506 



INDEX 



Smut of oats, 160, 170 



formalin treatment for, 1(51 

 wheat, 137 

 Soft corn, 47 

 Soils, for buckwheat, 200 

 corn, 55 

 cotton, 220 

 oats, 158 

 potatoes, 267 

 productiveness, 31 

 rye, 192 



sweet potatoes, 291 

 tobacco, 461 

 wheat, 123 

 Sorghums, broom corn, 248 



culture, 254 

 classification, 245 

 climate for, 248 

 culture, 251 

 durra, 247 



drought resistance, 250 

 for forage, 253 

 for syrup, 253 

 kafir corn, 246 

 production, 244 

 yield of grain, 252 

 Soudan grass, 366 

 Soy beans, 376, 424 

 Spelt wheat group, 116 

 Spikelet, structure of, 24 

 Spraying potatoes, 281 



for weeds, 166 

 Spring and winter barleys, 180 



oats, 148 



Starch, identification of, 11 

 Storing potatoes, 278 



sweet potatoes, 297 

 Straw, market grades, 485 

 Sweet clover, 376, 410 

 Sweet corn, 47, 93 

 Sweet potatoes, climate for, 291 

 culture of, 293 

 diseases and insects, 299 

 harvesting, 296 

 market types, 289 

 manure and fertilizer for, 



292 



propagation of plants, 293 

 storing, 297 

 types and varieties, 288 



Tall meadow oat-grass, 360 

 Tangier pea, 438 

 Temporary pastures, 319 

 Tillering of oats, 150 



Tillers, 22 



study of, 30 

 Timothy, advantages of, ;$44 



fertilizer for, 346 



market grades, 484 

 Tobacco, 458 



breeding, 464 



care of the crop, 469 



composition of, 459 



culture, 455 



curing, 472 



fertilizers for, 402 



fungous diseases, 479 



harvesting, 472 



insects, 477 



marketing, 475 



production, 458 



rotations, 470 



soils for, 461 



stripping, sorting, etc., 474 



types and varieties, 459 



yield and prices, 476 



Varieties of barley, 181 



corn, 58 



cotton, 207 



pop-corn 93 



potatoes, 262" 



sweet corn, 94 



sweet potatoes, 288 



wheat, 117 



Velvet beans, 376, 418 

 Vetches, 376, 433 



bitter, 438 



common, 433 



hairy, 435 

 . Narbonne, 437 



purple, 438 

 Vitality of seeds, 13 



Water, conservation of, 76 



determination of, 11 



evaporation of, 8 



in grain, 28 



loss from soil, 75 



requirements of cereals, 250 



requirements of oats, 157 

 Weeds, spraying for, 166 

 Wheat, as a bread crop, 108 



broadcast vs. drilling, 127 



classification, 109 



cost of producing, 133 



diseases and insect enemies, 137 



durum, 114 



fertilizers for, 125 



