What is the primary equipment used for hydraulic agitation in spray tanks?

The primary equipment used for hydraulic agitation in spray tanks is a shaft with paddles. This setup is crucial for ensuring that the mixture of pesticide and carrier (usually water) remains uniform throughout the tank. The paddles attached to the shaft rotate, creating movement in the liquid which helps to keep the active ingredients and any other components evenly suspended.

This is particularly important because if the mixture is not agitated properly, it can lead to settling or separation of the components, which could result in incorrect application rates and potentially reduce the effectiveness of the pesticide application.

While pumps can also be involved in the agitation process, their primary role is to move liquid from the tank through the system and not solely for maintaining agitation. Nozzles are designed for delivering the spray to the field and filters serve to keep the system free from debris but do not contribute to agitation. Hence, the shaft with paddles is specifically designed for hydraulic agitation, making it the most appropriate answer for this question.