What is likely the main benefit of soil incorporation of herbicides?

The main benefit of soil incorporation of herbicides is that it increases the duration of herbicide effectiveness. When herbicides are incorporated into the soil, they are placed in closer proximity to the target weed's root system. This positioning allows for a slower and more sustained release of the active ingredient, leading to prolonged weed control. The herbicide can persist within the soil environment, which helps maintain its efficacy over an extended period, reducing the need for multiple applications.

This method also minimizes the potential for degradation from environmental factors such as sunlight and rainfall, which can occur with surface applications. By creating a more stable application environment, the incorporated herbicides can provide a longer window of effectiveness compared to those that are not incorporated.