Scientific American...Lessening fertilizer use in the U.S. and China would free up nutrients to be applied to fields in eastern Europe and western Africa with no detriment to American or Chinese people. As it stands, the researchers estimate that some 11 million metric tons of nitrogen fertilizer and five million metric tons of phosphate could be saved annually at present without diminishing current yields. Those savings then could be applied to underachieving areas.
Please continue reading at:
