5. Adjust sprayer for tree height

• This is achieved by switching off/on the upper-most nozzles to adjust the spray plume height. This gives a pro rata adjustment of dose rate for a sprayer operating at constant spray pressure.
• For example, switching off the upper 25% of nozzles when the tree height is 25% smaller than the standard gives a dose reduction of 25%.
• Switching off/on the nozzles in this way also gives a pro rata adjustment of the water volume application rate.