Which of the following is a common cultural practice that can complement herbicide use?

Mowing is indeed a common cultural practice that can effectively complement herbicide use. This practice helps manage unwanted vegetation by reducing the height and density of target plants, potentially decreasing their ability to compete with desirable species. By cutting down weeds before they flower and set seed, mowing can effectively limit their proliferation and reduce the need for herbicides in the long run.

In addition to its immediate physical effects, mowing can also create a more favorable environment for desirable plants to thrive by reducing competition. This support can enhance the overall efficacy of herbicides when they are applied, as less competition allows for improved absorption and effectiveness of the chemicals on the target weeds.

While fertilizing can enhance plant growth and applying pesticides can address a broader range of pest issues, neither directly targets the management of weed populations in the same manner as mowing does. Therefore, mowing stands out as a complementary cultural practice to herbicide application.