Why is liquid better than crystalline copper?
Crystalline copper (copper oxychloride, copper hydroxide) is not very soluble, and at best forms a suspension of small crystals. These crystals are then pumped through your impeller, filters and nozzles and cause excessive wear. The droplets land on the leaf and start drying down. As this happens, the suspended micro- crystals act as seed crystals for the small amount of soluble copper to re- crystalise onto. This results in relatively large crystals settling loosely on the leaf surface. The same can be said for the other “liquid” coppers available on the Australian market which are simply crystalline copper in suspension. Liquicop, on the other hand, is never a crystal – in fact it is manufactured from a solid piece of copper which is brought into the solution by electrolysis. Once it is mixed (no pre- mixing required) and pumped smoothly through your spray- rig, the droplet starts drying down on the leaf. There are no seed crystals so the copper starts to crystalise onto the leaf sur
