The fate of nitrogen derived from 15N-labeled cattle manure compost and ammonium fertilizer in sandy soil monolith lysimeters for 2.5 years

azote compost composts crops cultivos dune soils faeces feces heces isotope isotopes leaching lessivage du sol losses from soil lysimeters nitrogen perte par le sol plante de culture regosol regosoles regosols sol de dune suelo de dunas