What do you do with all your dross?

[Pjotr84]

Yeah, I meant purily for getting more speed, less plenty. Purity is indeed not affected by fertilisers. It's just that when you focus on getting higher purity cabbage, dross can be helpful in getting rid of all the cabbage you're getting, since you're only interested in the seedstalk

[Hans_Lemurson]

Ok, well I already planted a new field and loaded it up with Dross to see if it would boost the Sulfur or Lead (my ore is 10/10/40/40).

I now know that it won't have any effect, but it's an interesting experiment nonetheless. I gave it a piece of Lime to up the plenty, and then unloaded 16 Dross onto it.

[Pjotr84]

You can expirement all you want, but purity increase/drop is random now

[Hans_Lemurson]

Random but affected by the field's influences, right?

[MagicManICT]

Purity and influence are two completely separate mechanics at this point. Purity is random. Influence is changed by what you plant (and how much/with what you fertilize).