Chemical composition and multi-site biochemical mode of action
- Technical content: Mancozeb 75% WP (coordination product of zinc ion and manganese ethylene bisdithiocarbamate, FRAC Group M03).
- Multi-site contact activity: Inactivates sulfhydryl (-SH) groups of amino acids and enzymes in fungal cells, halting energy production and cellular respiration.
- Zero resistance risk: Because it targets multiple fungal metabolic sites simultaneously, fungal pathogens cannot easily develop resistance to Mancozeb.
- Micronutrient supplementation: Supplies bio-available manganese and zinc to crops, stimulating chlorophyll synthesis and greener foliage.
Target fungal diseases and broad crop portfolio
- Potato and Tomato: Controls Early Blight (Alternaria solani) and Late Blight (Phytophthora infestans).
- Rice (Paddy): Protects against brown spot (Helminthosporium oryzae) and blast.
- Groundnut: Highly effective against Tikka disease (early and late leaf spots).
- Grapes and Apples: Manages downy mildew, anthracnose, and apple scab.
- Chilli and Onion: Controls fruit rot, dieback, purple blotch, and leaf blight.
Application techniques, spraying schedule, and safety
- Preventive application: Apply prior to fungal infection or as soon as weather conditions favor disease emergence, repeating every 7 to 10 days.
- Water volume: Use 150 to 200 litres of water per acre for field crops and 400 to 500 litres per acre for fruit orchards.
- Tank-mix partner: Ideal mixing partner for systemic single-site fungicides (like triazoles or strobilurins) to expand control and delay resistance.
- Safety measures: Wear protective face mask, goggles, and gloves; observe CIB&RC approved 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 (CIBRC) ↗Related on KisanPe
Common questions
What is the active content of M-45 fungicide?
M-45 fungicide contains Mancozeb 75% WP, a dithiocarbamate contact fungicide.
Why is Mancozeb considered a multi-site fungicide?
It interferes with multiple cellular enzymes and metabolic pathways in fungal cells, making resistance development virtually impossible.
Does M-45 fungicide provide nutrients to the plant?
Yes, it contains coordinated manganese and zinc ions that provide nutritional benefits and greener crop foliage.
Is M-45 a systemic or contact fungicide?
M-45 is a contact protective fungicide that forms a defensive chemical barrier on the surface of plant tissues.
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.