CONTENTS 
Page 
Introduction... 2-22. 262) «2 552 1 
WonchoOCarpUsS= se = = == ee 5 
Botanyasss—22 == ‘ee eee ee eee eee Be ee A ee ee ne 5 
Sources of Commercial: Suppl ies 2 mee eee eee ee 8 
Cultivation practices:_-_ 2.32.24 S228 ee ee 9 
Field: preparation... 22. 2.222525 2 ee ee ee “Ss 
Propagating material and fieldspacing == ae. se eee 10 
Interplanting= 22-2 52426552 ee eee 10 
Weeding 2.2... 2 Sen bse ee ee 11 
Harvest and preparation for market ee ee 12 
Selection of superior-quality strains2 > © 5S a 14 
Dérriss 2. 2. ose 5 et eee ee ea 16 
Various cultural practices. S25 yeaa a meee ee ee 16 
Cultivation in’ Puerto Rico... 2 22. 3 20 eee 19 
Nursery 222. 2 bee ee ee 19 
Transplanting... 2222066 22 2 ae 19 
Weeding and ‘trellisings @ = 20) 80 93 20 
Mulehing 5-2. & Ses a 8 Se 26 
Harvest methods and yields ‘of roots) an a Py 
Desion of a mechanical harvester] 22225 ae Se 22 
Selectionof Superior varieties. =o. = 2 2a ea 23 
Poy re ta rt a 24 
Botany oc. 2oe 35 oe ee oe 27 
Cultural practices). 2202 45 22 3 oe ee A 27 
Nurseries_o.2 (32.05.6055 Se 32 22 eS I ae 28 
Field: planting 12% «200 222 Ss a 29 
Harvests 2. £6 2. 22 oe 30 
Production in the Western Hemispheres] 522s ee ee 317 
Brazil ee ye as ag a 31 
Argentina. 2 222020225 5. oe 32 
Chiles os ge et a a a Eee 32 
Pere ooo eat ek Roe oe i ae a ne 33 
Bieuador. 2. 6. fd 2 ee Se a 34 
Central Ameri¢a.<o0) 0 32 eee 34 
Flattio ooo ek te oe 34 
hiteratune icitéd 1.4 eaeee, Til) cals ee 2 a 35 
Si) 
Appreciation is expressed for critical advice and for loans of certain — 
photographs by staff members of the Bureau of Plant Industry, Soils || 
and Agricultural Engineering, Bureau of Entomology and Plant — 
Quarantine, and the Office of Foreign Agricultural Relations. | 
This contribution was made possible by funds provided through the ~ 
United States Interdepartmental Committee on Scientific and Cul- 
tural Cooperation. 
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