Krishikranti Ampelomyces Quisqualis Bio Fungicide Liquid is a ready-to-use liquid spray for powdery mildew control. Made with live friendly fungus that kills powdery mildew from inside the disease itself. Best liquid bio fungicide for grapes, mango, cucumber, pumpkin, bitter gourd, apple, chilli, rose, strawberry, pea, tomato, and okra. Easy to mix. No dust. No clumps. Zero residue. Safe for organic farming and export crops.
TypeBio Fungicide (Liquid)
FormReady-to-Mix Liquid
StopsPowdery Mildew Only
How to UseFoliar Spray
SafetyZero residue, Organic safe
Best UsePreventive + Early Disease
Liquid vs Powder : Why Choose Liquid?
The liquid form has some big practical advantages over the powder form:
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Easy to mix: Just shake the bottle and pour into water. No lumps. No clumps
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Uniform spray: Mixes fully in water. Spray comes out even on every leaf
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No dust during handling: Safer for the farmer's eyes, nose, and skin
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Better for power sprayers: Liquid does not block nozzles like powder can
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Long shelf life: Live spores stay active longer in liquid form when stored cool
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Faster action on leaves: Liquid drops stick and start working quickly
What is Powdery Mildew?
Powdery mildew is a white powder-like fungus that grows on plant leaves, stems, flowers, and fruits. It looks like the plant has been dusted with white flour or chalk. The white powder slowly turns yellow, then brown. Leaves dry up. Plants stop growing. Fruits stop developing. Yield drops badly.
It is a major problem in grapes, cucumber, pumpkin, bitter gourd, mango, apple, chilli, strawberry, pea, rose, tomato, and okra (bhendi). It spreads fastest in humid weather, cloudy days, and morning dew.
How Ampelomyces Quisqualis Stops Powdery Mildew
Ampelomyces quisqualis is a friendly fungus. But it does only one job — it eats powdery mildew. Nothing else. It is the world's only biological that kills powdery mildew from inside the disease itself.
This is called hyperparasitism one fungus killing another fungus. It works on all kinds of powdery mildew (Erysiphe, Sphaerotheca, Podosphaera, Uncinula, Leveillula, Oidium).
Important Be Honest: This product stops
only powdery mildew. It does NOT control downy mildew, blight, anthracnose, leaf spot, or wilt. For those, see other bio fungicides like
Pseudomonas fluorescens or
Trichoderma viride.
Crops Where This Liquid Stops Powdery Mildew
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Powdery mildew in grapes : The biggest use. Stops white powder on leaves, stems, and bunches
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Powdery mildew in cucumber, pumpkin, bottle gourd, bitter gourd, ridge gourd : White spots on cucurbit leaves
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Powdery mildew in mango : Especially during flowering and fruit set
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Powdery mildew in apple : White growth on shoots and leaves
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Powdery mildew in chilli : White-yellow patches on leaves
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Powdery mildew in pea : Common in cold-season pea
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Powdery mildew in strawberry : White growth on leaves and fruits
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Powdery mildew in tomato : White spots on lower leaves first
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Powdery mildew in rose : White growth on buds and young leaves
- Powdery mildew in okra (bhendi), beans, coriander, cumin, mulberry, ber
See related options in Bio Fungicides Collection, Organic Fungicides, Fungicide for Grapes, Fungicide for Mango, Fungicide for Cucumber.
Dose & How to Use (Common for All Crops)
Same simple liquid dose works for all crops. Just shake the bottle, pour into water, and spray.
| Crop |
Dose |
Spray Schedule |
| Grapes |
5 ml per litre water
(1.5–2 L per acre) |
Every 7–10 days from flowering till harvest |
| Mango |
5 ml per litre water
(1.5–2 L per acre) |
Start at flowering. Repeat after 10 days |
| Cucumber, Pumpkin, Bitter Gourd, Bottle Gourd |
3–5 ml per litre water
(1–1.5 L per acre) |
Every 7–10 days during humid weather |
| Apple |
5 ml per litre water
(1.5–2 L per acre) |
Every 10–14 days from bud break |
| Chilli |
3–5 ml per litre water
(1–1.5 L per acre) |
Every 10 days during disease season |
| Pea |
3–5 ml per litre water |
Start at flowering. Repeat after 10 days |
| Strawberry |
3 ml per litre water |
Every 7–10 days |
| Tomato |
3–5 ml per litre water |
Every 10 days during humid weather |
| Okra (Bhendi) |
3–5 ml per litre water |
Every 10 days |
| Rose & Ornamentals |
3 ml per litre water |
Every 7–10 days |
Quick Dose Reference: Foliar Spray: 3–5 ml per litre water • Per Acre: 1–2 litres • Repeat: Every 7–10 days during disease season • Spray Time: Early morning or late evening
How to Spray Step by Step
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Step 1: Shake the bottle well before opening
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Step 2: Pour the right dose into a small amount of water. Stir lightly
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Step 3: Add this mixed water to the main spray tank. Stir again
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Step 4: Spray full plant both upper and lower side of leaves. Cover stems, flower buds, and fruits
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Step 5: Spray in early morning or late evening. Never in hot sun
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Step 6: Repeat every 7 to 10 days during cloudy or humid weather
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Step 7: Use within 4 hours of mixing fresh mix gives best result
Important Tip Humidity Matters: Ampelomyces quisqualis works best when air humidity is above 60–70%. That is exactly when powdery mildew also spreads fast. So spray during cloudy, humid, or post-rain days. Do not spray on dry, hot, sunny afternoons the friendly fungus will not survive.
When to Use
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Preventive (best result): Start spraying 7 to 10 days before powdery mildew comes based on weather and your past field experience
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Early stage: When you see first 2–3 white spots on leaves
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Flowering stage: Very important for grapes, mango, pea, strawberry, and roses
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Cloudy and humid weather: Most powdery mildew outbreaks happen here
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For resistance management: Use between sulphur or chemical sprays to slow down resistance
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Right up to harvest: Zero waiting time safe to spray even on harvest day
How Does It Work?
Ampelomyces quisqualis is a hyperparasite a fungus that eats other fungi. It works in 4 simple steps:
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Step 1: The friendly fungus spores fall on powdery mildew patches
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Step 2: They grow tiny tubes that enter the powdery mildew threads
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Step 3: They eat the powdery mildew from inside using its body as food
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Step 4: Powdery mildew dies. New spores cannot form. Disease stops spreading
It is slower than chemical sprays in the first 5–7 days. But once it starts working, the disease does not come back fast because the friendly fungus stays alive on the plant and keeps killing new powdery mildew that tries to grow.
⚠️ Do Not Mix With: Sulphur sprays (wettable sulphur, sulphur dust), copper fungicides (copper oxychloride, copper hydroxide), or strong chemical fungicides — they will kill the friendly fungus. Keep 10–14 days gap before or after any sulphur or chemical fungicide spray. Safe to mix with neem oil and biofertilizers.
Storage & Shelf Life
- Store in a cool, dark place not in direct sunlight
- Best storage temperature: 4°C to 25°C
- Keep the bottle tightly closed when not in use
- Do not freeze
- Shelf life: 12 months from date of manufacture (when stored properly)
- Shake well before each use
Why Grape, Cucurbit & Mango Farmers Choose This
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Best liquid biological for powdery mildew: No other liquid bio fungicide is as specialist or as strong
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Easy to mix and spray: Liquid form means no lumps, no powder dust, no nozzle blockage
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Zero residue: Safe for export-grade grapes, mango, and vegetables. No waiting time before harvest
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No resistance build-up: Powdery mildew has become resistant to many chemicals but it cannot become resistant to a hyperparasite
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Saves chemical sprays: Use this between chemical sprays. Chemical use drops by 30–50%
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Stays active for long: Once it grows on the plant, it keeps working for many days
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Works in humid weather: Exactly when chemical fungicides wash off, this biological works best
Frequently Asked Questions
Q. What is Ampelomyces quisqualis liquid used for? Ampelomyces quisqualis liquid is a specialist bio fungicide used only for powdery mildew control in grapes, mango, cucumber, pumpkin, bitter gourd, apple, chilli, strawberry, pea, rose, tomato, and okra. It does not control any other disease.
Q. How much Ampelomyces quisqualis liquid to mix in 1 litre water? Mix 3 to 5 ml of liquid in 1 litre of water for foliar spray. For grapes, mango, and apple use 5 ml per litre. For cucurbits, chilli, pea, and tomato use 3 to 5 ml per litre.
Q. What is the dose per acre for the liquid? Use 1 to 2 litres per acre depending on crop and disease pressure. For grapes, mango, and apple: 1.5 to 2 litres per acre. For cucurbits, chilli, and vegetables: 1 to 1.5 litres per acre.
Q. Liquid or powder which is better? Both have the same active fungus. Liquid is easier to mix, has no dust, sprays more evenly, and does not block nozzles. Powder gives more units per kg and stores well at room temperature. Most farmers using power sprayers prefer the liquid form.
Q. How to control powdery mildew in grapes with this liquid? Spray 5 ml per litre of water every 7 to 10 days from flowering till harvest. Start before powdery mildew appears. Spray in early morning or late evening. Cover both upper and lower leaf surfaces.
Q. How to stop powdery mildew in cucumber and pumpkin? Spray 3 to 5 ml per litre of water at first sign of white spots. Repeat every 7 to 10 days during humid weather. Pay extra attention to under-side of leaves where powdery mildew starts.
Q. Can it be mixed with sulphur or chemical fungicides? No. Sulphur and chemical fungicides kill the friendly fungus. Keep 10 to 14 days gap before or after any sulphur or chemical fungicide spray.
Q. Is this liquid safe for grapes and export crops? Yes. It is residue-free with zero waiting time before harvest. Approved for organic and export-grade grapes, mango, and vegetables.
Q. When is the best time to spray? Spray in early morning or late evening when humidity is high. Do not spray in strong afternoon sun. Cloudy days, humid mornings, or post-rain conditions give the best result.
Q. Can it be used in organic farming? Yes. It is approved for organic and natural farming systems. Safe for plants, animals, soil, bees, and people. Zero chemical residue.
Q. How long does the bottle last after opening? Use within the printed expiry date. Once opened, store in a cool dark place, keep tightly closed, and shake well before each use. Best results when used within 6 months of opening.
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