Chemical Class and Multi-Site Contact Action
Ziram belongs to the zinc dimethyldithiocarbamate chemical group (FRAC Group M03), functioning as a multi-site protective contact fungicide.
It interferes with fungal respiratory pathways by inactivating essential sulfhydryl (-SH) enzyme complexes, preventing spore germination and appressorium formation on plant cuticles.
- Active Molecule: Ziram 27% SC (Suspension Concentrate)
- Multi-Site Inhibition: Inactivates multiple cellular metabolic enzymes, making fungal resistance development virtually impossible
- Micronized SC Formulation: Ultra-fine particle suspension delivering uniform foliar coverage and superior rainfastness without leaving white powdery residues
- Zinc Nutritional Supplement: Supplies trace zinc nutrition that enhances foliage greenness and vegetative vigor
Target Crops and Fungal Blights
Cuman L is registered across horticultural orchards, commercial vegetables, and field cash crops.
It is a proven standard for controlling fruit rot anthracnose in chilli and apple scab in temperate fruit orchards.
- Chilli: Anthracnose fruit rot (dieback) and ripe rot (Colletotrichum capsici)
- Apple: Apple scab (Venturia inaequalis) and early foliar leaf spots
- Grapes: Downy mildew (Plasmopara viticola) and anthracnose
- Tomato & Potato: Early blight (Alternaria solani) and Septoria leaf spot
Application Guidelines and Safety Measures
Because Cuman L is a protective contact protectant, apply before fungal infection sets in or during weather cycles that encourage spore dispersion.
Ensure thorough coverage of both leaf surfaces and developing fruit clusters with high spray volumes.
- Foliar Dilution: Apply at 2 to 3 ml per liter of water (approx. 400 to 600 ml per acre in 200 liters of water)
- Spray Volume: Apply with 200 liters of water per acre (or 400 to 500 liters in orchards) using fine hollow-cone nozzles
- Tank Mixing: Compatible with most neutral insecticides and foliar nutrients; avoid mixing with strongly alkaline materials like Bordeaux mixture
Official source
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Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What is the technical ingredient in Syngenta Cuman L?
Cuman L contains ziram 27% SC, a protective dithiocarbamate contact fungicide.
Does Cuman L cure established fungal infections?
No, Cuman L is a protective contact fungicide that prevents fungal spores from germinating; it should be applied before infection sets in.
Why does Cuman L have a low risk of fungal resistance?
Because ziram attacks multiple biochemical cellular sites simultaneously, fungi cannot develop resistance through simple single-gene mutations.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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