When implementing conservation tillage, how should nitrogen be applied for corn?

Applying nitrogen below the surface when implementing conservation tillage is preferable because it helps prevent volatilization, which is the loss of nitrogen into the atmosphere. In conservation tillage practices, the surface residue can inhibit the effective use of nitrogen if it is applied directly on the surface. By placing nitrogen below the surface, it is better protected from potential loss through volatilization and also provides enhanced access to the root zone of the corn plants. This method ensures that the crop receives the necessary nutrients directly where they are most effective, promoting better growth and yield.

In conservation tillage systems, surface application can lead to increased nitrogen loss due to factors such as moisture conditions and temperature, which can cause volatilization of certain nitrogen forms, especially urea. Thus, incorporating nitrogen below ground not only improves nitrogen efficiency but also aligns more closely with conservation practices that focus on soil health and moisture retention.