International crop yield comparisons: selected KRU regions.

Abstract

When studying Kazakhstan, Russia and Ukraine (KRU) regional crop yields, the effect of fertilizer choice on Russian grain yields is ultimately an empirical question requiring a point of comparison. In this chapter, we compare Russian input and output levels with those for the USA. Most of the shortfall in KRU regional grain yields can be explained by low yields in Kazakhstan. Extending these results, most of the shortfall in Kazakhstan is associated with lower fertilizer application rates.