عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Weed survey of irrigated wheat fields is the most important practice in weed management. Based on cultivation area in all counties of Tehran province during six years (2000-2005), 61 sample wheat fields were selected and weed species were counted in each sampling point and population indices were calculated. In each field longitude, latitude and altitude were recorded using GPS. These data were used for producing weed maps using GIS. Results showed that flixweed (Descurainia Sophia [L.] Schur.), knotweed (Polygonum aviculare L.), few-flowered fumitory (Fumaria vaillantii Loisel.) and catchweed (Galium aparine L.) were dominante broadleaf species in irrigated wheat fields of Tehran province. Dominant grass weed species were winter wild oat (Avena ludoviciana Durieu.), wild barley (Hordeum spontaneum C. Koch.) and Feral rye (Secale cereale L.). Field bindweed (Convolvulus arvensis L.), Canada thistle (Cirsium arvense [L.] Scop.) and hoary cress (Cardaria draba [L.] Desv.) were the most important disturbing plants prior to harvesting in irrigated wheat fields of Tehran province.