RATIONAL FRUIT CULTURE 



89 



Obviously, there is a gap in the middle where the chisel was, 

 and this is the disadvantage of cleft-grafting. It may be filled 

 in time by the callus which forms at the two junctions, but 

 very often it does not fill completely. 



Fig. 34 Cleft Grafting. 



GRAFTING WAX. 



Whatever method of, grafting be adopted, the air must 

 be excluded. Unless this is done, the sap exuding from the 

 wounded cambium layers merely dries on the surface, instead 

 of forming a connective layer between them. Grafting wax, 



