Bokashi + Microferm

Norway maple (Acer platanoides 'Royal Red') in full soil recieved Bokashi during planting and was treated monthly with Microferm. This resulted after 3 years in an increase in plant height of 22,0% and an increase in stem diameter of  15,8% compared to the untreated control. The number of dead trees decreased with 60% and the number of failed graftings decreased with 21,2% compared to the control. There was no effect observed on the amount of chlorophyll, flavonols, anthocyans and the nitrogen balance index (indicative for stress responses).