Cassava Yams 12 Sweet potato 11 Edible aroids 10 Field Crops, (New March 2000) 4 Manihot esculenta 4 Plant Breeding and Genetics 4 Plant Production 3 Plant breeding 3 Biological Resources (Plant) 2 Crop Produce 2 Food Composition and Quality 2 Maize 2 Millets 2 Pearl millet 2 Pennisetum glaucum 2 Plant Pests, (New March 2000) 2 Plant Physiology and Biochemistry 2 Plant diseases 2 Plant genetic resources 2 Plant physiology 2 Potatoes 2 Processing 2 Solanum tuberosum 2 Taxonomy 2 Viral, Bacterial and Fungal Diseases of Plants, (New March 2000) 2 Zea mays 2 Agricultural Economics 1 Agricultural productivity 1 Agriculture 1