Investigation of Allelopathic Potential of Acacia nilotica L. Different Parts (Bark, Leaves and Pod) on Some Plants

Abstract

Set of experiments were conducted for evaluation of the allopathic effects of water extracts of different parts ( Bark, leaves and pods) of A. nilotica as well as soil extracts under canopy on seed germination and seedling development of two receptor species ( Cucumus sativus L. and Rphanus sativus L.) under different concentration. inhibitory effect of the different donor plant parts water extracts was ranked as follows: pod > leaf > bark. On the other hand, the germination percentage and seedling growth of investigated receptor species demonstrated a gradual decrease with applying higher concentration of the donor species as follows: Rphanus sativus > Cucumis sativus regardless of the different donor plant parts. Soil extracts at different distances from trunk had stimulatory effect at 2m and 5 m distance while at the edge soil extract showed inhibitory effect on seed germination and seedling development m of both Cucumus sativus L. and Raphanus sativus L.