What type of herbicide is generally safer for use near water bodies?

Selective herbicides are designed to target specific types of plants while leaving others unharmed. This specificity makes them generally safer for use near water bodies, as they minimize the impact on non-target species, including aquatic plants and organisms. Selective herbicides usually affect broadleaf weeds or grass weeds without damaging desired turf grasses or ornamental plants, reducing the risk of unintended consequences in sensitive environments like lakes, rivers, and ponds.

In contrast, non-selective herbicides kill all vegetation they contact, which poses a higher risk of harming desirable plants or aquatic life. Desiccants are used to dry out plant material, and while they may target a specific weed, their aggressive mode of action can also adversely affect non-target species. Pre-emergence herbicides prevent the germination of seeds but may also leach into water bodies, especially if not used carefully, potentially impacting water quality and the organisms that inhabit these environments. Thus, the selective nature of selective herbicides makes them the safer choice near water bodies.