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.
