FERTILIZERS AND THE DOMINANT US CROP. “Today, the United States remains a massive nitrogen-fertilizer user; with just 5 percent of the world’s population, we consume about 12 percent of global nitrogen-fertilizer production. And corn—which according to the USDA “requires the most nitrogen per acre” of any crop—remains at the center of our agriculture, covering 30 percent of farmland each year.””
”
http://lnkd.in/dACUYyz