336 
Fertility : 
determination of soil, 76. 
roaintenance of, 75. 
of soil, elements of, 69. 
requirements of beets, 74. 
Fertilizer : 
commercial, for beets, 77-81. 
home-mixing of, 82. 
indirect, 81. 
Flea-beetles, 193. 
Flower and seed of sugar-beets, 34. 
Food, value of sugar as, 279-283. 
Frederick the Great fostered beet- 
sugar industry, 11. 
Frederick William III aided first 
beet factory, 11. 
Freezing: 
and heating of siloed beets, 157. 
effect on quality of beets, 211. 
-in of beets, 149. 
French encouragement to _ beet- 
sugar industry, 11-13. 
Frost : 
danger during harvest, 149. 
effect on growing beets, 39. 
Fruits: 
as source of sweet, 7. 
sugar in, 278. 
German encouragement to beet- 
sugar industry, 13, 15. 
Germination power of seed, im- 
portance of, 214, 218. 
Grasshoppers, 193. 
Green-manures, use of, 85. 
Growth: 
habit of sugar-beets, 23. 
of beet-sugar industry, 8. 
of beet plant, 26-29. 
of industry, factors affecting, 2. 
Guadeloupe, sugar-cane in, 8. 
Gypsum as a fertilizer, 81. 
Hail, effect on beet growing, 42. 
Harvesting : 
and threshing beet seed, 227. 
beets, time of, 148-150. 
Index 
Harvesting: — Continued 
implements, 151~154. 
processes of, 151. 
Hauling beets, 155. 
Hay from sugar-beet tops, 162. 
Heart-rot of beets (Phoma betae 
Frank), 200. 
Heating and freezing of siloed 
beets, 157. 
Heat in the soil, 63. 
Heterodera schachtii Schmidt, 195. 
Hoeing sugar-beets, importance 
of, 122, 
Holding water off to bring maturity, 
150. 
Home-mixing of fertilizer, 82. 
Honey formerly chief source of 
sweet, 7. 
Horses, feeding beet by-products 
to, 168, 175, 180. 
Humus in the soil, 64. 
Implements for: ”* ~” 
harvesting beets, 151-154. 
preparing beet seed-bed, 110. 
Importation of beet seed, 216, 
217. 
Increase of sugar in beets, 6. 
India, as source of sugar, 7. 
Indirect fertilizers, 81. 
Injury to beets by insect pests, 
184. 
Insecticides, 186. 
Insect pests of beets, 184-198. 
Iron sulfate as a fertilizer, 81. 
Irrigation : 
amount to give beets, 131-133. 
before plowing, benefits, 110. 
effect on beet, 137-144. 
methods of, 130. 
of beets, 126-144. 
preparation of land for, 129. 
size of each application, 136. 
time to apply to beets, 133-136. 
water: 
sources of, 127. 
terms used with, 129, 
