One-third of the fertilizer applied to grow corn in the U.S. each year simply compensates for the ongoing loss of soil fertility, leading to more than a half-billion dollars in extra costs to U.S. farmers every year, finds new research from the University of Colorado Boulder published last month in Earth’s Future.
Click here for original story, Soil degradation costs U.S. corn farmers a half-billion dollars every year
Source: Phys.org