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Chemical sequential extraction is widely used to divide soil phosphorus (P) into different inorganic (Pi) and organic (Po) fractions, but the assignment of these fractions to pools of differing plant availability, especially for low P tropical soils, is still matter of discussion. To improve this...


Buehler, S.Oberson, AstridRao, Idupulapati M.Friesen, Dennis K.Frossard, Emmanuel[Sequential phosphorus extraction of a 33P-labeled oxisol under contrasting agricultural systems]Sequential phosphorus extraction of a 33P-labeled oxisol under contrasting agricultural systems
Borrero, GonzaloFriesen, Dennis K.Oberson, AstridRodríguez, M.Rao, Idupulapati M.[Destinos de fósforo aplicado como fertilizante en oxisoles de los Llanos Orientales de Colombia: fraccionamiento secuencial]Destinos de fósforo aplicado como fertilizante en oxisoles de los Llanos Orientales de Colombia: fraccionamiento secuencial
Oberson, AstridPypers, PieterBünemann, Else K.Frossard, Emmanuel[Management impacts on biological phosphorus cycling in cropped soils]Management impacts on biological phosphorus cycling in cropped soils

Earthworms are considered soil ecosystem engineers that play an important role in soil organic matter dynamics and physical structure. Due to both their size and activities these organisms can accelerate the decomposition and mineralization of organic matter by reducing the size of residues to pa...


Jiménez Jaén, J.J.Cepeda, AFriesen, Dennis K.Decaëns, ThibaudOberson, Astrid[Phosphorus availability in casts of an anecic savanna earthworms in Colombian oxisol]Phosphorus availability in casts of an anecic savanna earthworms in Colombian oxisol
Friesen, Dennis K.Rao, Idupulapati M.Thomas, Richard J.Oberson, AstridSanz Scovino, José Ignacio[Phosphorus acquisition and cycling in crop and pasture systems in low fertility tropical soils]Phosphorus acquisition and cycling in crop and pasture systems in low fertility tropical soils
Rao, Idupulapati M.Barrios, E.Oberson, AstridAyarza, Miguel AngelFriesen, Dennis K.[Opportunities for increasing the efficiency of phosphorus use in tropical agroecosystems]Opportunities for increasing the efficiency of phosphorus use in tropical agroecosystems
Oberson, AstridBünemann, Else K.Friesen, Dennis K.Rao, Idupulapati M.Smithson, P.C.Turner, B.L.Frossard, Emmanuel[Improving phosphorus fertility in tropical soils through biological interventions]Improving phosphorus fertility in tropical soils through biological interventions

Oberson, AstridFriesen, Dennis K.Tiessen, H.Moir, JO[Effects of improved pastures and phosphorus inputs on phosphorus transformations in a Colombian oxisol]Effects of improved pastures and phosphorus inputs on phosphorus transformations in a Colombian oxisol
Rao, Idupulapati M.Barrios, E.Amézquita Collazos, EdgarFriesen, Dennis K.Thomas, Richard J.Oberson, AstridSingh, B.R.[Soil phosphorus dynamics, acquisition and cycling in crop-pasture-fallow systems in low fertility tropical soils: a review from Latin America]Soil phosphorus dynamics, acquisition and cycling in crop-pasture-fallow systems in low fertility tropical soils: a review from Latin America
Jiménez Jaén, J.J.Cepeda, AFriesen, Dennis K.Decaëns, ThibaudOberson, Astrid[Disponibilidad de fósforo en las heces de una especie anécica de la lombriz de tierra de las sabanas de suelo oxisol en Colombia]Disponibilidad de fósforo en las heces de una especie anécica de la lombriz de tierra de las sabanas de suelo oxisol en Colombia

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