WOUND DRESSINGS ON APPLE TREES 



13 



10 











— 





— 











I 



A 



I 









1 





< o 



x 

 o 



10 



T 



C 



I 



1 



i 



t 



CHECK NO. 541 N0.54I+ N0.540 N0.540+ SHELLAC WHITE 

 (NO GASOLINE GASOLINE LEAD AND 

 TREATMENT) LINSEED OIL 

 v TREATMENT J 



□ CHANGE IN LONGITUDINAL DIAMETER gj CHANGE IN TRANSVERSE DIAMETER 



Figure 6. — Averages for the treatments shown by months in figures 1 and 2: 

 A, At end of first season; B, at end of second season. The lines represent 

 the original wound size (25 millimeters). Figures above indicate wound 

 extension by dying of tissue and figures below indicate decrease in wound 

 size by healing. 



compared. As the spring applications were made at the time when 

 pruning wounds are usually made and treated, a comparison of the 

 relative injury and healing of those wounds may be as important as or 

 more important than that of wounds made at any other time. The 

 relative merits of the different dressings should be studied by com- 

 paring the monthly data with the averages for the spring months and 

 for all months. The effect of the spring application, however, will not 

 be discussed separately for each treatment. 



