Fertilizer has staying power
Nitrogen may persist in soil for 80 years, scientists find
![](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2013/10/gp_SciSource_7F1100_feat.jpg?fit=860%2C460&ssl=1)
LONG-LASTING FERTILIZER Nitrogen fertilizer used on crops such as winter wheat (shown) can remain in soil for decades.
Phil Farnes/Photo Researchers, Inc.
Nitrogen may persist in soil for 80 years, scientists find
LONG-LASTING FERTILIZER Nitrogen fertilizer used on crops such as winter wheat (shown) can remain in soil for decades.
Phil Farnes/Photo Researchers, Inc.