CONTENTS xiii. 



How to Kill Perennial Weeds. — 177. How to Prevent 

 the Introduction of Weeds to the Farm. — 178. Means at 

 Man's Disposal for Controlling Weeds.— 179. The Ck)n- 

 trol of Annual Weeds.— 180. The Control of Winter An- 

 nual and Biennial Weeds. — 181. The Control of Perennial 

 Weeds. — 182. Poisonous or Otherwise Injurious Weeds. 



CHAPTER XIII. 



Irrigation Farming in Western Canada 234 



(By W. H. Fairfield, Superintendent, Experimental 

 Farm, Lethbridge, Alberta) — 183. History of Irrigaition 

 in Western Canada. — 184. Methods of Irrigation. — 185. 

 Wild Flooding.— 186. The Furrow System.— 187. The 

 Bedding System.— 188. The "Check" System.- 189. The 

 Border Sysitem. — 190. SutHlrrigation. — 191. Rela^tive 

 Suitability of Various Crops under Irrigation. — 192. Ir- 

 rigating Timothy and Native Grasses. — 193. Alfalfa 

 under Irrigation. — 194. Grain Crops. — 195. Potatoes. — 



196. Other Crops, Including Trees. 



CHAPTER XIV. 



The Causes and Control of Low Yields 247 



197. The Causes of Low Yields.— 198. Poor Seed.— 199. 

 Too Early or Too Late Seeding. — 200. Too Much or Too 

 Little Seed per Acre.— 201. Unsuitable Varieties.— 202. 

 Shattering. — 203. Late Breaking.— 204. Seeding on Break- 

 ing Done the same Season. — 205. Native Perennial 

 Plants in Stubble Fields.— 206. Plowing When the Soil 

 is Too Wet or Too Dry. — 207. Plowing Under Heavy 

 Stubble or Coarse Manure.— 208. Too Late Plowing of 

 the Fallow.— 209. Weeds.— 210. Insects.— 211. Plant 

 Diseases.— 212. Heavy Spring Frosts. — 213. Hail Storms. 

 —214. Hot Winds.— 215. Dry Seasons.— 216. Fall Frosts. 



CHAPTER XV. 



The Management of Special Soils 264 



{Drifting Soils). — 217. The Damage Caused by Soil 

 Drifting.— 218. The Chief Factors Favoring Soil Drift- 

 ing.— 219. The Chief Causes of Soil Drifting.— 220. 

 The Means Employed to Prevent Excessive Dam- 

 age. — 221. Increasing the Moisture Content. — 222. 

 Increasing the Organic Matter Content. — 223. Modifying 

 the Structure of the Soil. — 224. Growing Protecting 

 Crops. — 225. Perennials as Protecting Crops. — 226. Win- 

 ter Rye Lessens Drifting. — 227. Late Sown Oats for 

 Soil Protection.— 228. Stubble as a Soil Protector,-^ 



