570 



INDEX 



Cotton (continued) 



species, laboratory exercises, 281. 



species, literature, 281. 



stalk cutter, .399. 



stalks, loss in burning, 406. 



statistics, laboratory exercises, 

 387. 



stems and branches, 248. 



stems, plant food ic, 271. 



stems, weight of, 271. 



"storm resistance," 261. 



structure and general character- 

 istics, 248. 



structure, laboratory exercises, 

 26.5. 



structure, literature, 266. 



subsoiling for, 344. 



tillage by weeder and harrow, 350. 



time of planting, 347. 



time of plowing for, 342. 



tinges and stains, 374. 



Toole variety, 296, 297. 



Triumph variety, 298. 



Truitt variety, 298. 



twist in fibers, 262. 



upland species, 276. 



variation and selection, 303. 



varieties, 282. 



varieties, lal:)oratory exercises, 

 299. 



varieties, literature, 299. 



vegetative branches, 249, 250. 



wdiere potash is needed, 318. 



wilt, description of, 412. 



wilt, persistence of, 413. 



wilt-resistant varieties, 414. 



wilt, spread of, 412. 



wilt, treatment of, 413. 



young plants of, 353. 

 Cowpeas, in corn, 181. 



drilling uersus broadcast sowing, 

 181. 



fertilizer for, 184. 



methods of drilling, 184. 



methods of sowing broadcast, 

 183. 



Cross-breeding, effects of, in corn, 

 141. 

 in corn, 140. 

 "Crossed corn." Sec page 180. 

 Crossing ver^sus selection in cotton, 



301. 

 Crossley, B. W., 205, 216. 

 Current cross, 127. 

 Cutworms, 207. 

 Cylas formicarius, 4.52. 



Davenport, E., 149. 



Davidson, R. J., 547. 



D -wey, L. H., 281, 424. 



Viahrotica 12~punciata, 206. 



Diatrea saccharalis, 520. 



Dioscorea, 431. 



Diplodia, 215. 



Diplosis sorghicola, 233. 



Disk-harrow, 16. 



for forming beds, 347. 



Dodlinger, P. T., 67. 



Dodson, W. R., 157, 230, 247. 



Dolochonyx oryzivoriis, 229. 



Dominance of qualities in hy- 

 brids, 143. 



Double fertilization, 90. 

 in corn, 142. 



Drake, Z. J., yield of corn, 204. 



Drilling vcr.^}is broadcast sowing of 

 wheat, .54. 



Duggar, B. M., 456. 



Duggar, .1. F., 31, 126, 157, ISS, 

 205, 299, 340, 360, 455. 



Earle, D. E., 376. 

 Earle, F. S., 521. 



Ear-to-row system of corn breed- 

 ing, 133. 

 East, E. JM., 143, 149. 

 Einkorn, 40. 

 Elliott, E. E., 67. 

 Embr\'o-sac, 90. 

 Emnier, 40. 

 Endosperm, 90. 



