Common crops affected
What is it?
Nitrogen is a mobile nutrient central to chlorophyll and protein, so plants move it from old leaves to new growth when short. That is why deficiency appears first on the oldest, lowest leaves as uniform yellowing. Causes include low soil fertility, leaching after heavy rain or irrigation, and high demand during rapid growth.
How to identify it
- Uniform pale green to yellow color starting on older, lower leaves
- Stunted, slow, spindly growth and small leaves
- Yellowing that progresses up the plant if uncorrected
- Overall lack of vigor and reduced yield
Damage and how it spreads
Nitrogen shortage limits growth, leaf area, and yield, and weakens plants overall. Because nitrogen leaches easily and demand peaks during rapid growth, deficiency can develop quickly in sandy soils and wet conditions. Correcting it promptly restores vigor; chronic shortage costs significant yield.
How to control it
- Confirm with leaf symptoms (old leaves first) and, ideally, a soil or tissue test.
- Apply available nitrogen to meet the crop's growth-stage demand.
- Split applications to match uptake and reduce leaching losses.
- Maintain balanced overall nutrition so nitrogen isn't the limiting factor.
Recommended Vegalab solution: Nitrogen Pro
Vegalab Nitrogen Pro is an advanced water-soluble nitrogen fertilizer for fast-growing plants, ideal for correcting deficiency quickly and feeding vegetative growth. Where a balanced feed is more appropriate, NPK Pro (all-purpose water-soluble) and Vega Pro (early-season general purpose) supply nitrogen alongside other nutrients. Grow Boost can further amplify vegetative growth once nitrogen is restored. Apply per label and split feeds to match demand.
| Role | Product | Use |
|---|---|---|
| Primary correction | Nitrogen Pro | Water-soluble nitrogen |
| Companion / broader pressure | NPK Pro | Balanced water-soluble feed |
| Plant support | Vega Pro |
Preventing it next season
Match nitrogen supply to each growth stage, split applications to limit leaching, and keep nutrition balanced. Nitrogen Pro and NPK Pro make it easy to feed precisely through the season.
Claims and product availability vary by jurisdiction. Always read and follow the product label.