UW–Madison Extension’s on-farm research team has several example custom nitrogen research protocols here.
If you’re looking for 2027 Nitrogen Optimization Pilot Program research projects and protocols, visit our NOPP Protocols webpage.
Cover Crop Management Comparison Trial
Investigate the effect of cover crop management, such as species selection or termination timing, across a standard and reduced commercial nitrogen rate.
Using a replicated research design, this protocol evaluates:
- The effect of cover crops
- Nitrogen rates
- The impact of the two on:
- Yield
- Marginal net return
- Nitrogen use efficiency
- Potentially leachable nitrogen
Nitrogen Application Timing Comparison Trial
Investigate the effect of nitrogen application timing, such as a pre-plant, sidedress, or split application, across a standard and reduced commercial nitrogen rate.
Using a replicated research design, this protocol evaluates:
- The effect of nitrogen application timing
- Nitrogen rates
- The impact of the two on:
- Yield
- Marginal net return
- Nitrogen use efficiency
- Potentially leachable nitrogen
Nitrogen Source Comparison Trial
Investigate the effect of nitrogen source, such as urea or UAN, across a standard and reduced commercial nitrogen rate.
Using a replicated research design, this protocol evaluates:
- The effect of nitrogen sources
- Nitrogen rates
- The impact of the two on:
- Yield
- Marginal net return
- Nitrogen use efficiency
- Potentially leachable nitrogen
Nitrogen Placement Comparison Trial
Investigate the effect of nitrogen placement, such as broadcast, Y-drop, or injection, across a standard and reduced commercial nitrogen rate.
Using a replicated research design, this protocol evaluates:
- The effect of nitrogen placement
- Nitrogen rates
- The impact of the two on:
- Yield
- Marginal net return
- Nitrogen use efficiency
- Potentially leachable nitrogen
Product Trial
Investigate the effect of a product, such as an inhibitor or biological, across a standard and reduced commercial nitrogen rate.
Using a replicated research design, this protocol evaluates:
- The effect of nitrogen products
- Nitrogen rates
- The impact of the two on:
- Yield
- Marginal net return
- Nitrogen use efficiency
- Potentially leachable nitrogen
UW–Madison Extension’s on-farm research team has several example custom nitrogen research protocols here.
If you’re looking for 2027 Nitrogen Optimization Pilot Program research projects and protocols, visit our NOPP Protocols webpage.
Choose an Example Custom Project
Cover Crop Management Comparison Trial
Investigate the effect of cover crop management, such as species selection or termination timing, across a standard and reduced commercial nitrogen rate.
Using a replicated research design, this protocol evaluates:
- The effect of cover crops
- Nitrogen rates
- The impact of the two on:
- Yield
- Marginal net return
- Nitrogen use efficiency
- Potentially leachable nitrogen
Nitrogen Application Timing Comparison Trial
Investigate the effect of nitrogen application timing, such as a pre-plant, sidedress, or split application, across a standard and reduced commercial nitrogen rate.
Using a replicated research design, this protocol evaluates:
- The effect of application timing
- Nitrogen rates
- The impact of the two on:
- Yield
- Marginal net return
- Nitrogen use efficiency
- Potentially leachable nitrogen
Nitrogen Source Comparison Trial
Investigate the effect of nitrogen source, such as urea or UAN, across a standard and reduced commercial nitrogen rate.
Using a replicated research design, this protocol evaluates:
- The effect of nitrogen sources
- Nitrogen rates
- The impact of the two on:
- Yield
- Marginal net return
- Nitrogen use efficiency
- Potentially leachable nitrogen
Nitrogen Placement Comparison Trial
Investigate the effect of nitrogen placement, such as broadcast, Y-drop, or injection, across a standard and reduced commercial nitrogen rate.
Using a replicated research design, this protocol evaluates:
- The effect of nitrogen placement
- Nitrogen rates
- The impact of the two on:
- Yield
- Marginal net return
- Nitrogen use efficiency
- Potentially leachable nitrogen
Product Trial
Investigate the effect of a product, such as an inhibitor or biological, across a standard and reduced commercial nitrogen rate.
Using a replicated research design, this protocol evaluates:
- The effect of nitrogen products
- Nitrogen rates
- The impact of the two on:
- Yield
- Marginal net return
- Nitrogen use efficiency
- Potentially leachable nitrogen