Subject: The Sweet Potato
3. The sweet potato-today and tomorrow
7. Recent progress and current needs of the sweet potato industry in the United States
10. Some general and regional problems of sweet potato (Ipomoea batatas (L.) Lam) growing
13. Study of the effect of nitrogen, phosphorus and potassium on sweet potato yield by response surface
16. The sweet potato as a world food crop and how research has improved its nutritional quality
19. Sweet potato and its breeding efficacy in Japan
22. Growth and development of tuberous root in sweet potato
24. The process of tuberization in sweet potato (Ipomoea batatas (L.) Lam).
27. Winter nurseries for production of early sweet potatoes
32. Some cultivation techniques affecting yield response in the sweet potato
37. The effect of temperature on the translocation and accumulation of carbohydrates in sweet potato
41. The effect of sulfuric acid scarification on potato seed germination
42. The use of carbohydrate contents as an index of sweet potato maturity
44. Mechanical harvesting of sweet potatoes
45. Various methods of harvesting sweet potatoes
48. Evaluation of hand and mechanical harvest of sweet potatoes