All good. You did say "so we don't get confused", as if I was...

All good. You did say "so we don't get confused", as if I was the one confusing others. But posting incorrect info added to confusion.

Phosphate and potash are two different fertilisers with different application. Potash does not contain phosphate/phosphorus.

”Phosphate is an essential mineral for humans, animals and plants alike. Potash contains a water-soluble form of phosphate and is used for fertiliser as sulphate of potash (SOP) and muriate of potash (MOP).”

Where ever you cut this from, find a better source.

This link is a good brief summary.

https://investingnews.com/daily/resource-investing/agriculture-investing/phosphate-investing/potash-vs-phosphate-whats-the-difference/