The objective of this work was to evaluate the diffuse pollution regarding to the copper and to the zinc in the soil and in the runoff material due to the application of swine wastewater (ARS) in soil cultivated with soybean, under simulated rain condition. The experiment was installed in Toledo - PR, Brazil, and it was applied to the soil five rates of ARS (0; 50; 100; 150 and 200 m³ ha-1 in the cycle), in three replications for treatment, divided in six applications along the cycle of the soybean. Gutters were installed gutters to collect the runoff material and it was made six rain simulations during the experiment, resulting in six collections of the runoff. At the end of the soybean cycle, soil samples were collected in each one of the experimental plots, at three depths, for pH determination, cation exchangeable capacity, organic matter, copper and zinc. It was observed that there were copper and zinc losses through runoff and the largest copper concentrations were verified at 20-40 and 40-60 cm depths, while the zinc presented larger concentration in the top layer 0-20 cm and it increased in the other depths.
runoff; ions leaching; reuse of water
