Abstract :
Easy to access and use, synthetic pesticides have been very effective in a significant number of cases. They
have widely contributed to the increase and regularity of production. However, in recent years, the systematic use of
these products is in question following the disturbances generated for all components of the environment. During the
spraying, no more than 90% of the quantities reach their targets, but they are diffused at ground level causing the
modification of its physicochemical properties and its biological activity. For that purpose, our work aimed at
verifying the impact of two pesticides used massively at the Algerian Northeast level. To do it, some characteristics
of the ground were determined. The microbial flora and the enzymes of fertilities were also estimated from the
fractions of ground. The obtained results show that the values of certain parameters exceed the prescribed standards
and in particular those of the electric conductivity and the total carbon. The rates of the analyzed enzymes are lower
than those of the witnesses. The isolated micro-flora is established by 60% of bacteria with an ascendancy of
Micrococcus and by 40% of mushrooms the most plentiful of which are Aspergillus.
Keyword :
Pesticides, Ground, Physicochemical Settings, Acid Phosphatase, Dehydrogenase