A remarkable amount of the fertilizer applied via modern industrial farming practices is just wasted: > "According to an average of 13 global databases from 10 data sources, in 2010, 161 teragrams of nitrogen were applied to agricultural crops, but only 73 teragrams of nitrogen made it to the harvested crop. A total of 86 teragrams of nitrogen was wasted, perhaps ending up in the water, air, or soil. The new research…
Getting ~half of the nitrogen from the fertilizer into the harvest seems awfully impressive to me. There are so many ways for nitrogen to escape - into runoff, broken down back into the atmosphere, used to grow weeds and non-productive parts of the plant, etc.