Active ingredient and multi-site mode of action
Copper hydroxide releases cupric ions (Cu2+) gradually in the presence of leaf surface moisture. The absorbed cupric ions bind to and denature fungal and bacterial proteins and enzymes (FRAC Group M01), causing multi-site metabolic failure. Pathogens cannot develop resistance to this broad-spectrum physical-chemical mode of action.
- Active constituent: Copper Hydroxide 53.8% DF (dry flowable) or 46.1% WG
- Chemical family: Inorganic multi-site contact protectant (FRAC Group M01)
- Dual efficacy: Effective against both fungal spore germination and bacterial pathogens
Target diseases in fruits and plantation crops
- Pomegranate: Bacterial blight or oily spot (Xanthomonas axonopodis pv. punicae).
- Grapes: Downy mildew (Plasmopara viticola) and anthracnose.
- Citrus: Citrus canker and melanose.
- Tomato and chili: Bacterial spot, early blight, and anthracnose.
Application timing and phytotoxicity precautions
Apply preventively before disease symptoms proliferate. Avoid tank-mixing with strongly acidic chemicals, organophosphates, or fosetyl-Al, which can trigger rapid copper solubilization and cause severe foliage scorching (phytotoxicity). Always observe CIBRC approved label dosages and pre-harvest intervals.
Official source
Check the latest rules, benefits and forms here. KisanPe is an independent platform and is not a government website.
Central Insecticides Board & Registration Committee ↗Related on KisanPe
Common questions
What is the active ingredient in Kocide fungicide?
Kocide contains copper hydroxide in dry flowable (DF) or water dispersible granule (WG) formulations.
Does Kocide manage bacterial crop diseases?
Yes, its copper ions have strong bactericidal activity, making it standard for controlling bacterial spot and citrus canker.
Why should copper fungicides not be mixed with acidic chemicals?
Acidic solutions dissolve copper too quickly, causing excessive soluble copper concentrations that scorch plant foliage.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
More Crop Protection & Pesticides guides
Ask Sakhi AI in your language, check live mandi prices or plan a loan with KisanPe tools.