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Most tillage implements used on farms in Western Canada are of the trailing type. Depth of tillage is controlled from the tractor by manually operating valves that actuate hydraulic cylinders. The discer is one of these implements, and is used for both tillage and seeding. The depth of tillage of the discer under manual control varies considerably. Harrison (3) reported a depth variation of
automatic depth control for a discer
Dyck, F.B. 1975. AUTOMATIC DEPTH CONTROL FOR A DISCER. Canadian Agricultural Engineering 17(1):47-49.
47 - 49