UNITED STATES DEPARTMENT OF AGRICULTURE 

 BULLETIN No. 274 



Contribution from the Bureau of Plant Industry 

 WM. A. TAYLOR, Chief 



Washington, D. C. 



July 8, 1915. 



FACTORS GOVERNING THE SUCCESSFUL 



SHIPMENT OF RED RASPBERRIES 



FROM THE PUYALLUP VALLEY 



By 



H. J. RAMSEY, Pomologist in Charge of Fruit-Handling and 



Storage Investigations, Office of Horticultural and 



Pomological Investigations 



CONTENTS 



Introduction 1 



The Berry Industry of the Puyailup Valley 2 



Methods of Growing Red Raspberries . S 



Handling and Shipping Red Raspberries 10 



Causes of Decay of Fruit in Transit . . 16 



Frequency of Picking 19 



Relation of Rainfall to Handling ... 19 

 Relation of Methods of Growing to Keep- 

 ing Quality 19 



The Labor Problem 20 



Handling, an Economic Problem ... 20 



Careful-Handling Experiments .... 20 

 Effect of Delay in Cooling on Keeping 



Quality 26 



Precooling Experiments 27 



Decay in Top and Bottom Crates ... 32 

 Temperature Conditions in an Iced Re- 

 frigerator Car 33 



The Application of Precooling .... 34 



Summary 35 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 



IMS 



