What should be done if herbicide is over-applied to turfgrass?

If herbicide is over-applied to turfgrass, watering the area with one inch of water assists in diluting the concentration of the herbicide present in the soil and on the grass blades. This practice can help mitigate potential damage to the turfgrass, as it encourages leaching and reduces the herbicide's contact time with the plant tissue, which is critical in limiting phytotoxicity. Proper irrigation after herbicide application is often recommended, especially in cases of over-application, to effectively manage the potential negative impacts on grass health.

In the context of the other options, while igniting the area is not a valid or safe method of addressing herbicide issues, merely delaying further applications does not directly address the immediate concerns of over-application. Removing the turfgrass entirely can be a drastic and unnecessary measure, especially when effective remediation can be achieved through proper watering techniques. Thus, applying water is the most practical and immediate solution to reduce the harmful effects of the herbicide on the turf.