What do nozzles control during pesticide application?

The correct choice emphasizes the crucial role that nozzles play in pesticide application. Nozzles are designed to manage the volume of pesticide being released, ensuring that the correct amount is applied to the target area. Additionally, they help achieve uniform coverage, which is vital for effective pest control. This uniformity ensures that all areas receive the same level of pesticide application, minimizing the chances of pest resistance and enhancing the overall effectiveness of the treatment.

Completeness of coverage is also a key factor, as it ensures that all components of the target area are treated adequately. If some areas are not covered effectively, it can lead to unsatisfactory results and even allow pests to proliferate in those untreated zones.

Other options mentioned in the question do not relate directly to the functions of nozzles. For instance, nozzles do not control the temperature of the pesticide, as this is typically managed through storage conditions and environmental factors. The color of the spray is irrelevant to the action of the pesticide and does not influence its effectiveness. Time of application relates more to strategic planning rather than the mechanical function of the nozzles themselves. Thus, focusing on volume, uniformity, and completeness captures the essential elements that nozzles regulate during pesticide application.