Even in countries where farming is beginning to be mechanized, power tillers and tractors are still restricted to tillage and a few other operations. This paper discusses the history of mechanization, the major reasons for the wide diversity observed, the options for developing countries in extending mechanization, and the role of government policy in influencing the choice of technology.
This generalization corresponds to the substitution view of agricultural mechanization (Binswanger 1978). It differs from the net contributor view, which assumes that more machinery-in particular, tractors produces higher yields or other gains in output, regardless of the economic environment in which it is introduced. Such a view usually confuses the direct effects of mechanization with the indirect productivity effects of factor savings.

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Even in countries where farming is beginning to be mechanized, power tillers and tractors are still restricted to tillage and a few other operations. This paper discusses the history of mechanization, the major reasons for the wide diversity observed, the options for developing countries in extending mechanization, and the role of government policy in influencing the choice of technology.
This generalization corresponds to the substitution view of agricultural mechanization (Binswanger 1978). It differs from the net contributor view, which assumes that more machinery-in particular, tractors produces higher yields or other gains in output, regardless of the economic environment in which it is introduced. Such a view usually confuses the direct effects of mechanization with the indirect productivity effects of factor savings.

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