Enricher VS direct fertilizer usage in soil cells

[tornadojack]

In wiki I read that I can't use multiple additions to the soil in one cell, e.g. fertilizer and retaining soil.
But what will happen if I put some retaining soil or fertilizer into the soil directly and some other fertilizer into sprinkler enricher?
What effect will be got? What fertilizer will prevail? Or both will be applied?

 

[imnvs]

Only 1 fertilizer still. See, how the enricher works is if you are planting something within reach of the sprinkler/enricher, the fertilizer in the enricher is automatically applied... as you plant. Additionally, it won't apply it to that tile if there is already fertilizer there.

 

[tornadojack]

enricher is automatically applied... as you plant

Strange mechanics. I propose some interesting alternative here.