The Allelopathic Potential of Erica australis L. and E. arborea L.

Abstract
In laboratory tests aqueous extracts of aerial parts of E. australis L. and E. arborea L. significantly inhibited root and hypocotyl growth of red clover (Trifolium pratense L.) but did not affect germination. Inhibition remained after chromatographic separation of the extracts. Using intact fresh leaves, stems and flowers of E. australis and E. arborea, we also observed an inhibitory effect on root and hypocotyl growth. Dead leaves and flowers significantly inhibited the growth of red clover grown in soil in the greenhouse.