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ILLINOIS NATURAL HISTORY SURVEY CIRCULAR 51 



Wrapping 



Protect the trunks of newly planted trees that have smooth 

 bark from sunscald, drying, and borer attacks by wrapping them 

 with special tree-wrapping crepe paper, Kraft wrapping paper 

 of at least 40-pound weight, burlap, or other suitable material. 

 The trunks of trees with coarse or rough bark should be treated 

 with DDT instead of being wrapped. Information on borer con- 

 trol is given in Survey Circular 47, "Illinois Trees and Shrubs : 

 Their Insect Enemies." 



Crepe paper reinforced with asphalt is effective in prevent- 

 ing borer injury (Fig. 22). In addition to acting as a barrier, the 



Fig. 21 (Above). — Bare guys or 

 wires that encircle tiie trunk and 

 that are too tight or left on too long 

 will girdle the trunk. Such girdling 

 frequently prevents enlarging of the 

 trunk below the girdle as shown 

 here. 



Fig. 22 (Right).— Wrapping the 

 trunks of newly planted trees pro- 

 tects the bark from excessive drying, 

 .sunscald, and borer injury. 



