Economically Optimal Fertilizer Requirements for Wheat and Paddy Crops in Different Regions of Uttar Pradesh

This study examine the regional and year-wise variations in the crop yield responses to the levels of fertilization in four regions of Uttar Pradesh. The levels of N, P, K also which would optimise the yields of high yielding wheat and paddy crops in the respective regions. A number of specifications of the functional form of crop yield response to fertilizer are available. The highest fertilizer productivity in either crop was observed in the western region except in the year 2005–06 in the Paddy crop where higher productivity was observed in the central region, on an average, over the crop seasons, as high as 12.44 kg of wheat output and 13.21 kg of Paddy output can be obtained, with the application of one additional kg. of fertilizer in the western region.