Issued, July 8, 1915. 
Revised, July 7, 1924. 
Washington, D. C. 
FACTORS GOVERNING THE SUCCESSFUL SHIP- 
MENT OF RED RASPBERRIES FROM 
THE PUYALLUP VALLEY.’ 
By H. J. RAMsrEy, Pomologist in Charge of Fruit-Handling and Storage Investi- 
gations, Office of Horticultural and Pomological Investigations, Bureau of 
Plant Industry. 
CONTENTS. 
Page. Page 
LintEROGUGELOM SS SSeS es i || Bbloves IAbyone joreololeyen 18 
The berry industry of the Puyallup Handling, an economic problem___~_— 18 
WADI Cy ies Cee ne caus mee SS ee PS 2 | Careful-handling experiments______ 18 
Methods of growing red raspberries_ 4 Effect of delay in cooling on keep- 
Handling and shipping red raspber- TNC Cyan ee ee ee 23 
Tal amet eogincNeer eye a th ire nod oe Sil 8 | Precooling experiments es Acai AT poly Seine 24 
Causes of decay of fruit in transit__ 13 | Decay in top and bottom crates____ 28 
HTequency, Of picking = 22292 = 16 | Temperature conditions in an iced 
Relation of rainfall to handling ___ 17 SHSVA ORONO ROIE GRE sae ee 29 
Relation of methods of growing to The application of precooling______ 30 
Keepin ou quality e225 Ses Baa CS Sum apye ee ae ee 31 
> 
INTRODUCTION. 
Berry growing is the leading horticultural industry in the Puyal- 
lup Valley, Wash., and is ‘apidly increasing in importance in other 
sections of that State and in Oregon and California. The growth 
of this industry, as well as the prosperity of the community, in the 
Puyallup Valley especially, is dependent largely on the extension 
and broadening of the marketing zone for fresh berries. The carry- 
ing and keeping qualities of the berries preduced and offered for 
shipment determine the territory and markets that can be profitably 
reached. Under the ordinary and usual methods of handling and 
refrigeration 2,000 miles has been the limit of successful shipment 
for red raspberries, and oftentimes considerable deterioration and 
decay occurred at this or lesser distances. 
The markets for fresh berries could not profitably be extended 
without better keeping or carrying qualities. Many leading growers 
have felt that possibly changes in methods of handling and refri ig- 
1B. B. Pratt and A. W. McKay, formerly Pomologists in Fruit-Handling and Storage 
Investigations; S. J. Dennis, Refrigeration Technologist; G. H. Crawford, formerly As- 
sistant Refrigeration Technologist ; “and G. W. Dewey and J. F. Fernald, of the Oflice of 
Horticultural and Pomological “Investigations, were actively associated in the prosecution 
of these investigations. 
83578°—24——] 
