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Friesen, Dennis K.Thomas, Richard J.Rivera, M.Asakawa, N.Bowen, W.[Dinámicas de nitrógeno en monocultivos y cultivos en rotación en oxisoles de los Llanos Orientales de Colombia]Dinámicas de nitrógeno en monocultivos y cultivos en rotación en oxisoles de los Llanos Orientales de Colombia

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
Friesen, Dennis K.Ayarza, Miguel AngelThomas, Richard J.Amézquita Collazos, EdgarSanz Scovino, José Ignacio[Strategic systems research for the Latin American savannas]Strategic systems research for the Latin American savannas

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
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
Friesen, Dennis K.Amézquita Collazos, EdgarRao, Idupulapati M.Bernal Riobo, Jaime Humberto[Culticore, Ensayo de largo plazo para el desarrollo de sistemas de producción sostenibles en suelos ácidos de sabanas]Culticore, Ensayo de largo plazo para el desarrollo de sistemas de producción sostenibles en suelos ácidos de sabanas

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