Allelopathic chemicals have an important role in reproduction, growth, and survival in an
ecosystem. To determine the allelopathic effect of Indian plum (Ziziphus mauritiana)
contrary to three selected crops i.e. wheat (Triticum aestivum L.), maize (Zea mays L.),
and chickpea ( Cicer arietinum L.). The collection of Indian plum was made from Ahmad
Abad District Karak and was dried at room temperature under the shade. The aqueous
extract was used from different parts of the plants, which include bark, fruit, leaves,
mulching, and rainwater. In all applications the growth of plumules and radicles of three
test species was retarded. It was determined that the allelopathic effect of extracts is
directly related to the duration of soaking i.e. 48 h extracts were more effective than 24 h.
among all parts the highest activity was shown by leaves followed by fruit, bark, Rainwater,
and then mulching. From the above experiment, it is strongly suggested that the tested
portions of Z. mauritania have significant negative allelopathic effects on the tested plant
species. Additional study is mandatory to understand its allelopathic performance in field
conditions contrary to its related types and to recognize the noxious value.