Response of bread wheat cultivars to the effect of the herbicides pendimethalin and pyroxsulam and their influence on growth characteristics and grains yield and its components
ANBAR JOURNAL OF AGRICULTURAL SCIENCES,
2011, Volume 9, Issue 2, Pages 146-158
Field experiment was carried out at the farm of the Dept. of Field Crop Science , College of Agriculture , University of Baghdad during the season 2008 / 2009 to evaluate the effect of pendimethalin and pyroxsulam herbicides on growth characteristics , grain and yield components of some wheat cultivars . Results showed that both herbicides were significantly efficienct in studied characteristics compared to weedy treatment . A positive effects were recorded for yield and yield components. The results showed that the reduction of weed density and weed dry weight in Iraq cultivar reached 90.7 plant / m2 , 24.4 g / m2 respectively . Tahaddi cultivar produced the highest grian yield ( 6.7 t / ha ) , biological yield ( 17.7 t / ha ) and harvest index (16.7 %) . However the cultivar Abu-Graib3 gave highest number of spikes 452.2 per / m2 . While IPA95 cultivar was 97.8 cm height . The differences of wheat cultivars in their growth characteristics may be considered as indicators for determination the cultivars competitive ability against weeds .
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