Queiroz, Pedro W. V.

January, 2023

By: Queiroz, Pedro W. V.; Perrin, Richard K.; Fulginiti, Lilyan E.; Bullock, David S.
This paper examines the expected payoff to variable rate technology for fertilizer application in terms of a Bayesian expectation of the value of sample information (EVSI). The optimal variable rate for each cell in a field is conditioned on a signal in the form of the electrical conductivity of soil at that cell. Using corn response to nitrogen data from ten on-farm field-level experiments, we calculate the expected payoff from variable rate technology versus a uniform rate applied to all cells to be about $1.81/acre.