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Ceballos, L.F.Domínguez O., Carlos E.Lozano, J.C.[Descripción de las enfermedades de la yuca [conjunto audiotutorial]]Descripción de las enfermedades de la yuca [conjunto audiotutorial]
Lozano, J.C.Toro, Julio C.Castro Merino, A.Bellotti, Anthony C.Ceballos, L.F.Fernández, F.O.[Study guide to be used as a supplement to the audiotutorial unit on the same topic][Selection and preparation of cassava cuttings for planting]Selection and preparation of cassava cuttings for planting
Lozano, J.C.Bellotti, Anthony C.Schoonhoven, Aart vanHoweler, Reinhardt H.Doll, Jerry D.Howell, DBates, T.[Problemas no cultivos da mandioca]Problemas no cultivos da mandioca
Ceballos, L.F.Lozano, J.C.[Selección y preparación de estacas de yuca para siembra [conjunto audiotutorial]]Selección y preparación de estacas de yuca para siembra [conjunto audiotutorial]
Lozano, J.C.Byrne, D.Bellotti, Anthony C.[Influencia del ecosistema en las estrategias del mejoramiento genético de la yuca]Influencia del ecosistema en las estrategias del mejoramiento genético de la yuca

Data on max. and min. severity of attacks by Xanthomonas campestris pv. manihotis, Choanephora cucurbitarum, and Sphaceloma manihoticola were gathered on commercial plantations located in 4 regions of Sucre, Colombia. Regional clones Venezolana and Preta were used. In the region of Bongo, neither...


Laberry, R.Lozano, J.C.[Efecto del origen del material de siembra y el sistema de cultivo en la severidad e incidencia del anublo bacterial, el anublo fungoso y el superalargamiento de la yuca]Efecto del origen del material de siembra y el sistema de cultivo en la severidad e incidencia del anublo bacterial, el anublo fungoso y el superalargamiento de la yuca

Greenhouse studies on pathogenic variability of Xanthomonas manihotis did not reveal the occurrence of distinct pathogenic races. The non-race status of the pathogen suggests that CBB could be well-controlled in the field by using known levels of genotype resistance in specific ecosystems and by ...


Elango, FritzLozano, J.C.[Pathogenic variability of Xanthomonas manihotis, the causal agent of cassava bacterial blight]Pathogenic variability of Xanthomonas manihotis, the causal agent of cassava bacterial blight

Isolates of Sphaceloma and Elsinoë spp. were collected from Euphorbia brasiliensis, Eu. heterophylla, Eu. pulcherrima, Jatropha aconitifolia var. papaya, Manihot carthaginensis, and M. esculenta in Mexico, Costa Rica, the Dominican Republic, and Colombia. M. carthaginensis and J. aconitifolia var...


Zeigler, Robert S.Lozano, J.C.[The relationship of some Elsinoë and Sphaceloma species pathogenic on cassava and other Euphorbiaceae in Central and South America]The relationship of some Elsinoë and Sphaceloma species pathogenic on cassava and other Euphorbiaceae in Central and South America

The incidence and severity of several diseases affecting cassava in monoculture and in association with maize and/or yam in the departments of Cordoba, Bolivar, Sucre, and Atlantico (Colombia) were assessed. Leaf spots (brown leaf spot, white leaf spot, blight leaf spot) and CBB were the most com...


Laberry, R.Lozano, J.C.[Enfermedades en cultivos de yuca asociados con maiz y name en Cordoba, Bolivar, Sucre y Atlantico]Enfermedades en cultivos de yuca asociados con maiz y name en Cordoba, Bolivar, Sucre y Atlantico

The predominant farming system in La Colorada (Magdalena, Colombia), where cassava is a subsistence crop, is briefly reviewed. The intensive land use has caused soil leaching and infestation with root pathogens such as Diplodia manihotis and Fusarium oxysporum and cassava production has decreased...


Laberry, R.Lozano, J.C.Acosta, A.El Sharkawy, M.[Sistema integral de produccion de yuca para La Colorada (Magdalena) una zona infestada de Diplodia manihotis y Fusarium oxysporum]Sistema integral de produccion de yuca para La Colorada (Magdalena) una zona infestada de Diplodia manihotis y Fusarium oxysporum

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