As the EU presses its farmers to adopt practices that are environmentally sound, these producers increasingly agitate to have the same standards applied to food produced elsewhere and imported into Europe. It is an understandable plea for fairness but arriving at sound and equivalent measurements will be a challenge. According to FAO data, France and Germany apply more tons of nutrients per square kilometer of arable land than most other major agricultural producing countries except China. The first problem is the soundness of this data. Russia, Ukraine, the U.S., France and Germany all provide their official surveyed data to the FAO. However, the numbers used for Argentina, Brazil and China are, “official, semi-official, estimated,...