However, on a global scale the agricultural input industry is more monopolized than the food retail industry. In the agricultural input industry, three agro-chemical corporations control approximately half the world market (UNCTAD, 2006), while the top five food retailers control only around 13% of the total market.
Source: FROM SUPPLY TO FOOD SECURITY (contd.) STABILITY OF FOOD SUPPLY, Rapid Response Assessments. UNEP GRID http://www.grida.no/publications/rr/food-crisis/page/3571.aspx Accessed February 14, 2011