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...
Porto, M.C.M.
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El-Sharkawy, Mabrouk A.
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Cock, James H.
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Hernández, A. del P.
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Cadena, G. de
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[Crescimento, fotossintese e eficiencia do uso de nitrogenio em milho, feijao e mandioca submetidos a dois niveis de N no solo]
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Crescimento, fotossintese e eficiencia do uso de nitrogenio em milho, feijao e mandioca submetidos a dois niveis de N no solo
As cassava is grown mostly by small resource-limited farmers throughout the tropics on low-fertility soils with little fertilization and, due to the large potassium (K) export in harvested roots, genotypes that tolerate low-K soils and respond to K fertilization are warranted. The objective of th...
El-Sharkawy, Mabrouk A.
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Cadavid López, Luis Fernando
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[Genetic variation within cassava germplasm in response to potassium]
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Genetic variation within cassava germplasm in response to potassium
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...
López Molina, J.
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El-Sharkawy, Mabrouk A.
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López, Y.
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[Fertilidad del suelo y calidad nutricional de estacas de yuca (Manihot esculenta Crantz)]
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Fertilidad del suelo y calidad nutricional de estacas de yuca (Manihot esculenta Crantz)
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...
Ruppenthal, M
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Leihner, D.E.
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Steinmuller, N.
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El-Sharkawy, Mabrouk A.
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[Losses of organic matter and nutrient by water erosion in cassava-based cropping systems]
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Losses of organic matter and nutrient by water erosion in cassava-based cropping systems