VALE, R. L.; http://lattes.cnpq.br/0988617219922390; VALE, Ricardo Lins.
Résumé:
The importance of pesticides for the current model of agricultural development is
indisputable, since they are part of the basic inputs. However, it is very important that
they are properly used for the preservation not only of crops but also for all its natural
resources, especially soil and water, besides the health of farmers and consumers.
This work was carried out in the surrounding region of São Gonçalo Reservoir - PB
and aims to assess the potential for contamination of surface and groundwater by
pesticides applied to waters irrigated agriculture in the region, based on the methods
Method screening of U.S. Environmental Protection Agency (Environmental
Protection Agency, EPA), Vulnerability Index Groundwater (Groundwater Ubiquity
Score, GUS) and Method of GOSS. Through the comparison between the methods
was observed that 35.3% of the active ingredients used in the crops of the study area
have a high potential for groundwater contamination by comparing the screening
Method of the EPA and GUS Index. Method by GOSS was diagnosed that 23.5% of
agrochemicals has high potential for contamination of surface water by the
associated sediment transport and 52.9% to contaminate surface water dissolved in
water transport. Overall 76.5% of pesticides applied in the study area are considered
high potential for contamination of surface and groundwater, therefore necessary
monitoring and control of the waters of the reservoir watershed São Gonçalo - PB by
environmental agencies and well as the awareness of farmers by the excessive
consumption of pesticides.