. Dry farming in western Canada. Canada. Agriculture Canada; Dry farming. 116 DRY FARMING is not a harrow or cultivator but only a seeder. (Fig. 43D). 87. Drag" or Smoothing1 Harrows.—The purpose of the drag or smoothing harrow is to prepare a level and uni- form surface after other kinds of tillage, or to destroy young weeds by exposing their roots to the sun and air, or to form a mulch on the surface to conserve moisture or to aid in covering the seed after sowing. The drag harrow may be heavy or light, have wooden or steel frames and the teeth may be stationary (Fig. 41 A) or. effiw;?&
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. Dry farming in western Canada. Canada. Agriculture Canada; Dry farming. 116 DRY FARMING is not a harrow or cultivator but only a seeder. (Fig. 43D). 87. Drag" or Smoothing1 Harrows.—The purpose of the drag or smoothing harrow is to prepare a level and uni- form surface after other kinds of tillage, or to destroy young weeds by exposing their roots to the sun and air, or to form a mulch on the surface to conserve moisture or to aid in covering the seed after sowing. The drag harrow may be heavy or light, have wooden or steel frames and the teeth may be stationary (Fig. 41 A) or. effiw;?" Fig. 41.—Types of Harrows. (a) Steel harrow; (b) Adjustable harrow; (c) Spring tooth harrow (d) Acme harrow. adjustable (Fig. 41B). The light lever harrow with teeth sloping slightly backward is frequently used in the growing crop of grain, corn or potatoes for killing small weeds. The spring tooth harrow I Fig. 410) has the same function as the spring tooth cultivator. II is lighter in draft but less efficient. The acme harrow (Fig. 41D) smooths the surface, cuts small weeds and forms a mulch, but it is not well adapted 1u general use under average farm conditions.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Bracken, John, 1883-. Winnipeg, Canada : The Grain Growers' Guide, Ltd.