THE EFFICENCY OF SOME HERBICIDES IN TWO WHEAT VARITY (Triticum durum) ON WEED CONTROL UNDER DRY LAND AREA IN NORTH IRAQ

Field experiment was conducted in winter season of 2004-2005 at field of college of Agriculture / Mosul university field to evaluate the effeciency of two herbicides ( Topik 70 g.a.i / ha , Lintor 120 g. a . i /ha ) with two wheat varity ( Waha , Om rabee ) for weed control in wheat field under dry land farming conditions . Date were subjected to the conventional analysis randomized complete block design (R.C.B.D) as a factorial experiment within split plot with three replicats . The results , showed that the narrow leaf weeds had decreased up to 98 , 91 % for Topik and Topik + Lintor treatment , respectively . Also broadleaf weed had decreased up to 74.5 , 54% for Lintor + Topik ,and Lintor treatment respectively There is no significant effect of varity or herbicides on number of tillers , number of seeds per spik and 1000 seeds wieght , but significant effects on plant seed yield had been showed where Om rabee had higher seed than Waha . Also waha had been effected with weeds more than Om rabee . There is no significant effect between herbicides used on plant seed yield .