Grown from “sets” 103 How planted 104 Tillage 104 Yield 104 CHAPTER XIV.—TUBER CROPS 106-110 Potatoes 106 Early potatoes 108 Enemies and diseases 108 How to plant 107 Seed, potato 107 Soils, best 106 Spraying 108 Yield, average 106 “ good 106 “ phenomenal 218-225 “ possible 106 Sweet Potatoes 109 Home of 109 Climate 109 Cultivation 109, 110 Enemies 110 Soil 109