344 



INDEX 



Clovers {continued). 



effect of drouths, 257. 



effect of friendly bacteria, 255. 



effect of lack of humus, 255. 



effect of lack of phosphorus, 254. 



effect of nurse crop, 256. 



hard seeds of, 264. 



methods of seeding, 261. 



how to succeed with, 258. 



why sown with grasses, 236. 

 Cold frame, how made, 315. 

 Color of soil, effect on temperature, 



34. 

 Corm defined, 229. 

 Corn, acreage in United States, 149. 



Belt, how pushed northward, 54. 



climatic requirements of, 152. 



cultivation of, 191. 



depth of cultivation, 193. 



desirable characters of ear, 157. 



desirable characters of kernel, 162. 



desirable characters of stalk, 53. 



desirable butt described, 160. 



desirable shape of ear, 159. 



desirable size of ear, 158. 



desirable size of kernels, 163. 



desirable shape of kernels, 163. 



desirable tip described, 161. 



detasseling of, 116. 



distribution of, 150. 



effect of climate on type, 151. 



seed, how dried, 172. 



seed, how graded, 179. 



seed, how stored, 173. 



seed, how tested, 174. 



seed, selection in field, 169. 



frequency of cultivation, 195. 



harvesting of, 196. 



ideal seed bed for, 181. 



immaturity in, how recognized, 

 155. 



listed, cultivation of, 200. 



moisture requirements, 152. 



planting, depth of, 188. 



planting, distance between rows, 

 189. 



planting, methods of, 185. 



planting, number kernels in hill, 

 189. 



planting, time of, 187. 



seed bed in cornstalk ground, 184. 



seed bed in sod ground, 182. 



seed bed in stubble ground, 185. 



replanting, 190. 



sensitiveness to climatic changes, 

 152. 



soil requirements of, 154. 



substitute crops for, 198. 



sweet, how grown, 324. 



unsoundness in, how recognized, 

 155. 



uses of, 149. 



why barren stalks are avoided, 55. 



why stalks with suckers are 

 avoided, 55. 

 Corolla defined, 108. 

 Cotton, how ginned, 280. 



how harvested, 280. 



importance of, 275. 



methods of culture, 277. 



plant described, 276. 



range of, 275. 

 Cottonseed meal, 282. 

 Cotyledon defined, 62. 



effect of removing, 74. 

 Cowpeas, methods of culture, 271. 



range of, 245. 

 Cross-fertilization by hand, 113. 

 Cross-fertilization defined, 113. 

 Cucumbers, how grown, 327. 

 Cultivation of corn, depth of, 193. 

 Cultivation of com, frequency of, 



195. 

 Cultivation of listed corn, 200. 

 Cuttings, 138. 



Decay, cause of, 126. 

 Dicotyledon defined, 62. 

 Dicotyledons, flowers of, 108. 



roots of, 84. 



seeds of, 63. 

 Diseases, cause of, 126. 



how prevented, 128. 

 Drouths, effects on clovers, 257. 

 Drying seed corn, 172. 

 Dura, 198. 



Earthworms, work done by, 9. 

 Elements, essential, 10. 

 Embryo, 62. 



enemies of, 46. 

 I how protected, 46. 



