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Abstract

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									    M. Oveisi1 and E. Ghorbani1

               Abstract
  An experiment was conducted at
  Pakdasht barley fields in 2004 &
 2005 growing seasons to study the
 effect of chemical control on weed
seed bank in rotation systems. Corn-
  barely rotation with and without
      chemical application was
 implemented. Method of sampling

								
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