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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 2009

Autor: Jiménez, D. Cock, James H. Satizabal, HF Barreto Sáenz, MA Pérez Uribe, A. Jarvis, Andy Damme, Patrick van

The Andean blackberry (Rubus glaucus) is an important source of income in hillside regions of Colombia. However, growers have little reliable information on the factors that affect the development and yield of the crop, and therefore there is a dearth of information onhowto effectively manage the...

Enlace original: https://cgspace.cgiar.org/handle/10568/43181

Investigación en Agricultura
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Jiménez, D. ,  Cock, James H. ,  Satizabal, HF ,  Barreto Sáenz, MA ,  Pérez Uribe, A. ,  Jarvis, Andy ,  Damme, Patrick van ,  [Analysis of Andean blackberry (Rubus glaucus) production models obtained by means of artificial neural networks exploiting information collected by small-scale growers in Colombia and publicly available meteorological data] ,  Analysis of Andean blackberry (Rubus glaucus) production models obtained by means of artificial neural networks exploiting information collected by small-scale growers in Colombia and publicly available meteorological data
Book Chapter 1979

Autor: Cock, James H. Lynam, John K.

The possibilities of underdeveloped countries to satisfy their needs for food and to improve the standard of Eving through cassava production are analyzed. The following aspects are studied: potential cassava production (current and potential situation), general research policies and areas (var. ...

Se analizan las posibilidades de los paises subdesarrollados para satisfacer sus necesidades de alimentacion y mejorar el nivel de vida con base en la produccion de yuca. Se contemplan los siguientes aspectos: produccion potencial de la yuca (situacion actual y potencial), politica general de la ...

Enlace original: https://cgspace.cgiar.org/handle/10568/81701

Investigación en Agricultura
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Cock, James H. ,  Lynam, John K. ,  [Potencial futuro e investigacion necesaria para el incremento de la yuca] ,  Potencial futuro e investigacion necesaria para el incremento de la yuca
Book Chapter 1983

Autor: Cock, James H.

Adequate resources and infrastructure for the exchange of cassava germplasm are discussed according to the type of material received (sexual seed, cuttings, and meristems). The final objective of exchanging cassava germplasm among different countries is to obtain improved var.; in order to do so,...

Se analizan los recursos y la infraestructura adecuados para el intercambio de germoplasma de yuca segun el tipo de material que se reciba (semilla sexual, estacas y meristemas). El objetivo final del intercambio de yuca entre diferentes paises es obtener var. mejoradas; para lograrlo se requiere...

Enlace original: https://cgspace.cgiar.org/handle/10568/81752

Investigación en Agricultura
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Cock, James H. ,  [Infraestructura necesaria para el intercambio de germoplasma de yuca] ,  Infraestructura necesaria para el intercambio de germoplasma de yuca
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 1981

Autor: Cock, James H.

Based on research results, the advantages of cassava over other crops, the use of improved cv. for different ecosystems, good management practices, crop protection, and soil fertility requirements are discussed in detail. (CIAT)

Enlace original: https://cgspace.cgiar.org/handle/10568/88493

Investigación en Agricultura
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Cock, James H. ,  [Some factors in successful cropping. 9. Cassava] ,  Some factors in successful cropping. 9. Cassava
Journal Article 2011

Autor: Jiménez, D. Cock, James H. Jarvis, Andy García, J. Satizabal, HF Damme, Patrick van Pérez Uribe, A. Barreto Sáenz, MA
Enlace original: https://cgspace.cgiar.org/handle/10568/43606

Investigación en Agricultura
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Jiménez, D. ,  Cock, James H. ,  Jarvis, Andy ,  García, J. ,  Satizabal, HF ,  Damme, Patrick van ,  Pérez Uribe, A. ,  Barreto Sáenz, MA ,  [Interpretation of commercial production information: a case study of lulo (Solanum quitoense), an under-researched Andean fruit] ,  Interpretation of commercial production information: a case study of lulo (Solanum quitoense), an under-researched Andean fruit
Journal Article 1977

Autor: Cock, James H. Wholey, D.W. Gutiérrez de las Casas, O.

Three varieties in one cassava trial and 5 in another were planted in a sytematic density experiment, which showed that optimum plant density for root yield changes with plant age. Some varieties showed a pronounced optimum plant population whereas others showed a flat-topped response curve. Redu...

Enlace original: https://cgspace.cgiar.org/handle/10568/88331

Investigación en Agricultura
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Cock, James H. ,  Wholey, D.W. ,  Gutiérrez de las Casas, O. ,  [Effects of spacing on cassava (Manihot esculenta)] ,  Effects of spacing on cassava (Manihot esculenta)

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