To compensate for slipstream turbulence caused by propeller rotation, you should place ___________ nozzles on the right half of the boom.

The correct choice is to place more nozzles on the right half of the boom to compensate for slipstream turbulence caused by propeller rotation. This phenomenon occurs when the rotation of the aircraft's propellers creates a disturbance in the airflow around the aircraft, resulting in uneven flow characteristics over the wings and the boom where the nozzles are located.

By fitting more nozzles on the right side, the increased output helps to ensure that the application rate remains consistent, counteracting the effects of the turbulence and maintaining proper spray coverage across the target area. This approach allows for more precise and effective pesticide application, ensuring that adequate coverage is achieved and minimizing the risk of under-application due to the disrupted airflow.

In contrast, having fewer nozzles would lead to reduced spray volume on that side, which could result in uneven applications and possible gaps in coverage. Keeping the same number of nozzles would not address the discrepancy caused by the turbulence, as it does not adjust for the potential loss of efficiency. Lastly, eliminating nozzles entirely would drastically reduce the potential for effective delivery of chemicals, making it a poor choice for managing spray distribution in the presence of slipstream effects.