Illinois Pesticide Applicator Practice Test

What type of nozzle sprays in a cone pattern with droplets throughout?

1. Flat-fan nozzle

2. Solid-cone nozzle

3. Hollow-cone nozzle

4. Drift-reducing nozzle

The correct answer is: Solid-cone nozzle

The solid-cone nozzle is designed to create a spray pattern that distributes droplets throughout a conical shape. This type of nozzle produces larger droplets at the center and increasingly smaller droplets toward the outer edges, achieving a fuller coverage of the treated area. The conical pattern allows for effective targeting of various surfaces and ensures that the pesticide application can penetrate the canopy of foliage or cover an area uniformly. In comparison, a flat-fan nozzle produces a fan-shaped spray pattern that is typically used for applying pesticides in a more linear manner, which may not provide the same coverage or targeting capabilities as the solid-cone nozzle. The hollow-cone nozzle, on the other hand, also produces a conical spray but focuses on delivering smaller droplets primarily through the center, which can lead to greater drift and less penetration for certain applications. Drift-reducing nozzles are specifically designed to minimize drift during application and typically focus on creating larger droplets rather than a widespread conical pattern, making them less suitable for applications requiring a cone-shaped distribution of droplets.