Zambia’s maize crop grew by roughly 48% between the 2009 and 2010 harvests, leading to the largest crop recorded in recent history. The 2009 maize harvest was also very good, making the 48% rise in 2010 even more remarkable. The forces driving that increase, however, remain widely debated....

Key Points • Zambia’s maize crop grew by 48% between the 2009 and 2010 harvests, leading to the largest crop recorded in recent history. • Yield growth accounted for 59% of the maize production growth between 2009 and 2010. Expansion of area planted to maize explains an additional 23%,...