Estimating the Yield Advantage of High-Yielding Wheat and Maize: The Use of Pakistani On-Farm Yield Constraints Data

Joseph G. Nagy


This paper briefly reviews the index number approach to
estimating the contribution made by crop development research and then
discusses the use of on-farm yield constraint data to measure the
rightward shift in the supply curve. Yield constraint data on wheat and
maize from Pakistan are used as an illustration.

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