I am interested indeed 🙂 I have worked with some Pellia extracts some years ago – with a medium success, it was not a breaktrough.

I have found the paper – much of it is about the chemical analytic side, not so inspiring for application. But two informations are crucial that I think are not transported well: the oxylipin is generated after wounding, so probably you have to crush the moss and sit it a bit before extraction. The other that is has been extracted with methanol and then sprayed. So I guess that they have been only misted on (?!). The experimental procedure is put into the “background-informations” and this is not in the net :-(.

Has Stahl’s work been translated?

Keep in mind: a slug damage is a sign of osmotic instability or fermentation (anoxic happenings) – so watch your roots and compaction. Monitor reduced iron tightly, and avoid blowing up cells so they get soft cell walls (nitrogen!). The radula tongue of a slug is made to kind of rasp off the softened material (they love to feed on algae). So I think that they mistake the smell signals of the plant as they usually would find wilting softened tissues that begin to decay with it. As soon as the material lignifies, slugs tend to avoid it.

Best H