بررسی اثر آللوپاتی عصاره های آبی علف های هرز روی شاخص های جوانه زنی بذر ذرت

In order to evaluate the allelopathic potential of shoots and roots of the important weeds of corn
fields like Johnson grass (Sorghum halepense), Lamb's quarter (Chenopodium album), Common
wild oat (Avena fatua) and Green foxtail (Setaria viridis) on germination and growth stages of corn,
an experiment was conducted in a factorial design with Completely Randomized arrangement in
three replications Treatments of experiments were taken in to account including aqueous extracts of
shoots and roots of four weeds with concentrations 6.25, 12.5, 25, 50, 75 and 100%. Results of the
experiment showed that in view of type of weed, Johnson grass and wild oat had most negative
effects on germination and growth stages of corn. Also shoot extract had more allelopathy in
comparison root extract The most inhibition was observed in 100% of concentration of shoots
extract of Johnson grass.