Trading in the secretive commodity

Over the past century and a half, a handful of transnational corporations have built fortunes trading commodity crops such as corn, soy and wheat. Graded and standardized, these commodities are considered uniform and therefore fungible; information about their origins need not accompany them to market. But in recent years major food brands, as part of broader ‘sustainable sourcing’ commitments, have begun to ask about the places and practices that produce these crops. Their inquiries have exposed the limits of the commodity traders’ supposedly unrivalled market intelligence. They also raise questions about how the advent of agricultural grades and standards made knowledge of crop origins seem unnecessary in certain commodity supply chains, and about how those supply chains might henceforth change, now that lack of such knowledge has become a liability.