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Phiri, S ,  Barrios, E. ,  Rao, Idupulapati M. ,  Singh, B.R. ,  [Changes in soil organic matter and phosphorus fractions under planted fallows and a crop rotation system on a Colombian volcanic-ash soil] ,  Changes in soil organic matter and phosphorus fractions under planted fallows and a crop rotation system on a Colombian volcanic-ash soil

Fonte, Steven J. ,  Barrios, E. ,  Six, Johan ,  [Earthworms, soil fertility and aggregate-associated soil organic matter dynamics in the Quesungual agroforestry system] ,  Earthworms, soil fertility and aggregate-associated soil organic matter dynamics in the Quesungual agroforestry system

Basamba, T.A. ,  Barrios, E. ,  Amézquita Collazos, Edgar ,  Rao, Idupulapati M. ,  Singh, B.R. ,  [Efecto de sistemas de labranza en el rendimiento de maíz en un oxisol de la sabana colombiana: fraccionamiento de materia orgánica y fósforo del suelo] ,  Efecto de sistemas de labranza en el rendimiento de maíz en un oxisol de la sabana colombiana: fraccionamiento de materia orgánica y fósforo del suelo

Delve, Robert J. ,  Probert, ME ,  Cobo Borrero, Juan G. ,  Ricaurte Oyola, José Jaumer ,  Rivera Pena, M ,  Barrios, E. ,  Rao, Idupulapati M. ,  [Simulating phosphorus responses in annual crops using APSIM : Model evaluation on contrasting soil types] ,  Simulating phosphorus responses in annual crops using APSIM : Model evaluation on contrasting soil types

Rao, Idupulapati M. ,  Barrios, E. ,  Oberson, Astrid ,  Ayarza, Miguel Angel ,  Friesen, Dennis K. ,  [Opportunities for increasing the efficiency of phosphorus use in tropical agroecosystems] ,  Opportunities for increasing the efficiency of phosphorus use in tropical agroecosystems

Basamba, T.A. ,  Barrios, E. ,  Amézquita Collazos, Edgar ,  Rao, Idupulapati M. ,  Singh, B.R. ,  [Tillage effects on maize yield in a Colombian savanna oxisol : Soil organic matter and P fractions] ,  Tillage effects on maize yield in a Colombian savanna oxisol : Soil organic matter and P fractions

Basamba, T.A. ,  Barrios, E. ,  Singh, B.R. ,  Rao, Idupulapati M. ,  [Impact of planted fallows and a crop rotation on nitrogen mineralization and phosphorus and organic matter fractions on a Colombian volcanic-ash soil] ,  Impact of planted fallows and a crop rotation on nitrogen mineralization and phosphorus and organic matter fractions on a Colombian volcanic-ash soil

Rao, Idupulapati M. ,  Barrios, E. ,  Amézquita Collazos, Edgar ,  Friesen, Dennis K. ,  Thomas, Richard J. ,  Oberson, Astrid ,  Singh, 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