Dry farming in western Canada Dry farming in western Canada . dryfarminginwes00brac Year: 1921 150 DRY FARMING the spring will be of great value in crowding out weeds in the stubble crop. The perennial plants, among which the native quack, sweet grass and prairie rose are the most common, are serious pests in many stubble fields. They spread not only Fig. 60.—Effect of Disking Stubble Land. Diagram showing on the left uncultivated stubble, and on the right double disked stubble. Note the absence of cracks in the subsoil of the cultivated land. by seeds but by underground creeping stems. Th
Dry farming in western Canada Dry farming in western Canada . dryfarminginwes00brac Year: 1921 150 DRY FARMING the spring will be of great value in crowding out weeds in the stubble crop. The perennial plants, among which the native quack, sweet grass and prairie rose are the most common, are serious pests in many stubble fields. They spread not only Fig. 60.—Effect of Disking Stubble Land. Diagram showing on the left uncultivated stubble, and on the right double disked stubble. Note the absence of cracks in the subsoil of the cultivated land. by seeds but by underground creeping stems. These weeds cannot be controlled by burning or disking or other surface cultivation. Plowing, preferably in the dry season, when the roots can be exposed to the hoi sun and drying wind, is the only remedy for those legacies of poor breaking. Other plants of a similar nature art1 brome grass, Canada thistle and sow thistle. 122. Securing a Good Seed Bed.—A good seed bed is one that provides the conditions necessary for germination— heat, air and moisture—in optimum amount, at the right depth, at the time the seed is sown. Too often the sur- face of our stubble fields is too hard to get the seed into, or too dry to cause germination, or covered with disked stubble through which the drill cannot satisfactorily
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