What is one of the key climate factors that must be considered during herbicide application?

Humidity is a crucial climate factor to consider during herbicide application because it can significantly influence both the efficacy of the herbicide and its potential environmental impact. High humidity can enhance the absorption of herbicides by plants and reduce the volatility of some products, which helps in achieving the desired level of weed control. Conversely, low humidity can lead to increased evaporation, reducing the time the herbicide remains on the target plant and potentially leading to less effective control.

Additionally, humidity levels can affect the likelihood of drift, which is when herbicides move away from the target application area, potentially harming non-target plants or crops. Careful monitoring of humidity conditions at the time of application can therefore help ensure that herbicides perform effectively while minimizing risks to surrounding vegetation and ecosystems.