What is a characteristic of ULV methods of pesticide application?

ULV, or Ultra-Low Volume, methods of pesticide application are specifically designed to efficiently deliver pesticides using minimal amounts of the active ingredient. This technique relies on using lower than normal application rates, which means that the concentration of the pesticide applied is significantly reduced compared to conventional methods.

The ULV technique is effective because it allows for better distribution and coverage of the pesticide over a larger area while minimizing the overall quantity needed. This can be especially beneficial for applications in sensitive environments where the reduction of chemical usage is desired. Lower application rates help to reduce the environmental impact and potential health risks associated with higher volumes of chemicals.

The other options relate to different aspects of pesticide application but do not accurately describe the ULV method. For instance, the use of higher concentrations would contradict the primary principle of ULV application. Similarly, although there may be risks associated with drift in any aerial or spray application, the focus of ULV is on efficiency with lower volumes rather than increased risks related to drift. Lastly, quick evaporation rates can vary depending on environmental conditions and the formulation, but they are not a defining characteristic of ULV application. Hence, the emphasis on lower application rates is what distinguishes ULV methods in pesticide application.