التأثير الإليلوباثي لجذور Digitaria sanguinalis (L.)‎ crabgrass و التربة المحيطة بها لنبات عنق الثيل على إنبات بذور و رايزومات نبات الحلفا و نمو بادراته

الملخص EN

Greenhouse and laboratory experiments were conducted at the Mustansiria University in 2010 to investigate the possible allelopathic potential of Digitaria sanguinalis (L.) crabgrass and its decomposed residues on bladygrass (Imperata cylindrical) A noxious weed in Iraq, to the seed germination and seedling growth the research showed that the decomposed of root plant and root exudates that they have escaped to the associated soil of crabgrass have higher inhibition to the seed germination and seedling growth of bladygrass plant.

Than the un decomposed ,treatment, ,phenolic, ,steroid,tanin,coumarin,and essensial oil were detected in decomposed and un decomposed treatments of crabgrass,terpenes it is fond in un decomposed treatments and not found in decomposed treatments, and glycoside found in un decomposed treatments and not found in decomposed treatments.