ABSTRACT
Fumigants Fumigants are compounds with a biocidal effect that extends over all soil inhabitants. They may be either liquid or solid in form but volatilize very rapidly after application. Their volatility is often so high that it is imperative to cover the soil with plastic immediately after treatment to preclude too rapid dispersion of the into the atmosphere. This precaution is all the more necessary as all fumigants are extremely toxic. Thus, methyl bromide and chloropicrin can be applied only by specially authorised agents. Their very large spectrum of action, which includes weeds, too often to consideration of fumigants as an absolute weapon whose effectiveness overshadows prior reflection on the for which disinfection was deemed necessary. Fumigants often represent an solution and would probably be used more often if their high price did not limit usage to highly profitable cultivations.
