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, Fritz
,
Lozano, J.C.
,
[Pathogenic variability of Xanthomonas manihotis, the causal agent of cassava bacterial blight]
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Pathogenic variability of Xanthomonas manihotis, the causal agent of cassava bacterial blight
A Phenaccocus herreni Cox & Williams population studied in Colombia, S.A., across a complete cassava crop cycle did not exceed 81 mealybugs/plant. P. herreni densities in Colombia were highest in the dry season, as were levels of parasitism by the encyrtids Acerophagus coccois Smith and Epidinoca...
Driesche, R.G. van
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Bellotti, Anthony C.
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Castillo, J.
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Herrera, C.J.
,
[Estimating total losses from parasitoids for a field population of a continuously breeding insect, cassava mealybug, Phenacoccus herreni, (Homoptera: Pseudococcidae) in Colombia, S.A.]
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Estimating total losses from parasitoids for a field population of a continuously breeding insect, cassava mealybug, Phenacoccus herreni, (Homoptera: Pseudococcidae) in Colombia, S.A.
Parameters for the production of high-quality cassava seed are presented. The 3 aspects considered regarding the seed should be genetic (branching habit and overall vigor), physiological (seed age, nutrition, and viability, age of mother plant), and sanitary. Both systemic (fungi, bacteria, mycop...
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.
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Acosta, A.
,
El Sharkawy, M.
,
[Sistema integral de produccion de yuca para La Colorada (Magdalena) una zona infestada de Diplodia manihotis y Fusarium oxysporum]
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Sistema integral de produccion de yuca para La Colorada (Magdalena) una zona infestada de Diplodia manihotis y Fusarium oxysporum
In Rayong, Thailand, a regional workshop was carried out with breeders and agronomists of the various cassava producing countries in southern Asia in an attempt to establish a cassava research network to increase cassava productivity in the region and improve the prevailing standard of living. Ad...
Howeler, Reinhardt H.
,
Kawano, K
,
[Regional Workshop on Cassava Breeding and Agronomy Research in Asia (1987, Rayong, Thailand). Cassava breeding and agronomy research in Asia: Proceedings of a regional workshop]
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Regional Workshop on Cassava Breeding and Agronomy Research in Asia (1987, Rayong, Thailand). Cassava breeding and agronomy research in Asia: Proceedings of a regional workshop
Delegates from Brazil, Colombia, Cuba, Ecuador, Mexico, Nicaragua, Panama, and Paraguay met to examine the systems used in the planning and operation of integrated cassava programs at the national level. Strategies were compared, common elements were defined, and an attempt was made to define an ...
Pérez C., C.A.
,
[Metodologías aplicadas a proyectos integrados de yuca: Memorias del congreso latinoamericano celebrado en Villahermosa, México, 26 a 28 de octubre de 1987]
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Metodologías aplicadas a proyectos integrados de yuca: Memorias del congreso latinoamericano celebrado en Villahermosa, México, 26 a 28 de octubre de 1987
Cassava breeders and scientists in related fields from the 3 major cassava-producing continents (America, Africa, and Asia) were brought together for the lst time to discuss the latest advances in cassava breeding research and exchange ideas on future priorities. Most breeding programs now orient...
Hershey, Clair H.
,
[Cassava breeding: A multidisciplinary review: Proceedings of a workshop, held in the Philippines, 4-7, March 1985]
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Cassava breeding: A multidisciplinary review: Proceedings of a workshop, held in the Philippines, 4-7, March 1985
The papers presented at the workshop for improving the diagnostic capacity of root and tuber crop production systems are included as well as summaries of the discussion sessions and resulting recommendations. Participants came from Brazil, Ecuador, Mexico, Panama, Peru, Argentina, Colombia, Parag...
Moreno, R.A.
,
[Taller de trabajo para mejorar la capacidad de diagnóstico de sistemas de producción de raíces y tubérculos : Memorias, Cartagena, septiembre 12-16, 1988]
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Taller de trabajo para mejorar la capacidad de diagnóstico de sistemas de producción de raíces y tubérculos : Memorias, Cartagena, septiembre 12-16, 1988
Romanoff, SA
,
Toro, G
,
[La yuca en la costa ecuatoriana y sus perspectivas agroindustriales : Memorias del primer seminario anual sobre yuca en Portoviejo, octubre 28 al 31, 1985]
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La yuca en la costa ecuatoriana y sus perspectivas agroindustriales : Memorias del primer seminario anual sobre yuca en Portoviejo, octubre 28 al 31, 1985
A complete set of guidelines is provided for conducting cassava regional trials. In addition to general guidelines on site selection, exptl. design, planting and harvesting time, and others, specific recommendations are given on technology to be used for the different agronomic practices required...