Descubre y comparte nuestro conocimiento público

Se han encontrado 22 recursos

Resultados de búsqueda

Journal Article 2002

Autor: El-Sharkawy, Mabrouk A. Cadavid López, Luis Fernando

A two-year field trial was conducted to study the effects of prolonged water stress on cassava (Manihot esculenta) productivity, and on nutrient uptake and use efficiency. Four contrasting cultivars were supplied with adequate fertilization and watering, except when water was excluded by covering...

Enlace original: https://cgspace.cgiar.org/handle/10568/44049

Investigación en Agricultura
Enlace permanente
El-Sharkawy, Mabrouk A. ,  Cadavid López, Luis Fernando ,  [Response of cassava to prolonged water stress imposed at different stages of growth] ,  Response of cassava to prolonged water stress imposed at different stages of growth
Journal Article 1987

Autor: El-Sharkawy, Mabrouk A. Cock, James H.

Cassava (Manihot esculenta Crantz) is a staple food for a large sector of human population in the tropics. It is widely produced for its starchy roots by small farmers over a range of environments on poor infertile soils with virtually no inputs. It is highly productive under favorable conditions...

Enlace original: https://cgspace.cgiar.org/handle/10568/44051

Investigación en Agricultura
Enlace permanente
El-Sharkawy, Mabrouk A. ,  Cock, James H. ,  [Response of cassava to water stress] ,  Response of cassava to water stress
Journal Article 1994

Autor: Pellet, D El-Sharkawy, Mabrouk A.

Two contrasting clones of cassava (Manihot esculenta) were reciprocally grafted to test the hypothesis that the yield of cassava is limited by the number of storage roots. Effects of the root sink on leaf gas exchange were also tested under field conditions using a portable infra-red gas analyzer...

Enlace original: https://cgspace.cgiar.org/handle/10568/44105

Investigación en Agricultura
Enlace permanente
Pellet, D ,  El-Sharkawy, Mabrouk A. ,  [Sink-source relations in cassava: Effects of reciprocal grafting on yield and leaf photosynthesis] ,  Sink-source relations in cassava: Effects of reciprocal grafting on yield and leaf photosynthesis
Journal Article 1989

Autor: Guzmán R., G. El-Sharkawy, Mabrouk A.

Using the infra-red gas analysis system, the rate of CO2 uptake, transpiration, leaf conductance and water use efficiency were determined on attached leaves of cassava cv. MCol 1522 and CG 403-18, which were grown in pots left outdoors. In the stress treatment, the water was withheld from the fou...

Enlace original: https://cgspace.cgiar.org/handle/10568/88650

Investigación en Agricultura
Enlace permanente
Guzmán R., G. ,  El-Sharkawy, Mabrouk A. ,  [Efecto de la disponibilidad hidrica del suelo sobre la anatomia foliar y el intercambio gaseoso de dos cultivares de yuca (Manihot esculenta Crantz)] ,  Efecto de la disponibilidad hidrica del suelo sobre la anatomia foliar y el intercambio gaseoso de dos cultivares de yuca (Manihot esculenta Crantz)
Journal Article 2014-06

Autor: El-Sharkawy, Mabrouk A.
Enlace original: https://cgspace.cgiar.org/handle/10568/42320

Investigación en Agricultura
Enlace permanente
El-Sharkawy, Mabrouk A. ,  [Global warming: causes and impacts on agroecosystems productivity and food security with emphasis on cassava comparative advantage in the tropics - subtropics] ,  Global warming: causes and impacts on agroecosystems productivity and food security with emphasis on cassava comparative advantage in the tropics - subtropics
Journal Article 1987

Autor: Riano, N.M. Cock, James H. López F., Y. El-Sharkawy, Mabrouk A.

To determine the presence of Kranz anatomy, chloroplast structure and distribution in cassava leaf tissues, a selection was made among materials of CIAT`s germplasm bank. Two materials were selected, var. MCol 22 and hybrid CM 507-37; work was also carried out with maize var. Swan Laposta C48B (m...

Enlace original: https://cgspace.cgiar.org/handle/10568/88589

Investigación en Agricultura
Enlace permanente
Riano, N.M. ,  Cock, James H. ,  López F., Y. ,  El-Sharkawy, Mabrouk A. ,  [Anatomia Kranz, estructura y distribucion de cloroplastos en hojas de yuca (Manihot esculenta Crantz)] ,  Anatomia Kranz, estructura y distribucion de cloroplastos en hojas de yuca (Manihot esculenta Crantz)
Journal Article 1987

Autor: Riano, N.M. Cock, James H. López F., Y. El-Sharkawy, Mabrouk A. Bastidas, G.

Cassava, bean, and maize leaves were fed with (14)CO2 in light; the primary products of photosynthesis were identified 5 and 10 s after assimilation. In cassava, approx. 40-60 percent were incorporated in C4 acids with 30-50 percent in phosphoglyceric acid, which indicates that cassava possesses ...

Enlace original: https://cgspace.cgiar.org/handle/10568/88590

Investigación en Agricultura
Enlace permanente
Riano, N.M. ,  Cock, James H. ,  López F., Y. ,  El-Sharkawy, Mabrouk A. ,  Bastidas, G. ,  [Caracteristicas fotosinteticas de la yuca (Manihot esculenta Crantz): Productos iniciales de fijacion con (14)CO2] ,  Caracteristicas fotosinteticas de la yuca (Manihot esculenta Crantz): Productos iniciales de fijacion con (14)CO2
Journal Article 1995

Autor: Mejia de Tafur, MS El-Sharkawy, Mabrouk A. Cantillo, S.H. de

El trabajo de campo se llevó a cabo en dos localidades de la costa Atlántica Colombiana, Riohacha en la Guajira, considerada como zona semi-arida y Santo Tomás Atlántico, como zona sub-húmeda. La respuesta a la humedad relativa se evaluó en diez cultivares, entre las 8 y las 13 horas empleando un...

Enlace original: https://cgspace.cgiar.org/handle/10568/44384

Investigación en Agricultura
Enlace permanente
Mejia de Tafur, MS ,  El-Sharkawy, Mabrouk A. ,  Cantillo, S.H. de ,  [Respuesta fotosintética de la yuca (Manihot esculenta Crantz) en dos ambientes] ,  Respuesta fotosintética de la yuca (Manihot esculenta Crantz) en dos ambientes
Journal Article 1995

Autor: López Molina, J. El-Sharkawy, Mabrouk A. López, Y.

Se estudió el cambio en el contenido nutricional de los tallos de yuca ocasionado por diferentes niveles de fertilización al suelo y el efecto de las estacas obtenidas de esos tallos sobre el cultivo subsiguiente. Los 9 niveles nutricionales del suelo incidieron en la altura y vigor de las planta...

Enlace original: https://cgspace.cgiar.org/handle/10568/44329

Investigación en Agricultura
Enlace permanente
López Molina, J. ,  El-Sharkawy, Mabrouk A. ,  López, Y. ,  [Fertilidad del suelo y calidad nutricional de estacas de yuca (Manihot esculenta Crantz)] ,  Fertilidad del suelo y calidad nutricional de estacas de yuca (Manihot esculenta Crantz)
Journal Article 1997

Autor: Ruppenthal, M Leihner, D.E. Steinmuller, N. El-Sharkawy, Mabrouk A.

Erosion trials under natural rainfall were conducted at two locations in the Andean hillsides of south-west Colombia on moderate slopes. Sediment-bound losses of seven cassava (Manihot esculenta) cropping systems per cropping period ranged from 26 to 1726 kg ha?1 for organic matter, 0.9 to 65.5 k...

Enlace original: https://cgspace.cgiar.org/handle/10568/43642

Investigación en Agricultura
Enlace permanente
Ruppenthal, M ,  Leihner, D.E. ,  Steinmuller, N. ,  El-Sharkawy, Mabrouk A. ,  [Losses of organic matter and nutrient by water erosion in cassava-based cropping systems] ,  Losses of organic matter and nutrient by water erosion in cassava-based cropping systems

Selecciona los documentos para visualizarlos

Nombre del archivo Ver recurso
Marcar todos
Limpiar todo