294 



INDEX 



Seeds, treatment, 177. 



viability of, 16, 17, 100. 

 Seed-testing, 23. 

 Selection, of crossed seedlings, 273. 



of seeds, 268. 



principle of, 9, 266. 



to fixed type, 267. 

 Self-boiled lime sulfur, 182. 

 Sepal, 88. 



Shading of plants, 137, 245. 

 Shifting, 242. 



Side-grafting, 223, (lab.), 284. 

 Size of seeds, 29. 

 Slenderness, pruning for, 254. 

 Sling psychrometer, 122. 

 Slips, 209. 



Snow, value of, 148. 

 Soil, adapting varieties to by graft- 

 ing, 215. 



aeration, 63, 147. 



changes in, 61. 



compacting, 21. 



contact with roots in replanting, 

 239. 



for potting, 243. 



ideal, 61. 



penetration by root tip, 63. 



sterilization, 176, 177. 



treatment, 176. 



ventilation, 62. 

 Spatula, 228. 

 Species, 10. 

 Sphagnum moss, 203. 

 Spikelet, 91. 

 Splitting of wood, 116. 

 Spores, 31. 

 Sprayers, 164. 

 Spraying, 178. 

 Spray pumps (lab.), 282. 

 Sprays, mixing of, 181, 182. 

 Sprinkling, of plants in sunshine, 



111. 



Sprouting, 249. 

 Stamens, 88. 



Starch, as reserve food, 56. 

 Steam sterilization of soil, 177. 

 Stem, 72. 



increase in diameter of, 47. 



lengthening of, 73. 



living part of woody, 48. 



region of fastest elongation, 74. 



underground, 72, (lab.), 281. 

 Stem-cuttings, 206, (lab.), 283. 

 Sterility, in relation to hybrids, 12. 

 Sterilization of soil, 177. 

 Stigma, 89. 

 Stimulation, by pruning, 251, 257, 



258. 



Stock, 214. 



Stockiness, pruning for, 253. 

 Stock solutions, 181. 

 Stolons, 189. 

 Stomata, 42. 

 Storage, for cuttings, 205. 



of reserve food, 56. 

 Stratification of seeds, 103, (lab.), 



282. 



Strength, pruning for, 255. 

 Structure of plants, 40. 

 Style, 89. 

 Suckering, 249. 

 Suckers, 189. 



propagating woody plants by, 190. 

 Sucking insects, 167, 171. 

 Sulfur, as a fungicide, 182. 

 Sunscald, 111, (lab.), 282. 

 Symmetry, pruning for, 252. 



T-budding, 226. 



Temperature, control of for cut- 

 ings, 198. 



effect on absorbing power of 

 roots, 66. 



fatal to plants, 110. 



for germination, 17, 21. 

 Tenderness, 5. 

 Terminal bud, 83. 



destruction by cold, 115. 

 Thawing, rate affects injury by 



freezing, 113. 

 Thermal belts, 127. 

 Thinning of fruit, 97, 249. 

 Tip-burn, 112. 

 Tobacco, frenching of, 131. 



smoke, 159. 



solutions, 159. 



Tongue-grafting, 219, (lab.), 284. 

 Top working, 220, 223. 



