Crop and Soil N Management

This section will focus on the basics and applications of manure and fertilizer N management, including the following topics.

What's so important about nitrogen?

• Problems with N deficiencies.
• Problems with excessive N.

The N Cycle

• The basic N conversion processes and the field conditions that favor them.

Crop N Guidelines: the Corn Example

• Accounting for sources of N.
• How N credits change given different field conditions (e.g. soil types, plowed sods, drainage, etc.).
• The method of calculating a corn N guideline.