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Articles by J. Alhassan
Total Records ( 1 ) for J. Alhassan
  A.I.,Yakubu , J. Alhassan , A. Lado and S. Sarkindiya
  A survey of weeds commonly found in irrigated carrot (Daucus carota L.) potato (Solanum tuberosum L.) and wheat (Triticum aestivum L.) in Sokoto Fadama (latitude 13o 01’N and longitude 5o 15’E) was carried out during 2001/2002 and 2002/2003 dry seasons. A total of 38 major weed species were identified. Broad leaved weeds had the highest frequency (24 species) followed by grasses (11 species) and sedges (3 species). Highest density and proportions of most weeds species were found in carrot, followed by potato and only very few in wheat. Wild rice (Oryza longistaminata A. Chev and Roehr) and Panicum subalbidum (Kunth) were the grasses that occurred in all the three crops in both seasons. The broad leaved weeds that were common to all the three crops were Amaranthus viridis L., Cleome, rutidosperma (DC.), Ipomoea aquatica (Water spinach) Forsk. Melochia cochorifolia L. Phyllanthus amarus (Schum) (common purslane) and Portulaca oleracea (L.). Amaranthus viridis L. was the most frequent weed in all the crops during both seasons.
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