Survey of Density and Abundance for Barely Field’s Weeds in Azarbayjan – e- shargi province

Document Type : Research Paper

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Abstract

In order to identify the density and abundance of weeds in barely fields of Azarbayjan-e-shargi Province, 80 fields in 19 towns for two years (2008-2009) were investigated. A total of 219 weed species from 36 families were observed within the barely fields. Among 219 species recorded, 107 species occurred in more than three township and 120 species occurred in more than three fields. Maximum weed densities were found in the Garaaghaj, Maragheh and Malekan with 20.82, 22.17 and 22.18 plant/m2, respectively and minimum in the Varzagan, Sarab, and Bonab with 91.77,85.61 and 82.97 plant/ m2, respectively. The 116 species of 219 species belonging to four major families, Asteraceae, Brassicaceae, Poaceae, and Fabaceae, with 42, 30, 24, and 20 species, respectively. Prostrate knotweed (Polygonum aviculare), bindweed (Convolvulus arvensis), and threehorned straw (Gallium tricornutum) were dominant species based on a abundance index (AI). Hashtrud, Kaleybar and Jolfa with 93, 87 and 82 species, respectively, had maximum diversity in weed community and Malekan, Garaaghaj and Ajabshir with 10, 21 and 22 species, respectively had minimum diversity

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References

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Iranian Journal of Weed Science
Volume 5, Issue 1 - Serial Number 1
September 2009
Pages 69-90

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