Foliar Disease Protector
A contact fungicide for fast surface protection against a broad range of foliar diseases. Easy to apply with quick-drying formulation that forms a durable protective film on leaf surfaces. Ideal for vegetable growers and smallholders looking for a reliable, affordable disease shield.
How to Use
Use Preventively
Foliar Disease Protector works as a surface barrier — it prevents spores from germinating on the leaf but cannot cure existing infections. Begin applications before disease symptoms appear, especially at the start of humid or rainy weather.
Mix the Solution
Shake the bottle well. Add 15–20 mL per 10 litres of water. The solution will appear milky-grey — this is the suspended concentrate. Stir continuously while filling the sprayer to prevent settling.
Apply Complete Coverage
Spray both leaf surfaces — upper and lower. The protective film must be present where spores land. A fine mist is more effective than coarse droplets for uniform coverage. Aim for 300–400 L/ha for dense canopy crops.
Spray in Dry Conditions
Apply when no rain is expected for at least 4 hours. Spray in the morning after dew has dried. Wind speeds should be below 10 km/h. Avoid spraying during the hottest part of the day — leaf pores close in heat and absorption is reduced.
Repeat Interval
Repeat every 7–14 days depending on disease pressure and weather. In heavy rainy season, spray every 7 days. During drier periods, 14-day intervals are sufficient. Maximum 6 applications per season.
Post-Spray Cleanup
Rinse sprayer with clean water after every use. Chlorothalonil can leave a grey residue — a brief soak in a citric acid solution (1 tsp per 10L) helps clean the nozzle screen. Wear gloves and eye protection during cleanup.
Key Features
Multi-Disease Spectrum
Effective against 40+ fungal pathogens including Alternaria, Cercospora, Botrytis, and early blight — one product for multiple disease threats.
Rainfast in 30 Minutes
SC (Suspension Concentrate) formulation dries fast and resists washoff. Effective protection is maintained even after light showers within 30 minutes of application.
Cost Effective
At $31 for 250 mL treating approximately 1.25 hectares, it is one of the most affordable broad-spectrum fungicides available per hectare treated.
Wide Crop Registration
Registered for tomatoes, onions, carrots, potatoes, cabbages, beans, and many export vegetables. One product fits multiple crop rotations.
Resistance Low Risk
Multi-site mode of action (inhibits multiple fungal enzyme pathways simultaneously) — fungal resistance development is very rare with chlorothalonil.
Consistent Formulation
SC formulation holds active ingredient in stable suspension, ensuring the same dose every time with no clumping or settling that can occur in wettable powder products.
Safety & Application Tips
- Chlorothalonil is a skin, eye, and respiratory irritant. Always wear nitrile gloves, full-face eye protection, long sleeves, and a P2 dust/mist mask during mixing and application.
- Do not apply within 20 metres of fishponds or water courses — chlorothalonil is toxic to aquatic organisms at low concentrations.
- For Cercospora leaf spot on beans, start applications at first trifoliate leaf stage — waiting until visible spots appear means the disease is already established and a systemic fungicide (Systemic Fungicide Plus) may be needed alongside.
- Do not tank-mix with oil-based products or emulsifiable concentrates — the SC formulation can break down and cause phytotoxicity when mixed with oils.
- Always observe the 14-day pre-harvest interval. Do not harvest treated crops early even if the spray residue appears to have washed off.
