Control of liverwort (Marchantia polymorpha L.) growth in nursery plants with mulches of Sphagnum moss and blackcurrant stem pieces

Liverwort (Marchantia polymorpha L.) is a problematic weed on container surfaces in nurseries, because it hampers water and nutrient access to growing plants. No chemical herbicide against it is available in the EU. Mulches are the most common non-chemical weed control method. Mulches of Sphagnum moss and 1-cm blackcurrant stem pieces were used. Mulches’ effect on liverwort control continued for two years on highbush blueberry and blackcurrant,...