The challenge for precision spraying

contamination of water, soil and air by pesticides, agricultural practices are increasingly being suspected. Inadequate practices can indeed induce point or diffuse pollution. The point source pollution is easier to identify and also to solve by implementing best practices, technologies or infrastructures. Diffuse pollution is more difficult to analyze and to reduce because of the difficulty in defining its exact source, Depending furthermore of each geographical and technical situation. Given a situation, the level of contamination is the result of a set of complex mechanisms that depend on many stakeholders, weather and bioclimatic events. It is even more complex to evaluate due to the many compounds and metabolites which are involved. This paper deals with the knowledge on the levels of losses, their technical causes, the possible improvements and the economic determinants of precision farming in order to develop efficient mitigation measures.