 



Apple scab and other diseases. 

 Codling moth, curculio and 

 insects mentioned in 1. The 



most impoi-tant single spray 

 against the codling moth. 



4. From 10 to 20 days later 

 than 3. 



Apple scab, bitter rot and 

 other diseases. Insects as 

 mentioned in 3. Where bitter 

 rot and blotch are trouble- 

 some, bordeaux is recom- 

 mended rather than lime- 

 sulphur. 



5. In late July or early Au- 

 gust, or about 10 weeks 

 later than 4. 



Bitter rot, scab and other dis- 

 eases. Codling moth and 

 other insects. Very important 

 in fighting second brood cod- 

 ling moth. 



