03.08.2015   Recycling of Biomass Ashes

Heavy Metals

Repeated application of ash did not produce significant changes in foliar concen­trations of any of the elements. However, the application produced an increase in the concentration of Zn, Cu, and Ni in needles in the plots on lutites (Table 6.5). This was not observed in 2006. The foliar concentration of Cd was closely related to soil acidity and therefore the concentration of Cd decreased from the third applica­tion of ash onwards.