Ferguson developed a hydraulically activated three-point hitch to which implements could be attached and which could lift and lower implements to the required working position. Ferguson also developed automatic control systems (draft, position) which greatly enhanced the performance of the equipment. Draft control is a system whereby the drawbar pull can be maintained at a constant level by automatically adjusting the position of the implement (e.g. plow) in response to variations in draft (e.g. soil resistance).
The history of agricultural growth and mechanization in some of today's industrial countries illustrates this generalization. In 1880, factor endowments differed widely among these countries, with Japan having only 0.65 hectares of land per male worker and the United States about forty times as much (see Binswanger and Ruttan 1978, tables 3-1 and 3-2).

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Ferguson developed a hydraulically activated three-point hitch to which implements could be attached and which could lift and lower implements to the required working position. Ferguson also developed automatic control systems (draft, position) which greatly enhanced the performance of the equipment. Draft control is a system whereby the drawbar pull can be maintained at a constant level by automatically adjusting the position of the implement (e.g. plow) in response to variations in draft (e.g. soil resistance).
The history of agricultural growth and mechanization in some of today's industrial countries illustrates this generalization. In 1880, factor endowments differed widely among these countries, with Japan having only 0.65 hectares of land per male worker and the United States about forty times as much (see Binswanger and Ruttan 1978, tables 3-1 and 3-2).

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