614 



FIELD CROPS 



and fertilizers, 172; marketing, 182; 

 nurse crop, 187; origin and history, 

 163; preparing the land, 173; pre- 

 paring seed, 175; prices, 183; produc- 

 tion, 168; rate of seeding, 176; rota- 

 tion, 186; score card, 194; seeding 

 implements, 177; stocking, 179; soil, 

 171; sowing with other grains, 188; 

 stacking, 180; storing, 182; straw, 

 190; threshing, 181; time for sowing, 

 175; uses, 188; varieties, 167. 



Orange hawkweed, 508. 



Orchard grass. 



Description, 303; importance, 303; 

 origin, 303; seeding, 304; utilization, 

 305. 



Ox-eye daisy, 495, 508. 



Pastures. 



Essentials, 281; formation, 281; im- 

 portance, 281; improving, 283; man- 

 agement, 283; plants, 282; renovat- 

 ing, 284. 



Peanut. 



Characters, 376; cultivation, 377; 

 harvesting, 378; importance, 377; 

 uses, 379. 



Pearl millet, 325. 



Pepper grass, 506. 



Perennial rye grass, 291. 



Perennial weeds, 495. 



Phosphorus, 34, 37, 38. 



Plantain, 495, 508. 



Plant food. 



Elements, 34; sources, 36, 93. 



Planting seeds, 25. 



Pop corn, 50. 



Potash, 37, 38 



Potassium, 35. 



Potatoes. 



Acre yield, 403; blight, 415; breeding, 

 419; brown rot, 417; characters, 400; 

 cost of production, 413; crossing, 

 418; cultivation, 409; cutting seed, 

 407; diseases, 415; exports and im- 

 ports, 414; growing, 404; harvesting, 

 410; importance, 401; improvement, 

 418; insects, 417; irrigation, 410; 

 marketing, 412; origin and history, 

 399; picking, 411; planting, 408; pre- 

 paring the land, 404; preparing seed, 

 407; prices, 413; production, 402 

 rotation, 414; scab, 416; seed, 405 

 soils and fertilizers, 403; sorting, 411 

 storing, 411; varieties, 401. 



Quack grass, 495, 497, 500. 505, 508 



Rag-doll tester, 65. 



Ragweed, 454, 505, 509. 



Rape, 396. 



Red clover. 



Description, 333; enemies, 345; im- 

 portance, 335; inoculation, 340; mak- 

 ing hay, 341; nurse crop, 339; origin, 

 333; pasturing, 343; rotation, 345: 

 seed to use, 337; soils, 336; sowing, 

 338; treatment, 340; value, 343. 



Redtop. 



Description, 301; importance, 302; 

 origin, 301; seeding, 303; soils, 303; 

 related plants, 302. 



Reproduction, 40. 



Rescue grass, 310. 



Respiration, 28. 



Rice. 



Botanical characters, 237; conditions 

 for production, 239; growing, 240; 

 importance, 238; origin and history, 

 237; uses, 240; varieties, 238. 



Roots 17, defined, 29; growth, 30. 



Root crops, 17, 389. 



Root hairs, 31. 



Rotation of crops. 



Advantages, 426; classe.'* of crops, 482; 

 crops to grow, 486; definition, 475; 

 essentials, 483; length of rotation, 

 488; origin, 475; suggestive rotations. 

 488; when to fertilize, 487. 



Russian thistle, 500, 506, 508. 



Rust, 155, 496. 



Rutabagas, 394. 



Rye. 



Description, 217; diseases, 223; grow- 

 ing, 220; importance, 217; production, 

 218; straw, 223; uses, 221. 



Rye grass, 313. 



Scab, 155, 417. 



Score cards. 



Barley, 215; corn, 120; oats, 194; 

 wheat, 161. 



Sedatives, 19. 



Seed. 



Definition, 23; production of, 40. 



Sheep sorrel, 508. 



Shepherd's purse, 454. 



Silage, 86, 253. 



Silicon, 35. 



Sirup. 



Corn, lOS; sorghum, 319. 



Sisal, 459. 



Smartweed, 506. 



Smut. 



Barley. 212; corn, 109; oats, 193; 

 ■wheat, 156. 



Squirreltail, 508. 



Sodium, 35. 



Sorghums, grain. 



Botanical description, 241; import- 

 ance, 243; growing, 244; origin and 

 history, 241; types, 243; value, 245. 



