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OCT. MOV. DEC. JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEPT. 

 MONTH OF WOUNDING 

 OCHANGE IN LONGITUDINAL DIAMETER ■ CHANGE IN TRANSVERSE DIAMETER 



Figure 1. — Average changes by the end of the first season in longitudinal and 

 transverse diameters of 25-millimeter wounds made in apple tree limbs in 

 different months and immediately treated with various compounds. The 

 lines represent the original wound size (25 millimeters). Figures above 

 indicate wound extension by dying of tissue, and those below indicate de- 

 crease in wound size by healing. Each average includes at least five wounds. 



