1 
UNITED STATES DEPARTMENT OF AGRICULTURE 
DEPARTMENT BULLETIN No. 1477 
Washington, D.C T October, 1927 
VARIETAL CHARACTERISTICS OF PLUMS 
IN THE PACIFIC STATES IN 
RELATION TO PRUNING 
C. F. KINMAN, Associate PomologisL Office of Horticulture 
Bureau of Plant Industry 
CONTENTS 
Page 
ance of Pruning Operations 1 
Explanations of Terms Used 4 
Growing Habits of Plum Trees in Relation to Pruning 4 
Fruiting Habits in Relation to Growth 9 
Habits of Growth of Fruit Spurs 9 
Effect of Low Summer Temperatures on Wood Growth 13 
Habits of Growth and Production of Some Plum Varieties Grown in the Pacific States . 14 
Comparison of Behavior of Plums under Eastern and Western Conditions 36 
UNITED STATES 
GOVERNMENT PRINTING OFFICE 
WASHINGTON 
1927 
