Indiana Pesticide Applicator Core Practice Exam

Which factor directly affects the application rate of pesticides?

1. Application speed

2. Ambient temperature

3. Wind speed

4. Humidity levels

The correct answer is: Application speed

The application speed directly affects the application rate of pesticides because it determines how quickly the pesticide is distributed over a given area. When the application speed increases, the same volume of pesticide is spread over a larger area in a shorter amount of time, thereby influencing the concentration applied per square foot. Conversely, if the application speed is reduced, the pesticide is applied to a smaller area, potentially increasing the concentration applied. Variables such as ambient temperature, wind speed, and humidity levels can influence pesticide effectiveness, drift, and evaporation, but they don't alter the fundamental application rate as determined by the speed at which the applicator moves or operates the equipment. Understanding how application speed impacts the rate is crucial for achieving effective pest control while avoiding over-application or under-application of the pesticide.