Increased drought stress tolerance
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).
Outdoor, full soil, three consecutive years wiht dry and hot summers (2018-2019-2020)
Norway maple, Acer platanoides
Bokashi: shallowly incorporated in soil around plant; Microferm: foliar spray
Bokashi: immediatly after planting; Microferm: every 2 months
Bokashi: 1kg/m²; Microferm: 20 ml/l at a rate of 1000 l/ha