Skip to main content


This is the official Cornell University College of Agriculture and Life Sciences website for fertility and nutrient management guidelines for field crops.


The guidance presented in these documents reflects the current (and past) authors’ best effort to interpret a complex body of scientific research, and to translate this into practical management options. Following the guidance provided in this fact sheet does not assure compliance with any applicable law, rule, regulation or standard, or the achievement of particular discharge levels from agricultural land.

Please select a section from the items in the navigation bar on the left side.