Tebuconazole 10% + Sulphur 65% WG Fungicide Uses

Tebuconazole 10% + Sulphur 65% WG is a combination fungicide, registered for use in India under the Insecticides Act, 1968, formulated as a water dispersible granule (WG) that pairs a systemic triazole fungicide (tebuconazole) with a traditional multi-site contact fungicide (sulphur). It is registered as a foliar spray against powdery mildew and related fungal leaf and pod diseases across crops including chilli, soybean and groundnut, combining a modern systemic fungicide with a broad-spectrum protectant for wider and more durable disease control. This page lists its mode of action, key benefits and the crop-wise recommended dosage as documented on manufacturer labels.

Which Problem Is This For? (Symptom Guide)

Not sure whether what you're seeing in the field matches this fungicide's use case? This guide helps match symptoms to fungicides sold under brand names including Vexin (Godrej Agrovet).

Mode of Action

This is a dual-active-ingredient fungicide combining two distinct modes of action. Tebuconazole is a systemic triazole fungicide (FRAC Group 3, DMI — demethylation inhibitor) that blocks a specific enzyme step in the fungal pathogen's biosynthesis of ergosterol, a compound essential for building and maintaining fungal cell membranes; without it, fungal growth and spore production are disrupted. Because it is absorbed and moves within the plant, tebuconazole gives both protective and curative activity, including against infections that have already begun. Sulphur, by contrast, is one of the oldest fungicides in use, acting as a multi-site contact (protectant) fungicide (FRAC Group M02) that interferes with several different points in fungal cellular respiration at once, sitting on the leaf surface to prevent new infection rather than curing existing disease, and also having some acaricidal (mite-controlling) activity as a secondary benefit. Combining a single-site systemic (tebuconazole) with a multi-site protectant (sulphur) gives both curative reach and a resistance-management benefit, since fungal pathogens find it much harder to develop resistance to a multi-site mode of action like sulphur.

Features & Benefits

• Dual mode of action combining a systemic curative fungicide (tebuconazole) with a broad-spectrum multi-site protectant (sulphur) in one ready-to-use product.
• Effective against powdery mildew and related leaf-spot and pod-blight diseases across several crops, useful on mixed-cropping farms.
• The multi-site sulphur component helps slow the development of fungicide resistance compared to relying on a single-site systemic fungicide alone.
• Water dispersible granule (WG) formulation that measures and mixes cleanly compared to older dust or wettable powder formulations.

Recommended Usage of Tebuconazole 10% + Sulphur 65% WG Fungicide

The table below gives the recommended dose per acre for each crop and target disease, based on the manufacturer's product label as reproduced by an agri-input retailer, cross-checked against a second independent manufacturer's product listing which cited a similar dose across a broader crop list. Always confirm the recommended water volume and application timing against your current product label before use.

Two independent manufacturer-associated sources for this exact formulation both cited a 500 g/acre dose — one specifically for chilli and soybean, and a second, broader listing (from a different manufacturer's product) citing the same 500 g/acre rate as a general foliar spray dose across a wider list of crops including wheat, rice, groundnut, tea, banana and coffee against various leaf spot, rust, smut, blight and rot diseases. Neither source stated a specific water volume per acre, so this is marked "Not specified in sources checked" rather than estimated (unverified - water volume not found); as a general practice for WG foliar fungicides, mix into enough water for uniform coverage of the crop canopy (typically 150–200 litres per acre for field crops, more for taller or bushier crops), but always follow the water volume printed on your current product label. Converted using 1 ha ≈ 2.47 acres where source data was expressed per hectare.

How to Use

1. Identify your crop and target disease from the table above, and confirm the correct dose per acre and the water volume printed on your current product label.
2. Since this is a water dispersible granule, add the measured quantity directly to the spray tank water and agitate well until fully dispersed before spraying, rather than pre-mixing into a paste.
3. Apply as a fine, uniform foliar spray covering the upper and lower leaf surfaces, since powdery mildew and leaf-spot fungi can establish on both sides of the leaf.
4. Spray at the first sign of disease symptoms for best results, since the systemic tebuconazole component works best when applied early, though it does also have some curative activity against already-established infection.
5. Spray during the early morning or late evening, and avoid spraying in hot, windy conditions or ahead of expected rain, which can wash the protectant sulphur component off the leaf surface before it has time to act.
6. Avoid spraying sulphur-containing products when temperatures are very high (above roughly 32–35°C), as sulphur can cause leaf scorch (phytotoxicity) on some crops under hot conditions — check your product label for specific temperature guidance.

Precautions & Safety

• Wear appropriate PPE — mask/respirator, gloves, goggles and full-sleeved clothing — while mixing and spraying, and avoid inhaling the fine granular dust while opening the pack.
• Avoid tank-mixing sulphur-containing products with oil-based sprays or applying shortly before or after an oil spray, as this combination increases the risk of leaf scorch on many crops.
• Store in the original, tightly closed container in a cool, dry place away from direct sunlight, food and feed, and out of reach of children and livestock.
• Do not exceed the recommended dose or spray frequency; even though the multi-site sulphur component helps manage resistance risk, still rotate with fungicides from a different mode-of-action group where disease pressure is persistent across a season.
• Sulphur can be irritating to skin and eyes; avoid direct contact with the concentrated product and wash exposed skin promptly if contact occurs.
• Wash hands, face and any exposed skin thoroughly with soap and water after handling or spraying, and change out of contaminated clothing before eating, drinking or smoking.

Brand names mentioned on this page are registered trademarks of their respective owners and are referenced here for identification purposes only; FarmMate is not affiliated with or endorsed by these brands. This page is for general information only — always consult your local agricultural extension office and confirm the current product label before use.