Investigation of Allelopathic Potential of Acacia Nilotica L.

Abstract

Acacia nilotica. L commonly known as babul, kikar or Indian gum Arabic tree, has been recognized worldwide as a multipurpose tree. Set of experiments were conducted for evaluation of the allopathic effects of water extracts of different parts (park, leaves and pods) of A. nilotica as well as soil extracts under canopy on seed germination and seedling development of receptor specie (Cucumus sativus L.) under different concentration (1%, 5% and 10% ). Inhibitory effect of the different donor plant parts water extracts was ranked as follows: pod > leaf > bark. Soil extracts at different distances from trunk had stimulatory effect at 2m and 5 m distance while at the edge showed inhibitory effects on seed germination and seedling development of both C. sativus L.

Effect of Aqueous Extract of some Windbreak Tree Leaves on Seed Germina-tion and Seedling Growth of Squash

“…It can be said that the acacia was the only tree that had a very strong allelopathic effect on squash germination and seedling growth. Using different crops, similar findings of strong Acacia allelopathic effects were reported (Al-Wakeel et al, 2007;Alshareef & Alaib, 2018).…”

“…(Hegab et al, 2016) reported that the aqueous extract of Eucalyptus reduced the water content of corn plants. (Alshareef & Alaib, 2018) indicated that treatment of cucumber seeds with the aqueous extract of Acacia trees reduced the percentage of germination, length of roots, and the fresh and dry weight of the shoots of the cucumber seedlings. The reduction in these parameters was directly proportional to the concentration of the applied aqueous extract.…”