PJB-2009-26
WEED COMMUNITIES OF WHEAT CROP IN DISTRICT TOBA TEK SINGH, PAKISTAN
RAHMATULLAH QURESHI*, ABDUL WAHEED AND M. ARSHAD
Abstract
Weed communities of wheat crop were determined using quadrate method at 5 different wheat growing localities of District Toba Tek Singh, during Rabi season 2006-07. A total of 38 weed species distributed across 35 genera and 17 families were recorded. Grassy weeds were constantly present in all the selected sites. Phalaris minor and Avena fatua were found the most dominant and frequent weed species with an average frequency of 84 and 72% respectively. The dominant families in terms of species were Asteraceae (7 spp.), Fabaceae, Poaceae (6 spp. each) and Chenopodiaceae (4 spp.). Based on Importance Value Index (IVI), five communities viz.
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