Not only that, but certain fertilizers (like phosphorus) are in limited supply. The fact the US effectively subsidizes the dumping of these valuable micronutrie

Not only that, but certain fertilizers (like phosphorus) are in limited supply. The fact the US effectively subsidizes the dumping of these valuable micronutrients is baffling. http://web.mit.edu/12.000/www/m2016/finalwebsite/solutions/phosphorus.html http://web.mit.edu/12.000/www/m2016/finalwebsite/solutions/p...