Soil content of low molecular weight organic acids and biological properties for Date palm(Phoenix dactylifera) and Zizyphus (Ziziphus spinachriti) root zone (Rhizosphere) of some calcareous soil
2012, Volume , Issue المؤتمر العلمي الثاني لكلية الزراعة, Pages 1293-1301
Abstract
Two sites(Abul– Khasseb and AL – Chabacy) in Basrah gavernorate were selected to study the effect of Date palm (Phoeninx dactylifera ) and Zizyphus (Zizyphus spinachriti) root Zone (Rhizosphere) ,and samples from bulk soil (as control) at three depths (0 – 30 ) , (30 – 60 ) and( 60 – 90 ) cm on different soils properties . Rhizosphere soils of Abul – Khasseb and AL – Chabacy were surpassed with high content of low molecular weight of organic acids (LMWOAs) as compared with bulk soils .Soils content of organic acids were as follow: Malic acid < Citric acid < Succinic acid < Maleic acid < Oxalic acid. Numbers of bacterial and fungi colonies were increased in rhizosphere zones of studied situations plants and depths as compared with bulk soil , to confirm the activity of this zone and its biological role in many changes and reactions
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