Influence of Olea europea L. and Ficus Carrica L. fine root activity on the K biodisponibility and clay mineralogy of the rhizosphere

Authors : Sophia MOUASBOURBİA, Pierre BARRE, Malika Boudiaf NAİT KACİ, Malika MOUFFOK, Mohamed REBBOUH, Lila KESSOURİ, Hallima OUAHAB, Arezki DERRİDJ, Bruce VELDE
Pages : 220-226
Doi:10.18393/ejss.2015.4.220-226
View : 40 | Download : 5
Publication Date : 2015-10-01
Article Type : Research Paper
Abstract :The objective of this study was to compare the effect of fine root activity of Olea europea L. and Ficus carrica L. of soil in its immediate vicinity insert ignore into journalissuearticles values(in the so-called rhizosphere zone);. The study was conducted on two stations in Northern Algeria: Guendoul and Bouira. Olea europea L. and Ficus carrica L. roots significantly modified some chemical properties of rhizosphere soil. Increases of soil carbon, KNH 4 + and KHNO 3 - were observed in the Olea europea L. and Ficus carrica L rhizosphere soil at both stations. Bulk and rhizosphere soil clay mineralogy was similar. Interstratified illite-smectite, smectite-illite and illite were predominant in the clay fraction. Chlorite and kaolinite were less represented. The decomposition of XRD diffractograms of two soil clay fractions using the Decomp program revealed that Olea europea L. roots promote nK + storage in interlayer position. Indeed, the lower abscissa position of the gravity center insert ignore into journalissuearticles values(cg); of the X-ray patterns, the peak displacement of clays populations  PCI, I/S, S/I  toward illite peak position indicates  an increase of  “illite-like” layer content in the vicinity of Olea europea L. roots. Olea europea L. roots appeared to have more influence on the rhizosphere soil than Ficus carrica L. roots  probably because of its higher root biomass and the greater activity of the tree in winter insert ignore into journalissuearticles values(contrary to Ficus Carrica L., Olea europea L. keep their leaves in winter);. The two species underground activity seems to be well reflected in their respective rhizosphere.
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