Using sterols to detect pig slurry contribution to soil organic matter | L'utilisation de stérols pour détecter la contribution des déjections porcines à la matière organique des sols
2007
Jardé, Emilie | Gruau, G. | Mansuy Huault, L. | Peu, Pascal | Martinez, José | Géosciences Rennes (GR) ; Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR) ; Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS) | Centre National de la Recherche Scientifique (CNRS) | Gestion environnementale et traitement biologique des déchets (UR GERE) ; Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF)
[Departement_IRSTEA]MA [TR1_IRSTEA]TED / EPURE
Mostrar más [+] Menos [-]International audience
Mostrar más [+] Menos [-]Inglés. Samples of pig slurry, as well as dairy and poultry manures collected in Brittany (western France)were analysed to test the ability of sterol profiles to provide a fingerprint of pig slurry contribution to soil organic matter. The data show that the 5β-stanol, known as coprostanol, is the most abundant sterol present in pig slurry, whereas this compound occurs only in minor amounts in both poultry and dairy manures. Moreover, systematic variations of (campesterol + sitosterol)/cholesterol (i.e., C28+29/C27) and (coprostanol + epi-coprostanol)/cholesterol (i.e., 5β/C27) ratios allow to discriminate clearly pig slurry from poultry and dairy manures. The robustness of the pig slurry sterol fingerprint was tested by analysing the sterol profiles of soil samples from an experimental field that had received a massive pig slurry input between 10 to 14 years ago. The results indicate that the specific sterol profile of pig slurry is conservative once the slurry has been incorporated into the soil. In particular, the diagnostic 5β/C27 ratio proves to be constant with time in soils having received pig slurry application, even 10 years after the end of the application. The sterol fingerprint of pig slurry is thus sufficiently distinctive from dairy and poultry manures, and also sufficiently time-resistant, to be of diagnostic value in determining whether a soil sample was once contaminated by pig slurry.
Mostrar más [+] Menos [-]Palabras clave de AGROVOC
Información bibliográfica
Este registro bibliográfico ha sido proporcionado por Institut national de la recherche agronomique