Bayer Aliette Fungicide: A Complete Guide for Farmers

Introduction of Bayer Aliette Fungicide
Fungal diseases can severely impact crop health, reduce productivity, and lead to heavy economic losses for farmers. To tackle such damaging infections, Bayer Aliette Fungicide has emerged as one of the most trusted and effective systemic fungicides across India. Known for its unique mode of action, long-lasting protection, and ability to boost plant resistance, Aliette is widely used on fruits, vegetables, ornamentals, and plantation crops.
In this detailed blog, we will explore what Bayer Aliette Fungicide is, how it works, its major benefits, recommended crops and doses, application tips, alternatives, and much more.
Table of Contents
What is Bayer Aliette Fungicide?
Bayer Aliette is a broad-spectrum systemic fungicide containing the active ingredient Fosetyl-Al (80% WP). It is highly effective against Oomycete or water mould fungi, which cause destructive diseases like downy mildew, phytophthora root rot, blight, and collar rot.
Unlike many other fungicides that attack pathogens directly, Aliette stands out for its dual action:
- Direct fungicidal activity on disease-causing pathogens
- Induction of plant defense mechanisms, helping plants resist infections naturally
This powerful combination ensures both preventive and curative benefits.
How Bayer Aliette Fungicide Works
Aliette is rapidly absorbed by plant roots and leaves after application. It then moves both upward (acropetal) and downward (basipetal) within the plant’s vascular system, giving full systemic coverage.
Its mode of action includes:
Inhibiting spore germination and mycelial growth
The active ingredient directly suppresses pathogenic fungi before they can multiply.
Strengthening plant immunity
Aliette induces the formation of phytoalexins—compounds that help crops naturally fight diseases.
Long-lasting protection
It remains active inside plant tissues for several days, guarding new growth as well.
This systemic activity and plant defense activation make Aliette especially valuable for managing soil-borne and root-related fungal diseases.
Also Read: Bayer Nativo Fungicide: A Powerful Solution for Crop Protection
Key Benefits of Bayer Aliette Fungicide

1. Highly Effective Against Oomycete Diseases
Aliette is considered the gold standard for managing phytophthora, pythium, and downy mildew infections across multiple crops.
2. True Systemic Movement
Unlike many fungicides that only move in one direction, Aliette travels in both directions, offering complete protection.
3. Dual Preventive and Curative Action
It protects healthy tissues and stops disease progression in early infection stages.
4. Boosts Plant Health and Vigor
By inducing plant defense responses, Aliette helps crops stay greener, stronger, and more resilient.
5. Safe for Plants
It does not cause phytotoxicity when used as recommended and is compatible with most crop protection schedules.
6. Reduces Yield Losses
Effective disease control ensures healthy crop development and maximum yields.
Also Read: Bayer Acerbo Fungicide: A Powerful Shield for Healthier and More Productive Crops
Recommended Crops and Dosage
Below are common crops in which Bayer Aliette Fungicide is widely used and the typical recommended doses (always follow the label or local agronomist suggestions):
1. Citrus (Oranges, Lemons)
- Target diseases: Phytophthora gummosis, root rot
- Dose: 2–2.5 g per litre of water
- Application: Drenching around the root zone + foliar spray
2. Grapes
- Target diseases: Downy mildew
- Dose: 2 g per litre
- Time of application: Preventive sprays during favourable disease conditions
3. Potato
- Target diseases: Late blight, phytophthora infections
- Dose: 2–2.5 g per litre
- Frequency: 7–10 day intervals depending on disease pressure
4. Tomato & Vegetables
- Target diseases: Root rot, damping-off, collar rot
- Dose: 2 g per litre
- Application: Seedling dip + foliar sprays
5. Ornamental and Nursery Plants
- Target diseases: Pythium and phytophthora
- Dose: 2 g per litre
- Application: Drench or spray depending on crop stage
6. Plantation Crops (Arecanut, Cardamom, Black Pepper)
- Target diseases: Phytophthora wilt, quick wilt
- Dose: 2–3 g per litre
- Application: Soil drench around the base
How to Use Bayer Aliette Fungicide Effectively
To achieve maximum results:
Start with preventive sprays
Apply before disease symptoms appear, especially during humid or rainy conditions.
Maintain proper intervals
Repeat applications based on crop susceptibility and infection pressure.
Ensure thorough coverage
Use enough water volume to cover both upper and lower leaf surfaces for foliar sprays.
Combine with good agronomic practices
Proper drainage, crop rotation, and resistant varieties enhance protection.
Avoid tank-mixing with strong alkaline compounds
Aliette is compatible with most pesticides but avoid mixing it with products that have high pH.
Also Read: Bayer has introduced Felujit fungicide in India best for sheath blight of Paddy!
Alternate Products Farmers Can Consider
If Bayer Aliette is not available, you can choose fungicides with similar action:
- Ridomil Gold (Mefenoxam + Mancozeb)
- Curzate Fungicide
- Fosetyl-Al based generics
- Metalaxyl-based fungicides
These may differ in formulation and application schedule.
Frequently Asked Questions (FAQs)
1. Is Aliette a systemic fungicide?
Yes, it is a fully systemic fungicide with both upward and downward movement.
2. Can Aliette be used as a soil drench?
Absolutely. It is one of the best fungicides for soil drenching against root diseases.
3. Is Aliette safe for young plants?
Yes. It can be used for seedling dips and nursery applications.
4. How long does the protection last?
Typically 10–14 days, depending on climate and disease pressure.
Final Opinion
Bayer Aliette Fungicide is one of the most reliable and effective systemic fungicides for handling oomycete-related diseases in modern agriculture. Its unique ability to combine direct disease control with enhanced plant immunity sets it apart from conventional fungicides. Whether you are managing citrus orchards, vineyards, vegetable crops, or plantation crops, Aliette offers long-lasting, dependable protection and promotes healthier plant growth.
Also Read: About Aliette Fungicide on the BAYER Site







