^i8 



INDEX 



PAGE 



Ripening wheat, influence on 



composition 104 



Rolling wheat 92 



Root crops 8 



Roots of wheat 27 



Rotation, barley 329 



buckwheat 405 



maize 209 



oats 294 



rice 361 



rye 348 



sorghum 38!* 



wheat 74 



Rumex 400 



Rust 96 



Rye 345 



a soiling crop 352 



as green manure 348 



by-products 352 



center of production 354 



climate 347 



commercial grades 354 



composition 346 



crop of the U. S.. 353 



crop of the world 353 



cultural methods 349 



enemies 349 



giant 54 



harvesting 3SO 



history 354 



influence of specific grav- 

 ity upon germination, 



practicum 355 



Jerusalem 54 



plant 345 



practicums 355 



relationships 345 



rotation 348 



soil 347 



study of plant, practicum 355 



use 351 



varieties 347 



yield per acre 354 



Scab, wheat 97 



Scleria 369 



Scotch barley 326 



Secale cereale 345 



fragile 345 



montanum 345 



Seed bed, oats 296 



change of 20 



improved 14 



improved, significance of. 14 

 improved, selection, barley 334 



maize, vitality i97 



oats, treatment 3°! 



selection, oats 299 



selection, oats, influence.. 298 



wheat, quantity 85 



wheat, size 87 



wheat, treatment 89 



Seeding buckwheat 406 



machinery, wheat 90 



Selection of forms 19 



wheat, improvement by. . . 63 



PAGB 

 Senna .. 369 



Sensitive joint vetch 369 



Sesban macrocarpa 369 



Sex, in plants, a cause of de- 

 lay in knowledge of plant 



breeding 16 



Shocking oats 290 



wheat, eff^ect 104 



wheat, method 105 



Siberian oats 290 



Silage 138, 257 



Silk, maize 146 



Silo 257 



Sirup, sorghum 396 



Sisal 9 



Sitopyros 47 



Sitotroga cerealella 102 



Size of seed, influence on early 

 stages of plant growth, 



oats, practicums 316 



Smartweeds 369 



Smut, loose wheat 97 



stinking, wheat 97 



Soft maize 180 



Soil, barley 329 



buckwheat 404 



constituents in wheat, ac- 

 cumulation 70 



effect of change on wheat 72 

 fertility, relation to bar- 

 ley, practicum 343 



fertility, relation to oats, 



practicum 315 



influence on composition of 



wheat grain 44 



influence on maize 208 



influence on oats 294 



influence on rice 361 



influence on rye 347 



influence on sorghum .... 388 



wheat, choice of 71 



Sorghum, climate 387 



collateral reading 399 



composition 384 



crop of the U. S 397 



crop of the world 397 



cultivation 391 



cultural methods 389 



germination 387 



grain 384 



harvesting, method 392 



harvesting, time 392 



history 398 



inflorescence 383 



method of planting 391 



name 382 



plant 383 



quantity of seed 390 



rate of planting 389 



relationships 382 



rotation 388 



saccharatum 382 



seed bed, preparation 389 



sirup 396 



soil 388 



