Chemical properties and multi-site contact action
Copper Oxychloride acts through non-specific multi-site enzyme denaturation.
- Multi-Site Inhibitor (FRAC Group M01): Copper ions (Cu2+) are absorbed by germinating fungal spores, disrupting vital cellular enzyme complexes.
- Protective Surface Barrier: Forms an insoluble protective film on leaf surfaces; effective only when applied preventively before pathogens penetrate tissues.
- Bactericidal Efficacy: In addition to fungi, copper kills plant pathogenic bacteria (Xanthomonas, Pseudomonas) on contact.
- Zero Resistance Risk: Because it acts on multiple cellular sites simultaneously, fungal pathogens cannot develop genetic resistance to copper.
Approved crops and target disease spectrum
Registered under CIBRC label directions across major horticultural and plantation crops.
- Potato & Tomato: Early blight (Alternaria solani) and late blight (Phytophthora infestans).
- Citrus: Citrus canker (Xanthomonas axonopodis) and gummosis.
- Grapes: Downy mildew and anthracnose (bird's eye spot).
- Chilli: Fruit rot, anthracnose (die-back), and bacterial leaf spot.
- Paddy (Rice): False smut and bacterial leaf blight (BLB).
- Coffee & Cardamom: Black rot and rust complexes in plantation hills.
Preparation, spray technique, and precautions
Correct mixing protocols prevent sprayer clogging and plant phytotoxicity.
- Premixing: Make a smooth thin paste of Blitox powder with a small volume of water before adding to the full spray tank.
- Canopy Coverage: Ensure thorough coverage of both upper and lower leaf surfaces, fruit clusters, and stems using clean water.
- Incompatibility: Do not mix with acid-forming agrochemicals, organophosphates, or dithiocarbamates without prior testing; avoid mixing with lime sulfur.
- Phytotoxicity: Avoid spraying during extreme midday heat or on copper-sensitive fruit varieties during early bloom.
- Observe the approved pre-harvest interval (PHI) printed on the product packaging.
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 (CIBRC) ↗Related on KisanPe
Common questions
What is the active chemical molecule in Blitox?
Blitox contains Copper Oxychloride 50% WP (Wettable Powder), equivalent to 50% metallic copper.
Can Blitox control bacterial diseases like citrus canker?
Yes, Copper Oxychloride is a proven bactericide that destroys bacterial cells on contact, making it a standard treatment for citrus canker and bacterial leaf spots.
Can Blitox cure an infection that has already penetrated inside the leaf?
No, Blitox is a protective contact fungicide that prevents new infections; it does not move systemically inside plant tissues to cure deep established infections.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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