Bui. 1477, U. S. Dept. of Agriculture 
Plate 10 
Growth, Spurs, and Fruiting Habits of the Gaviota 
Plum in Relation to Pruning and to Soil and 
Other Conditions 
A.— A thrifty tree which has been moderately headed back and thinned 
out each winter. There is a thrifty growth of foliage, spurs, and 
twigs, but only a few large new shoots. The tree under this 
treatment is inclined to remain open. The soil is fertile and 
irrigated. (Compare with pi. 2, C. Newcastle, Calif., July 3, 
1919) 
B. — Branch of a 9-year-old tree which has not been headed back but has 
been lightly thinned each year. Note the persistence of old spurs 
and that few of them have grown to twigs. (Compare with D. 
The trees in the two figures are growing in the same type of soil 
in the same locality, and both are under irrigation) 
C. — Spurs from vigorous irrigated trees which have been moderately 
thinned out and headed back each year 
D. — Twigs growing from spurs along framework branches of a tree 
which has been headed back and thinned to admit light each year. 
The vigorous growth shown is due to the fertile soil, irrigation, 
and pruning 
E. — Branch of a tree which has been moderately headed back and the 
branches thinned out each year, showing production on old spurs 
