QUANTIFICATION BY ISOTOPIC METHOD OF A RH IZOSPHERIC EFFECT ON MINERALIZATION OF NITROGEN IN AN ALFISOL

Authors
REYDELLET I LAURENT F OLIVER R SIBAND P GANRY F
Citation
I. Reydellet et al., QUANTIFICATION BY ISOTOPIC METHOD OF A RH IZOSPHERIC EFFECT ON MINERALIZATION OF NITROGEN IN AN ALFISOL, Comptes rendus de l'Academie des sciences. Serie 3, Sciences de la vie, 320(10), 1997, pp. 843-847
Citations number
12
Categorie Soggetti
Multidisciplinary Sciences
Journal title
Comptes rendus de l'Academie des sciences. Serie 3, Sciences de la vie → ACNP
ISSN journal
07644469
Volume
320
Issue
10
Year of publication
1997
Pages
843 - 847
Database
ISI
SICI code
0764-4469(1997)320:10<843:QBIMOA>2.0.ZU;2-M
Abstract
The rhizospheric effect on mineralization of soil organic nitrogen was quantified by comparing nitrogen mineralization in rhizospheric roil (cultivation of ryegrass, high root density plant) and in non-rhizosph eric soil (soil without plant). Three different approaches showed that the plant enhances net mineralization, gross mineralization (at least 35%) and available nitrogen pool (50%). This rhizospheric effect may contribute highly to crop nitrogen supply in tropical regions.