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Allelopathic Effect Of Some Weeds
Samir Tabbache and Sabah Almaghribi
Plant
Protection Department, Faculty of Agriculture, Tishreen University, Lattakia,
Syria
E-mail: Tabbache@scs-net.org
Abstract
The effect of the aqueous extracts of the following dried weeds: yellow
melilot (Melilitus indica), annual blue grass (Poa annua), bind
weed (Convolvulus arvensis), field marigold (Calendula arvensis)
and buckhorn plantain (Plantago lanceolata) on the germination and root
growth of wheat (Triticum sp.) and chickling vetch (Lathyrus
sativus) were evaluated. The 0.2% concentration of the yellow melilot, bind
weed and annual blue grass extracts reduced wheat seedlings root growth by 93,
47 and 36%, respectively. Aqueous extract of field marigold at 0.5% increased
wheat seedlings root growth by 10% in comparison with the control. In addition
the same concentration had an inhibitory effect on chickling vetch root growth
by 37%. The extract of buckhorn plantain at 0.5% reduced root growth of wheat by
10% and chickling vetch by 45%. The inhibitory effect of the extracts was
proportional to their concentration.
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