The differences is soil hydraulic properties in sloping landstapes are believed to control the rate and movement of infiltrated water which influence the transport of herbicides. The impact of slope positions on transport of metribuzin Wassimulated using one-dimensional computer kodel "HYDRUS". Model simulations showed that metribuzin moved deeper at the top and back-slope positions than at the toe-slope position. After 360 days of simulation, the solution concentration of metribuzin below 40 em was almost zero at all slope positions. Metribuzin did not seem to be sensitive to dispersivity.
