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Journal Article 1987

Autor: Porto, M.C.M. El-Sharkawy, Mabrouk A. Cock, James H. Hernández, A. del P. Cadena, G. de

Growth and N uptake in pot-grown maize, beans, and cassava were evaluated under 2 levels of soil N at CIAT-Palmira (Colombia). The lower amount of the element reduced its uptake by the 3 species, resulting in lower tissue concn., especially in the leaves. Under low N, DM accumulation was also red...

Enlace original: https://cgspace.cgiar.org/handle/10568/88594

Investigación en Agricultura
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Porto, M.C.M. ,  El-Sharkawy, Mabrouk A. ,  Cock, James H. ,  Hernández, A. del P. ,  Cadena, G. de ,  [Crescimento, fotossintese e eficiencia do uso de nitrogenio em milho, feijao e mandioca submetidos a dois niveis de N no solo] ,  Crescimento, fotossintese e eficiencia do uso de nitrogenio em milho, feijao e mandioca submetidos a dois niveis de N no solo
Journal Article 1997

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

Four contrasting varieties of cassava (Manihot esculenta Crantz) were grown for ten months over two consecutive seasons in hillside Colombia with or without nitrogen, phosphorus and potassium fertilization. Sequential harvests were every two months. The two varieties well adapted to acid soils (C...

Enlace original: https://cgspace.cgiar.org/handle/10568/43248

Investigación en Agricultura
Enlace permanente
Pellet, D ,  El-Sharkawy, Mabrouk A. ,  [Cassava varietal response to fertilization: Growth dynamics and implications for cropping sustainability] ,  Cassava varietal response to fertilization: Growth dynamics and implications for cropping sustainability
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
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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 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

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