242 



UNIVERSITY OF CALIFORNIA EXPERIMENT STATION. 



Top-Working by Budding. Trees may sometimes be top-worked to 

 advantage by budding rather than grafting, working on smooth-barked 

 limbs not much over one inch in diameter or on suckers coming from 

 large limbs cut off the previous year. The methods already described 

 as to cutting the tops, treatment of the stubs and methods of budding 



Fig. 42. Top-grafting; two years' growth on orchard-planted 

 black walnut. Dr. W. W. Fitzgerald. 



will apply. Fig. 33 shows the partial ring bud after forming a union 

 and the same with considerable growth developed, the bud-sprout being 

 tied up to the partially cut off limb. The ring of bark on these buds 

 extends a little further around the limb than is desirable. 



