Active chemistry and multi-site protective action
Zineb contains zinc ethylenebis(dithiocarbamate), classified under FRAC Group M03.
Key technical properties:
- Active composition: Zineb 75% Wettable Powder (WP).
- Multi-site enzymatic inhibition: Deactivates critical sulphydryl (-SH) groups in fungal respiratory and metabolic enzymes, preventing spore germination.
- Contact surface protection: Creates a durable chemical film across leaf and stem surfaces, halting initial fungal penetration.
- Zinc nutritional boost: Releases elemental zinc upon decomposition on foliage, stimulating chlorophyll synthesis and vegetative recovery.
- Resistance safety: Because of its broad multi-site mode of action, pathogens have a very low likelihood of developing resistance.
Registered crops and target fungal diseases
Zineb is approved by the Central Insecticides Board for preventative control of numerous fungal diseases:
Primary disease spectrum:
- Paddy (Rice): Blast (Magnaporthe oryzae) and brown leaf spot.
- Potato and Tomato: Early blight (Alternaria solani) and late blight (Phytophthora infestans).
- Grapes: Downy mildew and anthracnose leaf infection.
- Pome and stone fruits (Apple, Pear): Scab and rust diseases.
- Tobacco and vegetables: Anthracnose, damping-off, and fungal leaf spots.
Spray preparation and application guidelines
Apply Zineb preventatively before visible disease outbreak or upon receiving regional weather alerts for humid conditions. Mix the wettable powder thoroughly in a separate container to create a smooth pre-slurry before adding to the spray tank. Ensure uniform foliage wetting, use clean protective gear during spraying, and observe recommended pre-harvest waiting periods.
Official source
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Central Insecticides Board & Registration Committee (CIBRC) ↗Related on KisanPe
Common questions
What is the active chemical ingredient in Zineb fungicide?
Zineb contains zinc ethylenebis(dithiocarbamate) formulated as a 75% Wettable Powder (WP).
How does Zineb protect plants against fungal attack?
It acts as a multi-site contact protectant, forming a protective barrier that prevents fungal spores from germinating and entering leaf tissue.
Does Zineb supply any micronutrients to the crop?
Yes, it contains bioavailable zinc, which helps alleviate mild zinc deficiency and supports leaf greening.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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