INFLUENCE OF MIXING WHEAT AND FLAX ON CROP PRODUCTIVITY AND GROWTH OF ASSOCIATED WEEDS IN HIGH RAINFALL REGION

	INFLUENCE OF MIXING WHEAT AND FLAX ON CROP PRODUCTIVITY AND GROWTH OF ASSOCIATED WEEDS IN HIGH RAINFALL REGION
Journal of Tikrit University For Agriculture Sciences
Article 1, Volume 13, Issue 2, 2013, Pages 210-214
Abstract
A field experiment was carried out to evaluate the mixed cropping of wheat with flax seed under zero tillage in the dry land farming and its effect on weed growth and yield crops at Alkosh and Talkeef in northern Iraq for three season (2008-2011) . The mixed cropping treatment included seed rate for wheat (80,120 kg/ha) and for flax (32,48 kg/ha) with different percentage of crops mixture (100, 75,50,25,0.0%). The results showed that the experiment in the first two years had disappointed under low rainfall seasons but the results had obtained in the third season at Talkeef . Weed dry weight had decreased up to 64.9% as a result of planting wheat (100%) under 120 kg/ha if it compared with planting flax alone . Also number of spikes/m² and spike length had significantly superior at 100% wheat treatment and gradually had diminished as the wheat mixture reduced .Wheat yield in the high seed rate had increased up to 24.5% if it compared with low seed rate under 100% wheat . On other hand , there was low number of flax plants/m² as a result of low seed rate and under low mixture percentage . Flax seed yield was increased when it planted alone (100%) and it be reduced gradually as the percentage of seed flax reduction in the mixture . However , there was high reduction in the weed percentage when it planted wheat + flax mixture if it compared with flax alone . The best result from mixed cropping in the seed yield was at 75% wheat + 25% flax under different rate seed .
Keywords
Mixing; Wheat; Crop

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