Determining Weed Maps and population characteristics of Irrigated Wheat Fields for Sistan and Baluchestan Province
A study was done to map weeds in irrigated wheat fields from 2001 to 2006 in Sistan and Balochistan province. In this study, 44 sample wheat fields were selected and weed species were counted in each sampling point and population indices were calculated. In each fields longitude, latitude and altitude were recorded using GPS. These data were used for producing weed map using GIS. Results showed that annual yellow sweetclover (Melilotus indicus (L.) All.), common mallow (Malva neglecta Wallr.) and prostrate knotweed (Polygonum aviculare L.) were dominant broadleaf species in irrigated wheat fields of Sistan and Balochistan province. Dominant grass weed species were japanesse brome (Bromus japonicus Thunb.ex murr), winter wild oat (Avena ludoviciana L./Dur.) and Canarygrass (Phalaris minor Retz.). Hoary cress (Cardaria draba (L.) Desv.), field bindweed (Convolvulus arvensis L.), camel’s thorns (Alhagi pseudalhagi (M.Bieb.) Desv.) and Salsola spp. were the most important disturbing plants prior to harvesting in irrigated wheat fields of Sistan and Balochestan province.
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