"By 2005 corn yields in the Midwest and China were about the same, but Chinese farmers were using about 525 pounds of nitrogen fertilizer per acre compared with 83 pounds in the Midwest, and farms in northern China generated nearly 23 times the amount of excess nitrogen than those in the Midwest."
That's from a press release from Cornell U about a Science article one of their professors participated in (via Extension.org).
I guess I've still got images of "The Good Earth" at the back of my mind. Unfortunately, I suspect a lot of us would be surprised at this.
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