Summary This trial aims to monitor effects of a specific and precisely added nutritive load (arginine) in the establishment of a new generation plantlings. The trial also aims to repeat the same load yearly after establishment to see growth effects. The trial is set up as parcels of pine, spruce and birch both in mixtures and monoculture. Nutrition management, growth and survival of common species in monocultures and in mixed stands. Established 2020-06 Also see in same trial series location Fredrika, Västerbotten and Asa, Småland.