Mixing order and water quality transcript
There's generally an order to follow when mixing chemicals. In this example we're using a glyphosate that requires a wetter and ammonium sulphate. It's important to use registered chemical products.
Follow all safety precautions: wear personal protective equipment listed on the label such as gloves; glasses; and use double lids on chemical containers to bleed air and prevent glugging and spillage.
Water quality is critical to the efficacy of chemicals. Dimethoate at a pH of nine for one example, has a half life of 48 minutes in the spray tank. Efficacy monitoring needs to be done at the end of the tank when the chemical is at its weakest. In these cases, you should prepare the mix at the spray site.
A worst case scenario is to mix a tank of dimethoate with pH9 water at your chemical shed, and then drive 30 minutes to the paddock. Likewise, water turbidity or cloudiness is critical with glyphosate products.
View the Mixing order and water quality video.