Captan 70% + Hexaconazole 5% WP Fungicide Uses

Captan 70% + Hexaconazole 5% WP is a combination fungicide registered for use in India under the Insecticides Act, 1968 and sold under various trade names including Powerfull and Hukoomat. It pairs a multi-site contact fungicide (captan) with a systemic triazole (hexaconazole), and carries label recommendations across vegetables (chilli, potato, tomato), pulses (black gram) and cereals (rice/paddy), as well as spice crops (cumin), used as a foliar spray against fruit rot, blight, powdery mildew, rust and sheath blight/stem rot. This combination remains legally registered and sold in India; always confirm the current pack label before use. This page lists its mode of action, key benefits and the recommended crop-wise dosage as per manufacturer labels.

Mode of Action

This product combines two fungicides that work in different ways. Captan is a multi-site, contact (protectant) fungicide from the phthalimide/dicarboximide group — rather than blocking one specific enzyme, it reacts with and disrupts several different enzyme systems inside fungal spores and cells at once, which gives it broad-spectrum protective activity and a very low risk of the fungus developing resistance to it. Because it is not absorbed into the plant, captan remains on the leaf and fruit surface, stopping spores from germinating before infection begins. Hexaconazole, in contrast, is a systemic triazole (DMI) fungicide that inhibits the C14-demethylase enzyme needed to build ergosterol in fungal cell membranes, giving it both preventive and curative activity from within the plant. Together, the surface protection from captan and the systemic curative action from hexaconazole give this combination good rain-fastness and control duration, along with preventive and curative activity in a single spray.

Features & Benefits

• Dual contact-plus-systemic action, combining the low resistance-risk protection of captan with the systemic curative activity of hexaconazole.
• Broad-spectrum control of fruit rot, anthracnose, blight, powdery mildew, rust and sheath blight/stem rot across vegetable, pulse, cereal and spice crops.
• Good rain-fastness once dry on the leaf surface, giving longer control duration between sprays.
• Compatible with several other commonly used pesticides, useful for combination spray programs where advised.

Recommended Usage of Captan 70% + Hexaconazole 5% WP Fungicide

The table below gives the commonly recommended dose and water volume per acre for each crop and target disease, as listed on manufacturer labels for this active ingredient combination. Always spray in the recommended water volume for uniform coverage, and confirm against the current product label before use.

Doses above are the commonly listed formulation-label rates for Captan 70% + Hexaconazole 5% WP, rounded to practical spray-tank quantities. Always confirm the current pack label/CIB registration and consult your local agricultural extension office for the latest guidance before use and before harvest.

How to Use

1. Identify your crop and target disease from the table above, and confirm the correct dose per acre for that crop.
2. Make a thin paste of the required quantity in a small amount of water, then dilute this gradually into the full spray tank volume while stirring continuously so the wettable powder disperses evenly.
3. Spray using a knapsack or power sprayer fitted with a flat-fan or hollow-cone nozzle for uniform leaf and fruit coverage, preferably during the early morning or late evening.
4. Avoid spraying in hot, windy conditions or when rain is expected within a few hours, as this reduces efficacy and increases the risk of drift or wash-off.
5. Repeat sprays at 10–15 day intervals if disease pressure continues, and always respect the waiting period before harvest.

Precautions & Safety

• Wear appropriate PPE — mask/respirator, gloves, goggles and full-sleeved clothing — while mixing and spraying, and avoid inhaling the wettable powder dust while opening the pack.
• Do a small jar-compatibility test before tank-mixing with other agrochemicals, and avoid mixing with strongly alkaline materials such as lime or Bordeaux mixture.
• Store in the original, tightly closed container in a cool, dry place away from direct sunlight, food, feed and out of reach of children and livestock.
• Respect the waiting period (PHI) listed for each crop above before harvesting, and follow your local agricultural extension advice for the latest guidance.
• Although captan's multi-site action carries low resistance risk, hexaconazole (a triazole) is single-site; avoid repeated, back-to-back applications of this product alone across a season, and rotate with a fungicide from a different mode-of-action group as part of a resistance-management program.
• 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.