Propiconazole 25% EC Fungicide Uses

Propiconazole 25% EC is a systemic, broad-spectrum fungicide from the triazole (DMI) chemical class, registered for use in India under the Insecticides Act, 1968. It is widely used on cereals (wheat, rice), pulses and oilseeds (groundnut, soybean) and plantation crops (tea) to control rust, smut, sheath blight and leaf spot diseases through a single foliar spray application. This page lists its mode of action, key benefits and the complete crop-wise recommended dosage as per the Central Insecticides Board & Registration Committee's (CIB&RC) official list of approved fungicide uses.

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 this fungicide's approved crop-wise uses.

Mode of Action

Propiconazole belongs to the triazole class of fungicides (FRAC Group 3, DMI — demethylation inhibitors). It works by inhibiting the biosynthesis of ergosterol, a compound essential for building and maintaining the fungal cell membrane; without adequate ergosterol, the fungal cell membrane becomes structurally weak and the pathogen's growth is disrupted. Propiconazole is absorbed by the leaf tissue and translocated systemically (acropetally) within the plant, so it continues protecting new growth and can also act on infections already established in the tissue, giving it both protective and curative activity. Because it targets a single biosynthetic pathway, repeated, back-to-back use on the same pathogen population carries a resistance-development risk, so it should be used as part of a planned spray/rotation program rather than as a season-long, stand-alone treatment.

Features & Benefits

• Systemic movement within the plant gives both protective action ahead of infection and curative action on early-stage disease already present in the tissue.
• Effective against a wide range of rust diseases (yellow/stripe rust, groundnut rust) as well as sheath blight, smuts (Karnal bunt) and leaf spots across cereals, pulses and plantation crops.
• A single, well-timed spray at the right growth stage (e.g. flag-leaf stage in wheat) is often sufficient to give season-long protection against foliar rust, reducing the number of spray rounds needed.
• Emulsifiable concentrate (EC) formulation that mixes readily with water for uniform tank application.

Recommended Usage of Propiconazole 25% EC Fungicide

The table below gives the recommended dose and water volume per acre for each crop and target disease, based on the CIB&RC's official list of approved fungicide uses (Government of India) — see the note below the table for the per-hectare conversion; the converted figures agree closely with the per-acre rate quoted independently on TNAU's list and multiple manufacturer/retailer labels for this exact formulation. Always spray in the recommended water volume for uniform coverage, and confirm against the current product label before use.

Doses above are converted from the official rate published in the CIB&RC’s list of approved fungicide uses (Government of India, the primary national pesticide-registration authority), which states the rate per hectare; converted here to a practical per-acre spray-tank quantity (1 ha ≈ 2.47 acres) and rounded. These CIB-sourced figures also agree closely with TNAU’s list of approved fungicide uses and an independent manufacturer/retailer product label for all six crops, cross-checked as secondary references. Always consult your local agricultural extension office for the latest guidance and confirm the current CIB registration before spraying.

How to Use

1. Identify your crop and target disease from the table above, and confirm the correct dose per acre — the dose and water volume differ for each crop.
2. Measure the required quantity of Propiconazole 25% EC and mix it thoroughly into the spray tank water, agitating well before and during spraying so the emulsion stays evenly mixed.
3. For field crops (wheat, paddy, groundnut, soybean, cotton), apply as a uniform foliar spray using a flat-fan or hollow-cone nozzle for full canopy coverage; for tea, apply the lower, tighter dose range shown for blister blight.
4. Time the spray to the disease-susceptible growth stage of the crop — for example, at first appearance of rust pustules or at the flag-leaf stage in wheat — since propiconazole works best when applied early rather than after disease has spread widely.
5. Avoid spraying in hot, windy conditions or when rain is expected within a few hours, as this reduces efficacy and increases drift/runoff.
6. If disease pressure continues, follow local agricultural extension advice on repeat timing, and always respect the waiting period before harvest; avoid using propiconazole alone, season after season, on the same crop — rotate with a fungicide from a different mode-of-action group to manage resistance risk.

Precautions & Safety

• Wear appropriate PPE — mask/respirator, gloves, goggles and full-sleeved clothing — while mixing and spraying.
• Check compatibility before tank-mixing with other agrochemicals, and avoid mixing with strongly alkaline products unless specifically recommended on the label.
• 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.
• As a single-site (DMI/triazole) fungicide, repeated, back-to-back use on the same crop/disease carries a resistance-development risk in fungal pathogen populations; avoid continuous season-long reliance on this product alone and rotate with a different mode-of-action group.
• Respect the waiting period (PHI) given in the table above before harvesting the treated crop.
• 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.