There are many variables that can impact on the outcome of a spray job, so it is important for spray applicators to use tools available to them to take some of the guesswork out of the spraying operation, especially the nozzles chosen and the total application volume used.

The choice of application volume and spray quality are the two main factors that will affect the outcome of the application and generally drive the decision about how the sprayer is set up. However, once the spray rig is in the paddock most operators can only ‘hope’ that the set-up will get enough of the spray droplets to land where they are required. Unless the operator is actually assessing and measuring the impact of the set-up and how this influences spray coverage, it really is guesswork.