Measurements of the scion and interstem circumferences, tree 

 height, and tree spread in 1979 indicate that the Empire trees 

 are larger than those of Millerspur Delicious. The interstem 

 portion of the trunk is misshapen on some trees (Fig. 2)perhaps 

 due to the presence of burr knots (adventitious roots which disrupt 

 the continuity of the bark) . The numbers of burr knots on the 

 interstem portion vary considerably among trees. 



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Fig. 2 . The presence of burr 

 knots on the M9 stempiece (with 

 the lower white line in its 

 center) of interstem trees 

 disrupts the continuity of the 

 bark and as shown in the picture 

 can cause distortion of the 

 stempiece. 



Stephen Long - Photo Center 



The data from the 10 states is being summ.arized and will appear 

 in a future issue of Compact Fruit Tree . 



