Which approach is NOT advisable when needing to increase application volume while minimizing drift?

Increasing application volume while minimizing drift is a critical aspect of effective pesticide application. It is essential to ensure that the application system is functioning correctly to maximize efficacy while reducing the chances of drift, which can lead to unintended pesticide exposure to non-target areas.

Using a nozzle with a larger orifice size is advisable because it allows for a greater volume of pesticide to be applied. However, it is important to understand that larger orifices typically produce larger droplets, which are less susceptible to wind drift.

Operating at a lower pressure is also a recommended tactic as it results in larger droplet sizes. Increasing droplet size reduces the number of smaller droplets that can be carried away by the wind, thus minimizing drift while also maintaining an adequate application rate.

Neglecting to redo the pattern test, on the other hand, is not advisable. A pattern test is crucial for ensuring that the application equipment is delivering the right amount of pesticide uniformly across the area. Failing to conduct this test could lead to uneven application, which can either increase drift or leave areas untreated, defeating the purpose of increasing volume effectively.

In this context, the approach of neglecting to redo the pattern test is the one that should be avoided, making it the correct response to the question. Conduct