%0 Conference Proceedings %T Use of growth indices on the mechanisms of competition between barnyardgrass (Echinochloa crus-galli) and redroot pigweed (Amaranthus retroflexus) with dry bean (Phaseolus vulgaris %A Izadi Darbandi, Ebrahim %A محمد حسن راشد محصل %A مهدی نصیری محلاتی %J 21th Asian pacific weed science society(APWSS) conference %D 2007