Einfluß von Müllkompost und Eisenverbindungen auf die Eisen-, Zink- und Manganaufnahme von Sonnenblumen und Mais im Gefäßversuch

Influence of compost and Fe-compunds on the uptake of Fe, Zn and Mn by sunflower and maize in pot experiments The influence of compost and different iron compounds on the uptake of Fe, Zn and Mn from calcareous soils was investigated in a pot experiment using sunflower and maize. Regardless of the iron compounds applied, the addition of compost resulted in an increase of the Zn content in both plant species. The compost treatment without Fe, resulted in a lower Fe content in sunflower and maize. This effect was partly or completely counteracted by the addition of Fe compounds. Very high Zn contents were observed in the Fe – EDTA treatments. The Zn content was further increased when compost was also added. In treatments in which compost was omitted none of the Fe compounds applied increased the Fe content of the plants.