: UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 974 
-Contribution from the Bureau‘of Pfant Industry 
WM. A. TAYLOR, Chief 
Washington, D. C. PROFESSIONAL PAPER October 15, 1921 
DIRECTIONS FOR BLUEBERRY 
CULTURE, 1921 
By 
FREDERICK V. COVILLE, Botanist 
CONTENTS 
‘ 
Early Experiments with Blueberries. . . Propagation—(Continued) 
Special Requirements Root Cuttings 
Importance of Superior Varieties . .‘. . Mound Layering ‘ 
Propagation at ~ Treatment of Young Plants 
i Field Planting 
Soil Mixtures for Blueberries... . Hybrid Blueberries 
Tubering Conclusion 
Winter Cuttings . 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
ic 1921 
