Common crops affected
- Commercial Crops
Why it matters
They cover and kill leaf tissue, cutting photosynthesis and yield; many spread on wind, so protecting susceptible foliage matters.
When it appears
Humid conditions; spores spread on wind.
How to identify it
- Orange, yellow, or rusty pustules, often on leaf undersides
- Yellow spots above the pustules
- Premature yellowing and leaf drop
How to manage it
- Improve airflow; remove infected leaves.
- Apply Spore Control (1:1,000) at first sign, covering leaf undersides.
Recommended Vegalab program
| Role | Product | Use |
|---|---|---|
| Primary control | Spore Control | Protective; cover leaf undersides |
| Plant resilience | Armour Boost | Resilient tissue |
Product claims, rates, and availability vary by jurisdiction; always follow the applicable label.