Bui. 1477, U. S. Dept. of Agriculture 
Plate 6 
Growth and Fruiting Habits of the Burbank Plum in 
Relation to Pruning and to Soil and Other Condi- 
tions. — I 
A.— Old Burbank plum grafts, topworked on apricot, after a severe annual 
pruning. Almost the entire crop of fruit is borne on twigs 1 and 2 years 
old. The tree is growing in deep unirrigated soil where severe pruning 
is often necessary to insure large fruit. (Vacaville, Calif, February, 1923) 
B. — The same tree shown in A, the following summer. The new growth is 
very vigorous, but too compact for the growth of spurs in the interior of 
the tree. (Vacaville, Calif., June, 1923) 
