Which of the following herbicides would most likely benefit from soil incorporation?

Herbicides that are persistent and systemic in the soil are designed to remain active in the soil environment for an extended period. Soil incorporation can enhance their effectiveness by ensuring that the herbicide is evenly distributed within the soil profile, which increases the likelihood of root uptake by target plants. This method can also help to minimize degradation due to exposure to sunlight or lack of moisture on the surface.

In contrast, herbicides designed for immediate foliar effect act quickly on the leaves of plants and do not benefit from soil incorporation as their mode of action targets above-ground plant parts. Biodegradable herbicides are often formulated to break down quickly to minimize environmental impact and may not need soil incorporation for effectiveness. Contact herbicides work by affecting only the parts of the plant that they touch, making soil incorporation irrelevant, as they do not target the roots or act systemically. Therefore, persistent, systemic soil herbicides are the most suitable candidates for this technique.