Well, at some point, that part of the world decided that they'd use weight to measure produce, as opposed to volume. So now, if you read a scientific paper fro

Well, at some point, that part of the world decided that they'd use weight to measure produce, as opposed to volume. So now, if you read a scientific paper from Europe, you will get numbers in KG, likely with no indication of moisture content (since they don't particularly care). So, you're left with an inaccurate conversion to bushels, or more likely, you simply don't use the paper. The same goes for the other way around; there's probably a whole lot of rework that happens due to this incompatibility.