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In the Brazilian savanna, there is a risk that soil fertility of pastures declines to a level below that of the native savanna because of low fertilizer application. To evaluate biophysical pasture sustainability we compared regularly fertilized productive pasture (PP), degraded pasture fertilize...


Lilienfein, JWilcke, W.Vilela, LAyarza, Miguel AngelCarmo Lima, S. doZech, W.[Soil fertility under native cerrado and pasture in the Brazilian savanna]Soil fertility under native cerrado and pasture in the Brazilian savanna

A study was carried out in the Sudan savanna zone in the Upper East Region of Ghana to assess the rate of sediment-bound nutrient export (NE) into five small reservoirs (Dua, Doba, Zebilla, Kumpalgogo and Bugri) and to analyse the implications of this export. The catchment soils and reservoir sed...


Amegashie, BKQuansah, CAgyare, W.A.Tamene, LulsegedVlek, Paul L.G.[Sediment-bound nutrient export from five small reservoir catchments and its implications for the Sudan savanna zone of Ghana]Sediment-bound nutrient export from five small reservoir catchments and its implications for the Sudan savanna zone of Ghana
Rivera, M.Amézquita Collazos, EdgarBernal Riobo, Jaime HumbertoRao, Idupulapati M.[Las sabanas de los Llanos Orientales de Colombia: caracterización biofísica e importancia para la producción agropecuaria]Las sabanas de los Llanos Orientales de Colombia: caracterización biofísica e importancia para la producción agropecuaria
Pizarro, Esteban A.[Red Internacional de Evaluación de Pastos Tropicales. Reunión (2, 1982, Cali, Colombia). Resultados 1979-1982]Red Internacional de Evaluación de Pastos Tropicales. Reunión (2, 1982, Cali, Colombia). Resultados 1979-1982
Amézquita Collazos, Edgar[Propiedades físicas de los suelos de los Llanos Orientales y sus requerimientos de labranza]Propiedades físicas de los suelos de los Llanos Orientales y sus requerimientos de labranza

There are several indications that legumes are capable of accessing sparingly soluble phosphorus (P) in the soil through root-induced processes. We hypothesize that this plant-induced mobilization of P can be demonstrated if the plant accessible P assessed by isotopic dilution ( L-value ) exceeds...


Pypers, PieterLoon, L. vanDiels, J.Abaidoo, R.C.Smolders, EMerckx, R.[Plant-available P for maize and cowpea in P-deficient soils from the Nigerian Northern Guinea savanna : Comparison of E- and L-values]Plant-available P for maize and cowpea in P-deficient soils from the Nigerian Northern Guinea savanna : Comparison of E- and L-values

The objective of this study was to estimate the results of the upland rice (Oryza sativa L.) breeding program conducted by the Brazilian Agricultural Research Corporation (Embrapa) and collaborators over the period of 1984 to 2009 covering 25 annual steps of improvement. The best lines generated ...


Breseghello, FlávioPeixoto de Morais, OValle Pinheiro, PSimoes Silva, CMaia de Castro, E. daGuimaraes, Elcio PerpétuoPereira de Castro, APereira, JAMatos Lopes, A. deUtumi, MMPereira de Oliveira, J[Results of 25 years of upland rice breeding in Brazil]Results of 25 years of upland rice breeding in Brazil
Huertas Ramirez, H[Digestibilidad in vitro de las gramíneas nativas Axonopus purpussi, Metz y Trachypogon vestitus, Anders en suelos de sabana de los Llanos Orientales. Tesis (M.Sc.)]Digestibilidad in vitro de las gramíneas nativas Axonopus purpussi, Metz y Trachypogon vestitus, Anders en suelos de sabana de los Llanos Orientales. Tesis (M.Sc.)
Winslow, M.D.[Charting a new course: CIAT's initiative in resource management research for Latin America and the Caribbean: a review and status report, 1991 through 1994]Charting a new course: CIAT's initiative in resource management research for Latin America and the Caribbean: a review and status report, 1991 through 1994

Se presenta un manual, el segundo de una serie programada para uso de la Red Internacional de Evaluacion de Pastos Tropicales, en el cual se resumen las metodologias acordadas en la pasada Reunion de Trabajo de la Red (oct. 1979) para las evaluaciones agronomicas en los ensayos regionales A y B. ...


Toledo, José M.[Manual para la evaluacion agronomica]Manual para la evaluacion agronomica

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