GRAFTING 111 



when the plane is used lightly and rapidly no injury 

 to the bark or the scion is to be feared. 



The planed scion graft is adaptable for a bark slot 

 graft and better yet for a splice graft. In the latter 

 case the stock scarf is planed as well as that of the 

 scion. Notwithstanding the need for extra care in 

 bracing the shoot from a splice graft I find myself 

 employing this graft more and more to the exclusion 

 of the cleft graft, for small scions as well as for large 

 ones. Large planed scions may be nailed in place. 



Bud grafting differs from scion grafting in tech- 

 nique rather than in principles. When a bud stick 

 has such large diameter that we cannot readily di- 

 vide it up into scions a number of bud grafts may 

 be obtained from it. These buds may be inserted 

 into a stock by means of the old-fashioned T cut 

 (Figs. 27 and 28) if we are dealing with thin barked 

 species like the hazels. Thick barked species require 

 a different treatment because the corky layer stands 

 as a mechanical obstacle between cambium layers 

 of graft and stock. (Figs. 24 and 26.) Paring down 

 the edges of this corky layer requires too much 

 time and nicety of work for practical purposes. 

 Details of bud grafting are described at length in 

 the textbooks on the subject. They cover the 

 ground of nut tree grafting as well as that of ordi- 

 nary fruit tree grafting so far as mechanical detail 

 is concerned and I shall add in these notes only a 

 few points which belong to our newer information. 

 Mr. J. F. Jones has advanced our knowledge of the 

 subject by a method which is best described in a 



