The Effects of methanolic extract of Eucalyptus camaldulensis Dehnh. on growth and germination rates of Chenopodium album L

This research was carried out under laboratory conditions in 2007 at Research Institute of Forests and Rangelands. Experiments were done by randomized completely block design with 4 replications. The results showed different levels of E. camaldulensis Dehnh. leaf extracts in winter and spring had significant effects on plant length, germination percentage, germination speed, seed vigor, shoot/root rate, seminal root (α =0/01) of Chenopodium album L. Comparison between treatments showed that using 9 gli-1 of both Eucalyptus extract had maximum inhibitor on characteristics of weeds. Comparison effect of winter and spring extracts leaves on morphological characteristics of weeds showed that spring extract had high effect compared with winter extract. The results of this research showed that using of Eucalyptus leaf extract can control the weed growth of Chenopodium album.