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Gijsman, AJOberson, AstridTiessen, H.Friesen, Dennis K.[A cautionary note about the use of the CENTURY soil-organic-matter model for ecosystems on highly-weathered tropical low-P soils]A cautionary note about the use of the CENTURY soil-organic-matter model for ecosystems on highly-weathered tropical low-P soils

Oberson, AstridFriesen, Dennis K.Rao, Idupulapati M.Buehler, S.Frossard, Emmanuel[Phosphorus transformations in an oxisol under contrasting agricultural systems: the role of the microbial biomass]Phosphorus transformations in an oxisol under contrasting agricultural systems: the role of the microbial biomass

It is generally assumed that phosphorus (P) availability for plant growth on highly weathered and P-deficient tropical soils may depend more on biologically mediated organic P (Po) turnover processes than on the release of adsorbed inorganic P (Pi). However, experimental evidence showing the link...


Oberson, AstridFriesen, Dennis K.Rao, Idupulapati M.Buhler, SFrossard, Emmanuel[Phosphorus transformations in an oxisol under contrasting land-use systems: The role of the soil microbial biomass]Phosphorus transformations in an oxisol under contrasting land-use systems: The role of the soil microbial biomass
Friesen, Dennis K.Rao, Idupulapati M.Thomas, Richard J.Oberson, AstridSanz Scovino, José Ignacio[Adquisición y reciclaje de fósforo en sistemas de cultivos y pasturas en suelos tropicales de baja fertilidad]Adquisición y reciclaje de fósforo en sistemas de cultivos y pasturas en suelos tropicales de baja fertilidad

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
Rao, Idupulapati M.Friesen, Dennis K.Osaki, Mitsuru[Plant adaptation to phosphorus: Limited tropical soils]Plant adaptation to phosphorus: Limited tropical 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
Rao, Idupulapati M.Friesen, Dennis K.Horst, Walter J.[Opportunities for germplasm selection to influence phosphorus acquisition from low-phosphorus soils]Opportunities for germplasm selection to influence phosphorus acquisition from low-phosphorus soils
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

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