Choosing a herbicide is often 5% of the total solution in the spray tank and the remaining 95% is water. We often do not consider the quality of water and how it can impact herbicide performance. In this course we will cover three critical water quality parameters that can impact herbicide efficacy. These are turbidity, water hardness and water pH. We will discuss some common tips to reduce the risk of reduced herbicide performance due to poor water quality. The course will also look at a water test to better understand how to access a water test for spray water quality.