Common crops affected
Why it matters
It spreads fast in crowded canopies, cuts photosynthesis and yield, and downgrades fruit; in high-value crops it can be economically serious. Early and preventative action wins.
When to act
Start preventively as canopy closes and humidity climbs; maintain cover through production.
What to look for
- White powdery patches on upper leaf surfaces, spreading fast
- Yellowing and browning of colonised leaves
- Premature leaf death and exposed fruit
- Shortened picking window
How to manage it
- Open the canopy for airflow; avoid excess nitrogen.
- Remove affected leaves.
- Apply Mildew Control (1:2,000) at first sign and preventatively on susceptible crops.
Recommended Vegalab program
Mildew Control — encapsulated, adherent actives for rainfast, resistance-friendly cover on cucurbits.
| Role | Product | Use |
|---|---|---|
| Primary control | Mildew Control | Geraniol 17%; preventative + early curative |
| Broad-spectrum companion | Spore Control | Thymol broad-spectrum fungicide |
| Plant resilience | Armour Boost | Silica for resilient tissue |
Product claims, rates, and availability vary by jurisdiction; always follow the applicable label.