Effect of Some Water Extracts Added Before Planting On Weeds Grown With Wheat

	Effect of Some Water Extracts Added Before Planting On Weeds Grown With Wheat
Journal of Tikrit University For Agriculture Sciences
Article 1, Volume 13, Issue 4, 2013, Pages 164-171
Abstract
Pots experiment was conducted during 2011-2012 growing season at the Agriculture college field / University of Tikrit to investigate the effect of shoot and root extract of sunflower , Eruca and Tomato on the germination and growth of some narrow and wide leaves weed in addition to the growth , yeild andits components of wheat varietySham-6.Two liters of extracts on concentration 2% and herbicide crew on concentration 2.5mL were added to pots one day before planting . The experiment was laid out in CRD with three replications. The results revealed that the shoot extract of sunflower significantly inhibited the germination of weeds and the shoot dry weight of narrow leaves weeds 33.37% and 65.2 respectively in comparison with control . The shoot extract of Eruca caused the most significant redaction on root dry weight of these weeds and gave the lowest value in this character ( 0.135 gm) .There was no significait differences on shoot and root dryweight of wide leaves weeds and plant heigh , Chlorophyl content on flag leave , no . of spikes plant , 1000 grains weight and plant yield of wheat . Shoot extract of Tomato gave the lowesf content of chlorophyll ,While the shoot extract of sunflower gave the lowest value of flag leave area . The heighest value of no. of grains/spike was 21.7 in the root extract of tomato treatment .
Keywords
wheat; Allelopathy; Weeds

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