What is a common control measure recommended for herbicide application on grasslands?

Application with low wind speeds is a common control measure recommended for herbicide application on grasslands. This practice is crucial for minimizing drift, which occurs when herbicide particles or vapor are carried away from the target area by wind. Applying herbicides during low wind conditions helps ensure that the product remains where it is intended, enhancing its effectiveness while reducing the risk of unintended damage to nearby crops, plants, or natural areas. Additionally, low wind speeds help improve accuracy in targeting the intended vegetation, leading to better control of weeds with minimal off-target impacts.

In contrast, applying herbicides during rainstorms would likely lead to runoff and reduced effectiveness, making it a less desirable practice. High temperatures can increase evaporation rates and volatility of some herbicides, which may also increase the potential for drift. Meanwhile, night applications may be considered for specific situations, but they do not inherently provide the same advantages regarding wind conditions and accuracy as low wind speed applications.