Canadian Agronomy Guidance: Balancing N Fertilization

Guidance on nitrogen fertilization balancing lodging risk reduction with yield and quality.

Moderate Nitrogen and Stalk Strength in Maize

Field study showed ~180 kg N/ha improved basal internode structure, reducing stalk rot and lodging risk.

Optimized N and Plant Density Effects on Maize Lodging

Proper nitrogen supply and planting density improved stalk architecture and basal internode strength, reducing lodging.

Density + Reduced Nitrogen Strategy (DINS) in Rice

Lower nitrogen with higher density reduced lodging index 18–33% by lowering height, center of gravity, and increasing lignin/cellulose.

Managing Lodging Risk with Split N Applications in Wheat

Excess early-season N creates weak stems prone to lodging. Split applications strengthen stands.

Balancing Nitrogen to Avoid Lodging While Improving Yield

Review emphasizes excessive N raises lodging risk, while optimized management supports yield and standability.

Nitrogen and Plant-Pathogen Interactions

Review shows moderate N promotes defense proteins, excessive N can fuel pathogen growth.

Nitrate vs. Ammonium Forms in Plant Defense

Nitrate enhances immune signaling, ammonium suppresses defenses and can favor pathogens.

Nitrogen Form and Timing in Plant Defense

Nitrogen form and timing influence systemic resistance and pathogen interactions in crops.

Nitrogen Fertility and Insect Herbivory

Higher N rates increase pest attractiveness (e.g., aphids), while balanced fertility reduces outbreaks.

Corn Nitrogen Fertility and European Corn Borer

Excess nitrogen linked with higher corn borer damage, while moderate N reduced pest severity.

Nutrient Management and Insect/Disease Resilience

Integrated N and micronutrient management improves resilience against insects and diseases.

Nitrogen and Corn Stalk Rot

Excess nitrogen increases stalk rot incidence, while balanced rates strengthen stalk lignification.

Nitrogen and Fusarium Stalk Rot

Excess N encourages Fusarium stalk rot, while moderate N reduces infection severity.

Split N Applications Improve Corn Stalk Health

Split nitrogen application improved stalk quality and reduced lodging and disease incidence.