Zineb 75% WP Fungicide Uses

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    Zineb 75% WP is a contact, protective fungicide from the dithiocarbamate chemical group, registered for use in India under the Insecticides Act, 1968, formulated as a wettable powder (WP) for foliar spraying. It is registered for the control of blights, blast, rust, leaf spots, downy mildew, anthracnose, scab, fruit rot and related diseases across cereals (jowar, paddy, wheat, maize, ragi), tobacco, vegetables (onion, potato, tomato, chilli, brinjal, cucurbits, cauliflower), cumin and fruit crops (apple, citrus, cherries, grapes, guava). This page lists its mode of action, key benefits and the recommended dosage as per the Central Insecticides Board & Registration Committee (CIB&RC) official list of approved fungicide uses (Government of India).

    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.

    Crop Other Names What You'll See in the Field
    Jowar (Sorghum) — Red leaf spot, Leaf spot, Leaf blight लाल पत्ती धब्बा (Lal Patti Dhabba), पत्ती धब्बा (Patti Dhabba), पत्ती झुलसा (Patti Jhulsa) Small reddish to purple spots on the leaves that enlarge and merge (red leaf spot); round to oval brown spots on leaves (leaf spot); long, elliptical, greyish-tan lesions with darker margins that join up and dry the leaves (leaf blight).
    Rice (Paddy) — Blast झोंका रोग (Jhonka Rog) Spindle- or eye-shaped spots on leaves with grey centres and brown margins; at the neck and nodes the tissue turns black, the neck breaks and the panicle becomes white and chaffy.
    Wheat — Rust, Blight रतुआ/गेरुई (Ratua/Gerui), झुलसा रोग (Jhulsa Rog) Rust: yellow, orange or dark brown powdery pustules on leaves and stems that rub off on the fingers; blight: irregular brown, dry patches on the leaves, usually starting on lower leaves and leaf tips.
    Maize — Leaf blight पत्ती झुलसा (Patti Jhulsa) Long, cigar-shaped, greyish-green to tan lesions on the leaves that join up, giving the crop a scorched, dried look.
    Ragi (Finger millet) — Blast झोंका रोग (Jhonka Rog) Eye-shaped spots with grey centres on leaves; the neck turns black and the fingers (earheads) dry up, turn dark and remain chaffy.
    Tobacco — Leaf spot पत्ती धब्बा (Patti Dhabba) Small, round brown spots on the leaves, often with a paler centre, which increase in number on older leaves and lower leaf quality.
    Onion — Downy mildew, Blight मृदु रोमिल आसिता (Mridu Romil Aasita), झुलसा रोग (Jhulsa Rog) Downy mildew: pale, elongated patches on the leaves with a greyish-violet fuzzy growth in humid mornings; leaves bend over and collapse. Blight: small whitish or purplish sunken spots on the leaves that enlarge into brown patches, with leaf tips drying back.
    Potato — Early blight, Late blight अगेती व पछेती झुलसा रोग (Jhulsa Rog) Early blight shows as dark brown spots with concentric rings ("target board") on older leaves that enlarge and cause yellowing and leaf drop; late blight appears as irregular, water-soaked, greyish-brown patches on leaves and stems that spread rapidly in cool, humid weather, with a white fungal growth on the underside in the early morning.
    Tomato — Early blight, Late blight, Grey leaf mould अगेती व पछेती झुलसा रोग (Jhulsa Rog), धूसर पत्ती फफूंद Early blight shows as dark brown spots with concentric rings ("target board") on older leaves that enlarge and cause yellowing and leaf drop; late blight appears as irregular, water-soaked, greyish-brown patches on leaves and stems that spread rapidly in cool, humid weather, with a white fungal growth on the underside in the early morning. Grey leaf mould shows as pale yellow patches on the upper leaf surface with an olive-grey, velvety mould on the underside.
    Chilli — Fruit rot, Leaf spot फल सड़न (Phal Sadan), पत्ती धब्बा (Patti Dhabba) Sunken, water-soaked spots on ripening fruit that enlarge, turn dark and may show concentric rings of spores in humid weather; leaf spot appears as small, round brown spots with a pale centre on the leaves, which yellow and drop.
    Brinjal — Blight झुलसा रोग (Jhulsa Rog) Brown spots, often with concentric rings, on the leaves that enlarge and merge; affected leaves yellow, dry and drop.
    Cucurbits — Downy mildew, Anthracnose, Leaf spot मृदु रोमिल आसिता (Mridu Romil Aasita), एन्थ्रेक्नोज़ (Anthracnose), पत्ती धब्बा (Patti Dhabba) Angular, pale yellow patches on the upper leaf surface, bounded by the veins, with a greyish-purple downy fungal growth on the corresponding underside in humid weather; patches turn brown and the leaves dry up. Anthracnose causes round, brown to black spots on leaves and sunken, dark spots on fruits; leaf spot shows as small brown spots scattered on the leaves.
    Cauliflower — Leaf spot पत्ती धब्बा (Patti Dhabba) Round, dark brown to black spots with concentric rings on the leaves; in severe cases dark spots also appear on the curd.
    Cumin — Early blight झुलसा रोग (Jhulsa Rog) Small brownish to purplish spots on the leaves and stems that soon turn black; plant tips droop and dry, and seeds are poorly formed.
    Apple — Scab, Black rot स्कैब/पपड़ी रोग (Scab), काला सड़न (Kala Sadan) Scab: olive-green, velvety spots on the leaves that turn dark; fruits develop dark, corky, scabby spots and may crack. Black rot: purple-bordered "frog-eye" spots on leaves and a firm rot on fruit with concentric rings that turns black and shrivels.
    Citrus — Greasy spot चिकना धब्बा (Chikna Dhabba) Yellowish spots on the underside of leaves that develop into raised, oily-looking, dark brown to black blotches; heavily affected leaves drop early.
    Cherries — Leaf spot पत्ती धब्बा (Patti Dhabba) Small purple-red spots on the leaves whose centres may dry and fall out, leaving shot holes; affected leaves turn yellow and drop early.
    Grapes — Downy mildew मृदु रोमिल आसिता (Mridu Romil Aasita) Pale yellow, oily patches on the upper leaf surface with a white, downy fungal growth on the corresponding underside; affected bunches shrivel and turn brown.
    Guava — Fruit rot फल सड़न (Phal Sadan) Circular, sunken, dark brown to black spots on ripening fruits that enlarge; the fruit softens and rots.

    Mode of Action

    Zineb is a dithiocarbamate fungicide (FRAC Group M03, multi-site contact activity). On the leaf surface it releases compounds that react with sulphur-containing (thiol) groups of many different enzymes inside fungal cells, disrupting several processes at once, including respiration. This stops fungal spores from germinating and infecting the plant. It is a non-systemic, protective fungicide: it stays on the plant surface and does not cure infections already established inside the tissue, so it works best when sprayed before or at the very start of disease. Because it acts on many sites at once, the risk of fungi developing resistance to it is low.

    Features & Benefits

    • Broad-spectrum protective action against blights, blast, rust, leaf spots, downy mildew, anthracnose, scab and fruit rot.
    • Registered on 19 crops — cereals, tobacco, vegetables, cumin and fruit crops.
    • Multi-site mode of action (FRAC M03) with low resistance risk — a useful tank-mix or rotation partner with single-site systemic fungicides.
    • Wettable powder (WP) formulation that disperses in water for uniform spray coverage.

    Recommended Usage of Zineb 75% WP Fungicide

    The table below gives the recommended dose, water volume and waiting period per acre, converted from the CIB&RC-registered per-hectare rate — see the note below the table for conversion details. Always confirm against the current product label before use.

    Crop Target Disease Dose per Acre Water Volume per Acre Waiting Period (PHI)
    Jowar (Sorghum) Red leaf spot, Leaf spot, Leaf blight ~600–800 g ~300–400 litres Not stated by CIB
    Rice (Paddy) Blast ~600–800 g ~300–400 litres Not stated by CIB
    Wheat Rust, Blight ~600–800 g ~300–400 litres Not stated by CIB
    Maize Leaf blight ~600–800 g ~300–400 litres Not stated by CIB
    Ragi (Finger millet) Blast ~600–800 g ~300–400 litres Not stated by CIB
    Tobacco Leaf spot ~600–800 g ~300–400 litres Not stated by CIB
    Onion Downy mildew, Blight ~600–800 g ~300–400 litres Not stated by CIB
    Potato Early blight, Late blight ~600–800 g ~300–400 litres Not stated by CIB
    Tomato Early blight, Late blight, Grey leaf mould ~600–800 g ~300–400 litres Not stated by CIB
    Chilli Fruit rot, Leaf spot ~600–800 g ~300–400 litres Not stated by CIB
    Brinjal Blight ~600–800 g ~300–400 litres Not stated by CIB
    Cucurbits Downy mildew, Anthracnose, Leaf spot ~600–800 g ~300–400 litres Not stated by CIB
    Cauliflower Leaf spot ~600–800 g ~300–400 litres Not stated by CIB
    Cumin Early blight ~600–800 g ~300–400 litres Not stated by CIB
    Apple Scab, Black rot ~600–800 g ~300–400 litres Not stated by CIB
    Citrus Greasy spot ~600–800 g ~300–400 litres Not stated by CIB
    Cherries Leaf spot ~600–800 g ~300–400 litres Not stated by CIB
    Grapes Downy mildew ~600–800 g ~300–400 litres Not stated by CIB
    Guava Fruit rot ~600–800 g ~300–400 litres Not stated by CIB

    Figures above are converted from the CIB&RC-registered per-hectare rate (1 ha ≈ 2.47 acres), which is the same for every crop and disease listed: 1.125–1.5 kg a.i./ha, 1.5–2 kg formulation/ha, 750–1000 L water/ha. The CIB&RC list does not state a waiting period for Zineb 75% WP. Always confirm the current dose on your specific product's label before use.

    How to Use

    1. Identify your crop and disease from the symptom guide above and confirm the dose from the table.
    2. Make a smooth paste of the measured powder in a little water first, then add it to the spray tank and top up to the full volume, stirring well before and during spraying.
    3. Spray uniformly to cover the whole plant, including both surfaces of the leaves, stems and fruits.
    4. Start spraying as a preventive measure when weather is favourable for disease (cloudy, humid, wet) or at the very first symptoms, since zineb protects but does not cure established infections.
    5. Repeat sprays at intervals advised by your local agricultural extension office if disease pressure continues, and avoid spraying if rain is expected within a few hours.

    Precautions & Safety

    • Wear appropriate PPE — mask/respirator, gloves, goggles and full-sleeved clothing — while mixing and spraying, and avoid inhaling the powder or spray mist.
    • Follow the recommended dose strictly; do not mix with other pesticides unless specifically recommended.
    • The CIB&RC list does not state a waiting period (PHI) for zineb 75% WP — follow the waiting period on the current product label before harvesting the treated crop.
    • Zineb can irritate the skin, eyes and respiratory tract; avoid skin contact and do not eat, drink or smoke while handling it.
    • Do not let spray wash or field water reach ponds, fish tanks, streams or drinking-water sources.
    • 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.
    • Wash hands, face and any exposed skin thoroughly with soap and water after 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.

    Disclaimer

    The dosage and usage information on this page is based on the Central Insecticides Board & Registration Committee (CIB&RC), Government of India, document "Major Uses of Pesticides" (registered under the Insecticides Act, 1968; updated up to 31.03.2026). As stated in that document, it has been compiled on the basis of available information for guidance and not for legal purposes. Likewise, this page is for general information and guidance only; it is not intended for any legal purpose and has no legal validity.

    Before using any product, always read and follow the instructions on its label and leaflet. If in doubt, consult your local agricultural extension officer.

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