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A system for rapid propagation of cassava is described, including detailed characteristics of the installations (propagation chambers and rooting area), materials needed and process to be followed. The advantages of this system are: (1) it is the only way of rapidly propagating promissory var. in...

Se describe un sistema de propagacion rapida de la yuca, incluyendo caracteristicas detalladas de las instalaciones (camara de propagacion y area de enraizamiento), materiales requeridos y procedimiento que se debe seguir. Las ventajas de este sistema son: 1) es la unica manera de propagar var. p...


Cock, James H.[Propagacion rapida de la yuca]Propagacion rapida de la yuca

A detailed review on cassava production in intercropping systems is given, based on the following aspects: selection of plant types for intercropping; realtive planting time, planting density and pattern (spatial arrangement); mineral nutrition and fertilization, competition for nutrients; pest, ...


Leihner, D.E.Thung, M.Cock, James H.Lynam, John K.[Produccion de yuca en cultivos multiples]Produccion de yuca en cultivos multiples

Different physiological characteristics of the cassava plant, which can be used as selection parameters, are reviewed, namely LAI, HI, biomass production, plants with amphistomatic leaves, and C4 photosynthesis. Experience indicates that it is better to select var. showing lower yield reduction u...

Se revisan diferentes caracteristicas fisiologicas de la planta de yuca que se pueden utilizar como parametros de seleccion: IAF, IC, produccion de biomasa, plantas con hojas amfistomatosas y fotosintesis C4. Se enfatiza que se debe tratar de seleccionar var. que presenten menor disminucion en co...


Cock, James H.El-Sharkawy, Mabrouk A.[Caracteristicas fisiologicas para la seleccion de yuca]Caracteristicas fisiologicas para la seleccion de yuca

Development models are outlined to shed light on cassava's potential to generate economic growth. Since small cassava producers are to a large extent marginalized from the development process in Latin America, the CIAT cassava program has tried to define development strategies that are clearly or...

Se esbozan algunos modelos de desarrollo para aclarar el potencial de la yuca en la generacion de crecimiento economico. Debido a la marginacion de los pequenos agricultores de yuca del proceso de desarrollo en America Latina, el programa de yuca del CIAT ha tratado de definir estrategias de desa...


Cock, James H.[El contexto del desarrollo]El contexto del desarrollo

Some of the actual and potential markets for cassava in tropical Latin America are discussed. Data are presented for Brazil (the world's largest cassava producer), Paraguay (the Latin American country with the highest per capita cassava production), the Andean countries, Central America, and the ...

Se discuten algunos de los mercados actuales y potenciales para la yuca en America Latina tropical. Se presentan datos para Brasil (el mayor productor de yuca del mundo), Paraguay (el pais latinoamericano con la mayor produccion de yuca per capita), los paises andinos, America Central y el Caribe...


Cock, James H.Lynam, John K.[La yuca en la economia de America Latina]La yuca en la economia de America Latina

A series of trials were carried out using cassava. Crop growth rate increased with leaf area up to LAI 4; root growth rate increased up to LAI 3-3.5, then declined. LAI is determined by leaf size, leaf formation rate and individual leaf life. Leaf size reached a max 4 mo after planting and then d...


Cock, James H.Franklin, D.Sandoval, G.Juri, P.[The ideal cassava plant for maximum yield]The ideal cassava plant for maximum yield

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...


El-Sharkawy, Mabrouk A.Cock, James H.[Response of cassava to water stress]Response of cassava to water stress

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...


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)

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 ...


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

This audiotutorial unit (cassette, printed script, 76 color slides, study guide, self-evaluation test), prepared by the Communications Support Unit at CIAT, is available for use with a manually or automatically synchronized slide projector/cassette tape reccorder. Each unit is a vailabIe from the...

Esta unidad audiotutorial (cinta magnetofonica, guion, 76 transparencias a color, guia de estudio, auto-evaluacion), preparada por la Unidad de Comunicaciones del CIAT, esta disponible para usarla en sincronizacion automatica o manual por medio de un proyector de transparencias o una grabadora de...


Cock, James H.Domínguez O., Carlos E.Ceballos L., Luis FernandoArregocés, Oscar[Un tipo ideal de planta de yuca para rendimiento máximo [conjunto audiotutorial]]Un tipo ideal de planta de yuca para rendimiento máximo [conjunto audiotutorial]

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