Crop N Guidelines: Calculating Corn N Guidelines

To get a feel for calculating N requirements for corn, try out some scenarios using the Corn N calculator below.

1. How many lbs/acre of N are needed for a corn crop on a Volusia soil, with no artificial drainage, in its first year after the plow-down of a 26%-50% legume sod?
2. Now how much N is needed if it's the 3rd year after plowing the sod?
3. Next, include artificial drainage (i.e. tile draines) into the mix. How much N is needed now?
4. Switch the soil type to "Howard". How much N is required, now?
5. Try out other options across soil type, drainage, years after sod, and % legume and see how the factors and N requirements vary.

To read more on this subject: Nitrogen Guidelines for Field Crops in New York State (sections 3.1, 3.2, and 4.1).

To download an Excel spreadsheet from the Nutrient Management Spear Program at Cornell University to calculate N guidelines for corn: New York State Corn N Calculator.