INDEX 



345 



Mass selection, 88. 

 results with, 89. 

 Meal, corn, 249. 

 Mendel's laws, 104. 

 Milo, 311. 



Mineral matter for corn soils, 135-150. 

 Moisture in corn, 175. 



Natural selection, 83. 

 Nitrogen for corn, 134, 146. 

 Non-saccharine sorghums, 301. 



classification of, 291. 



region cultivated, 303. 



statistics, 304. 



Orange sorghum, 298. 



Organic matter of corn soils, 130. 



Origin of corn 



biological, 16. 



geographical, 15. 

 Origin of sorghum, 279. 



geographical, 280. 



Pasture (sorghum), 325. 

 Pedigree selection of corn, 89. 

 Physiology of corn, 38. 

 Physiology of sorghum, 286. 

 Plant, corn 



description of, 26-37. 



numjjer to the acre, 176. 



type of, 86. 

 Planter's corn 



calibrating planter plates, 195. 



two-row check, 172. 



lister, 168. 

 Planting corn, 161. 



checking and drilling, 172. 



depth of, 175. 



rate of, 176. 



on various soils, 180. 

 time of, 173. 

 width of rows, 182. 

 Plowing for corn, 163. 

 Pod corn, 20. 

 Poisoning, sorghum, 327. 

 Poison, for squirrels, 215. 

 Pop corn, 21. 



products, 251. 

 Preparation of land for corn, 161. 



Products, corn, 249-251. 

 Production, broom corn, 331. 

 Production of corn 



as related to climate and soils, 

 54-73. 



causes of low, 70. 



continents, 2. 



countries, 2. 



development, 7. 



how maintained, 134. 



percentage, 3. 



restoring, 123. 



United States, 6. 



world's crops, 1-2. 

 Production of non-saccharine sor- 

 ghums, 304. 

 Production of sorghum sirup, 295. 



Rate of planting corn, 176. 



on different soUs, 180. 

 Recessive characters, 105. 

 Relation of climatic- factors to growth, 

 58. 



of cropping systems to yield, 122. 



of July rainfall to yield, 66. 



of soils to growth, 68. 

 Relationship, degrees of, 101. 

 Relative importance of corn, 1. 

 Root louse, 217. 

 Roots of corn, 26-30. 



depth, 176. 



prevent evaporation, 208. 



spread of, 28. 

 Roots of sorghum, 285. 



in upper layers, 290. 

 Rootworm, 217. 

 Rotations for corn, 127. 

 Runoff water, 151. 



Saccharine sorghums, 293-300. 



classification, 296. 



introduction, 293. 



sirup, first grown for, 294. 

 gallons produced, 295. 



sirup-making, 328^330. 

 Seed corn 



curing sweet corn, 264. 



germination tests, 192. 



grading, 195. 



