STIMULANT AND TOXIC EFFECT OF BIOMASS ASH DOSAGE

IN POT EXPERIMENT

László TOLNER – István ZIEGLER – György FÜLEKY – Miklós GULYÁS –

Gabriella RÉTHÁTI

Szent István University, Department of Soil Science and Agricultural Chemistry, Páter Károly Str. 1. H-2103

Gödöllő, Hungary, tolner.laszlo@mkk.szie.hu

Abstract: The ash which is originated from energetically use of biomass contain plant nutrients. For this

reason the use of this by-product as a plant nutrient is suitable. In the course of burning some nutrients (N, S)

exist from the system but other nutrients (Ca, K, Mg, microelements) are concentrated in the ash. The effects

of higher concentration of potential toxic and essential microelements are depending on dosage. The

agricultural use of biomass ash in small concentration works as a stimulant but higher concentrations have

toxic effect on plants.

The effect of different biomass ash dosage were investigated in pot experiment on Ryegrass and White

mustard. The optimal dosage was 16 t ha-1 in case of Ryegrass. Significant effect was not found on White

mustard below 20 t ha-1.

Keywords: biomass ash, pot experiment, ryegrass, white mustard