Final (updated) version posted Dec. 1, 2014

Commissioned by the CGIAR Science Council and prepared as a Background Paper for the 2008 World Development Report of the World Bank.

This is a prepublication version of J.M. Beddow, T.M. Hurley, P.G. Pardey, and J.M. Alston’s “Food Security: Yield Gap” chapter in N. Van Alfen, editor-in-chief, Encyclopedia of Agriculture and Food Systems, Vol. 3, San Diego: Elsevier, 2014, pp. 352-365.

[Supporting Material for “A Bounds Analysis of World Food Futures: Global Agriculture Through to 2050.” Australian Journal of Agricultural and Resource Economics 2014 (forthcoming)]

Confirming the precision agriculture hypothesis for variable rate nitrogen applications (VRA) is challenging. To confront this challenge, researchers have used increasingly sophisticated statistical models to estimate and compare site-specific crop response functions (SSCRFs). While progress has...