تأثير مستخلص المجموع الخضري و الجذري لحشيشة السعد (Cyperus rptundus)‎ و الجعضيض (Sonchus oleraceus)‎ في إنبات و نمو نبات البرسيم (Medicago sativa)‎

الملخص EN

Two laboratory experiments were carried out to study the effect of the aqueous extracts of shoot and root systems of Cyprus rotundus and Sonchus oleraceus weeds on the rate and speed of germination of the seeds of Medicago sativa plant and the length of the hypocotyle and semi roots.

Seeds were sown in petri dishes and treated with aqueous extracts of the two plants.

Four levels of concentrations (0، 10، 20، and 30%) were tested.

The results showed that the aqueous extracts of C.

rotundus weed inhibits all the studied properties and the inhibition increased with the increase of the extracts concentration.

The aqueous extracts of the weed S.

oleraceus showed no effect on rate and speed of germination of seeds but produced varied effect on hypocotyle and semi root lengths of M.

sativa plant