Runoff refers to

Runoff refers to

• A. Pesticide absorption
• B. Evaporation
• C. The movement of water and associated materials over the top of the soil or impervious surfaces
• D. Soil percolation

Answer: (C)

Runoff is the movement of water and anything dissolved or suspended on the surface as it flows over the top of the soil or impervious surfaces after rain or irrigation. It happens when water can’t infiltrate the soil fast enough, so it travels across the ground, potentially carrying pesticides, sediments, and nutrients to streams, rivers, or lakes. This is why pesticide management considers runoff risk— applications on the surface can be carried into water bodies if conditions promote surface flow. Pesticide absorption refers to pesticides sticking to soil or plant surfaces rather than moving with surface water, evaporation is water turning into vapor and leaving the surface, and soil percolation is water moving downward into the soil, not across the surface.

Runoff is the movement of water and anything dissolved or suspended on the surface as it flows over the top of the soil or impervious surfaces after rain or irrigation. It happens when water can’t infiltrate the soil fast enough, so it travels across the ground, potentially carrying pesticides, sediments, and nutrients to streams, rivers, or lakes. This is why pesticide management considers runoff risk— applications on the surface can be carried into water bodies if conditions promote surface flow. Pesticide absorption refers to pesticides sticking to soil or plant surfaces rather than moving with surface water, evaporation is water turning into vapor and leaving the surface, and soil percolation is water moving downward into the soil, not across the surface.