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CONTENTS 



Page 



Preface ii 



Introduction 1 



History and origin 1 



Geographic distribution 2 



Botany 3 



Ethnobotany 3 



Classification 4 



Morphology 4 



. Cytology 9 



Varieties 10 



Culture 15 



Environmental requirements 15 



Land preparation and planting 18 



Fertilization 20 



Staking 21 



Pests and diseases 21 



Harvesting 27 



Culinary characteristics 28 



Cooking and processing 29 



Composition 30 



Storage 35 



Potential uses 36 



Literature cited 38 



Washington, D.C. Issued June 1976 



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