A substance which can kill or prevent the growth of fungi. Many fungicides are highly chlorinated substances which remain active for long periods. While stable enough for most normal use, care should be taken that they are used in low concentrations. While the breakdown of fungicides is normally slow, if they are accelerated by contact with some metals they can produce hydrochloric acid. See also Pesticide.
A pesticide that is used to kill fungi in plants, stored products or soil, or to inhibit their development.(Chemicals that kill fungi for medical or veterinary applications are termed "antifungal agents"; they are classed as pharmaceuticals and so are not included in the Compendium.)