616 



INDEX 



Sugar-cane, Japanese, 247-249. 



Zwinga, 247. 

 Sulla, 562. 

 Sunflower, 574. 

 Sweet clover, 417-425. 



adaptations, 418. 



advantages and disadvantages, 

 422. 



agricultural history, 419. 



botany, 417. 



description, 417. 



proportion of roots to tops, 421. 



related species, 424-425. 



securing a stand, 419. 



seed, 424. 



seeding, 419. 



seed-production, 423. 



utilization, 421. 



yield, 422. 

 Sweet melilot, 417. 

 Sweet vernal-grass, 229. 



botany, 229. 



culture, 230. 

 Sword bean, 550. 

 Symphytum asperrimum, 580. 



Tall fescue, 210. 



Tall meadow oat-grass, 189. 



Tall-oat grass, 189-195. 



Tangier pea, 482-484. 



Tares, 457. 



temporary pasture crop systems, 



109-111. 



temporary pastures, 109. 

 Teosinte, 303. 

 Texas blue-grass, 166-167. 

 Texas millet, 297. 

 therms, 62. 



Thousand-headed kale, 592. 

 Tick bean, 479. 

 time of seeding, 86. 



alfalfa, 328. 



common vetch, 460. 



cowpeas, 499. 



crimson clover, 430. 



hairy vetch, 460. 



red clover, 369. 



sorghum, 276. 



soybeans, 522,. 



Timothy, 122-153. 



advantage of, 126. 



agricultural history, 123. 



agricultural importance, 124. 



botany, 122. 



breeding of, 149-150. 



chemical analyses, 58-59. 



climatic adaptations, 125. 



comparison of vegetative and 

 seed progeny, 152. 



depth of seeding, 130. 



desirable types of, 151. 



disease resistance, 148. 



diseases affecting, 146. 



feeding value, 144. 



fertilizers, 133. 



heavy vs. light seeds, 129. 



improved strains, 153. 



in rotation, 127. 



insects injurious to, 146. 



irrigation, 134. 



life history, 141. 



life period, 142. 



lime, effect of, 134. 



method of seeding, 130. 



mixtures, 94, 95. 



pasture value, 139. 



pollination, 140. 



proportion of roots to tops, 143. 



rate of seeding, 129. 



regional strains, 143. 



roots, depth of, 142. 



seed, 127. 



seed-bed, 128, 132. 



seed-production, 140. 



soil adaptations, 126. 



soil preparation, 128, 132. 



time to cut, 136. 



variability of, 147. 



weight of seeds, 129. 



yield of hay, 138. 

 topinambur, 595. 

 Trefoil, bird's-foot, 568. 



white, 411. 



yellow, 435. 

 Tricholaena rosea, 258. 

 Trifolium alexandrinum, 434 



elegans, 406. 



fistulosum, 405, 



