الفهرس 
Wheat cropOnly 14 pages are availabe for public view
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Abstract
The present study was conducted on the important crop (wheat) as it is source of many food and industrial materials. Also, the crop faced weeds reduction for its yield due mainly to crop service at the field resulted from technical or economic problems. However studying the crop and weeds allelochemicals had great importance as it could be a save resolution to the most crop problems.The results obtained indicated that the distance between wheat plant and the
associated weeds at vegetative,flowering and fruiting stages which recorded in 100 sites in the studied wheat fields varied significantly and the nearest distance was greater than 1cm from wheat plant.Also, this nearest distance increased with stage of wheat growth
when the root system of wheat plant extensively spread and compete the weeds around in the soil