Herbicides are more likely to leach into groundwater when applied to sandy soils?

• A. True
• B. False

Answer: (A)

Herbicides are indeed more likely to leach into groundwater when applied to sandy soils due to the characteristics of these soil types. Sandy soils have larger particle sizes and a lower density, which leads to a greater permeability. This means that water—and any dissolved chemicals, including herbicides—can move through the soil more quickly and easily than in soils with finer particles, such as clay.

In contrast, finer-textured soils tend to have higher water retention capacities and can adsorb and hold onto chemical compounds more effectively, reducing the likelihood of those substances leaching into groundwater. Consequently, since sandy soils facilitate faster movement of water and potential contaminants, there is an increased risk for herbicides to reach groundwater sources, highlighting the importance of managing the use of these chemicals carefully in such soil types to protect water quality.