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Information @ a Glance


  • The active ingredient, mancozeb, is a fungicide in a subclass of carbamate pesticides called dithiocarbamates.
  • Mancozeb is a grayish-yellow powder with a musty odor which is practically insoluble in water as well as most organic solvents.
  • It is a polymer of maneb combined with zinc.
  • Mancozeb is marketed by the trade names Dithane, Manzeb, Nemispot, and Manzane.
  • The primary concern with mancozeb is its spontaneous degradation to ethylenethiourea (ETU) in the presence of water and oxygen.
  • Mancozeb has a very low acute toxicity to mammals.


  • The physical modes of action of azoxystrobin, mancozeb, and metalaxyl were evaluated on grapevine seedlings using Plasmopara viticola as a model pathogen.
  • Two cohort mortality studies have mentioned the possibility of exposure to mancozeb, however, these cohorts had a very small number of cases and data on potential for exposure to mancozeb were lacking, making these studies less useful for an evaluation of mancozebís carcinogenic potential.
  • Seeds of both the species (common and Tartary buckwheat) were treated with three different fungicides, namely bavistin (carbendazim 50 WP) 0.1%, raxil (tebuconazole 2%) 0.1% and ridomil MZ 72 WP (metalaxyl 8%+mancozeb 64% WP) 0.25%.


  • Mancozeb is an ethylenebisdithiocarbamate fungicide used against a wide range of fungal diseases of field crops and fruits.
  • Mancozeb is used as a protective fungicide (to prevent fungal growth) and in foliar and seed treatments to control a wide range of pathogens in field crops, fruits, ornamentals and vegetables.
  • Synthetic pyrethroids such as azodrin, cypermethrin, deltamethrin, fenvalerate and mancozeb are used for seed treatment of cereal grains, cotton, tomatoes etc., and for the control of undesirable insects in order to increase agricultural production.
  • The seed treated with high concentrations of mancozeb was effective in reducing common scab disease caused by infected seed.


  • It has been reported that the uses with a combi-formulation (grapevines, tomatoes, potatoes) containing besides benthiavalicarb-isopropyl also mancozeb, the consumer risk assessment could not be completed, since no assessment with regard to mancozeb residues was carried out.
  • Mancozeb, maneb and propineb were reviewed in the periodic review programme and MRLs for dithiocarbamates were recommended.
  • Five eye irritation studies were conducted with mancozeb technical material where all five eye irritation studies clearly shows that the ocular irritation potential of mancozeb is low and that R36 labelling is not warranted.

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