Fertilizer Response Information and Income Gains: The Case of Potatoes in Peru

James G. Ryan and Richard Perrin

American Journal of Agricultural Economics, 1974, vol. 56, issue 2, 337-343

Abstract: Yield response to different levels of fertilizer on various soils is estimated by a generalized response function. Average new income generated by use of optimum levels is estimated at over $800 per hectare. The social gain to Peru is estimated to be as much as $50 million annually.

Date: 1974
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