126 OHIO EXPERIMENT STATION: MONTHLY BULLETIN 



high. The cylinder is imbedded in the cinders to a. depth of 2 

 inches. 



By renewing the cinders each fall and adjusting the cylinders 

 this method of prevention will carry the trees up to a period when 

 most of the danger is past ; the initial cost is rather high but it is 

 more permanent than any other method. 



Repellents. Fresh blood applied in the fall and again in mid- 

 winter serves as a repellent against rabbits. Trees may be rubbed 

 with fresh meat or liver as a means of preventing rabbit injury. 



Many other remedies have 

 been suggested and used for 

 protection against rabbits. 

 Some of these recipes are 

 complicated, most of them 

 frequently containing highly- 

 scented drugs. 



Commercial lime sulphur, 

 full strength, painted on the 

 trunks of trees twice during 

 the winter has proved effec- 

 tive in some cases. Sulfo- 

 cide has also been used effec- 

 tively. 



Remedies for injured trees ; 

 grafting. After a tree has 

 been injured the remedy to be 

 !|j8HIi applied will depend upon the 

 extent and height of the dam- 

 age. 



If the injury is beneath the 



Wound 2 years after bridge grafting gr()und ^ ^ ^ CQm _ 



pletely girdled it is better, in most cases, to remove the tree and 

 replant. If the injury is high enough above the ground to permit 

 bridge grafting, trees completely girdled may be saved if the work 

 is done before growth starts and the wound is covered with grafting 

 wax or some substance to prevent evaporation of moisture. 



If the injury is 18 to 24 inches above the ground and the tree 

 is not over 2 or 3 inches in diameter the tree can be sawed off below 

 the wound and a scion inserted in the top of the stub, using the cleft 

 graft. 



Bridge grafting is done by inserting one end of a scion a few 

 inches below the wound and the other end a few inches above the 



