Carbendazim 12% + Mancozeb 63% WP Fungicide Uses

Carbendazim 12% + Mancozeb 63% WP is a combination fungicide, registered for use in India under the Insecticides Act, 1968, that blends a systemic benzimidazole fungicide (Carbendazim) with a multi-site contact protectant from the dithiocarbamate class (Mancozeb) in a single wettable powder pack. It carries a broad label covering cereals (paddy), pulses and oilseeds (groundnut, soybean), vegetables (potato, chilli), fibre crops (cotton) and horticultural/plantation crops (tea, mango, grapes), used as a foliar spray against leaf spots, blights, mildews, rots and blast-type diseases. 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 fungicide dosage list for this exact Carbendazim 12% + Mancozeb 63% WP combination, cross-checked against TNAU's fungicide recommendations and manufacturer/retailer 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 this fungicide's approved crop-wise uses.

Mode of Action

This is a two-way (dual mode of action) fungicide combining two chemically distinct fungicides in one pack. Carbendazim is a systemic, translocated fungicide from the benzimidazole group that binds to beta-tubulin, a protein essential for building the mitotic spindle during fungal cell division; by blocking this single site, it halts mitosis in the pathogen and is absorbed and moved within the plant's vascular system, giving protection to new growth that emerges after spraying, plus curative action on early infections already present in the tissue. Mancozeb, by contrast, is a multi-site contact (protectant) fungicide from the dithiocarbamate (EBDC) class; it does not enter the plant but forms a protective film on the leaf/fruit surface, where it interferes with several different fungal enzyme systems at once (via its manganese and zinc components), preventing spore germination on contact. Combining a single-site systemic (Carbendazim) with a multi-site contact fungicide (Mancozeb) gives both curative reach inside the plant and a durable protective barrier on the surface, and is also a recognised resistance-management strategy, since pathogens find it far harder to develop resistance to a multi-site fungicide than to a single-site one.

Features & Benefits

• Dual mode of action — systemic (Carbendazim) plus contact/protectant (Mancozeb) — giving both curative activity on existing infection and a lasting protective film against new infection.
• Broad-spectrum control across leaf spots, blights, blast, mildews (downy and powdery), anthracnose and fruit/pod rots in cereals, pulses, oilseeds, vegetables and horticultural crops.
• Combining two different modes of action in one product is a practical resistance-management tool, reducing the selection pressure that repeated single-site fungicide use can put on a pathogen population.
• Wettable powder (WP) formulation that is easy to store, measure and tank-mix as part of a routine spray schedule.

Recommended Usage of Carbendazim 12% + Mancozeb 63% WP Fungicide

The table below gives the recommended dose and water volume per acre for each crop and target disease, converted from the official rate published in the CIB&RC's list of approved fungicide uses (Government of India) for this exact Carbendazim 12% + Mancozeb 63% WP combination, which is expressed per hectare (1 ha ≈ 2.47 acres). All rows below — Paddy, Groundnut, Tea, Mango, Grapes, Potato, Chilli, Cotton and Soybean — also agree closely with TNAU's fungicide recommendations and manufacturer/retailer label sources, cross-checked as secondary references. Always confirm the current product label before use.

Seed Treatment Use

Manufacturer label material also lists a seed-treatment use for this combination product: Groundnut at 2.5 g per kg seed, Soybean at 3.0 g per kg seed, and Pea at 3.0 g per kg seed, applied as a dry or slurry seed treatment before sowing — all three rates match the CIB official dosage list exactly.

Doses above are converted from the official rate published in the Government of India's CIB & RC (Central Insecticide Board & Registration Committee) official fungicide dosage list for this exact 12%+63% WP combination, 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 manufacturer/retailer product labels and TNAU's recommendations, cross-checked as secondary references. Always consult your local agricultural extension office for the latest guidance.

How to Use

1. Identify your crop and target disease from the table above, and confirm the correct dose per acre — dose and water volume vary by crop.
2. First make a thin paste of the required quantity of the wettable powder in a small amount of water, then dilute this gradually into the full spray tank volume while stirring continuously, so the powder disperses evenly without settling or clogging the nozzle.
3. Spray using a knapsack or power sprayer fitted with a flat-fan or hollow-cone nozzle for uniform leaf/fruit coverage, preferably during the early morning or late evening; avoid spraying in hot, windy conditions or when rain is expected within a few hours.
4. For tree/orchard crops (tea, mango, grapes) where dose is given as a percentage solution, prepare the spray at the stated concentration and apply to full canopy coverage rather than a fixed per-acre volume.
5. Repeat sprays at 10–15 day intervals if disease pressure continues or as advised by local agricultural extension, and always respect the waiting period (PHI) 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.
• Avoid tank-mixing with strongly alkaline materials (such as lime or Bordeaux mixture) or copper-based fungicides, which can reduce stability and effectiveness; always do a small jar-compatibility test before mixing with an unfamiliar product.
• Because this product contains Carbendazim, a single-site (benzimidazole) fungicide, repeated back-to-back use on the same crop/disease carries a real resistance-development risk in several fungal pathogens; avoid continuous use and rotate with fungicides from a different mode-of-action group as part of a resistance-management program.
• 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.
• Respect the waiting period (PHI) given in the table above before harvesting the treated crop, and follow your local agricultural extension advice where a specific crop is not listed.
• 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.