Tommy Butts Spray water quality, specifically pH and hardness, can impact the efficacy of numerous pesticides. In general, active ingredients tend to be more efficacious in neutral or slightly acidic spray water and with low water hardness (i.e. soft water). But how can we know what our spray water quality actually is? This is where we come in. The weed science program as a part of the University of Arkansas Division of Agriculture is collecting spray water samples and conducting a pH and water hardness analysis. 3 31 2020 Tuesday, March 31, 2020 6:59:02 AM PDT Weed Management,Herbicides,Application Technology afranke@uada.edu