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This audiotutorial unit (cassette, printed script, 70 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 recorder. Each unit is available from the D...

Esta unidad audiotutorial (cinta magnetofonica, guion, 70 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...


Ceballos L., Luis FernandoRomero S., Alfredo A.Bellotti, Anthony C.Arias V., Bernardo[El Control de Erinnyis ello (L) gusano cachón de la yuca [conjunto audiotutorial]]El Control de Erinnyis ello (L) gusano cachón de la yuca [conjunto audiotutorial]

Information on some diseases and pests that attack cassava, as well as the symptoms induced by nutritional deficiencies and toxicities and damage resulting from the misuse of herbicides are given in this manual. Specific and general recommendations regarding the control of the described problems ...

En este manual se presenta informacion sobre algunas de las enfermedades y plagas que atacan a la yuca, como tambien los sintomas inducidos por deficiencias y toxicidades nutricionales y danos debidos al uso incorrecto de los herbicidas. Se incluyen recomendaciones generales y especificas para el...


Lozano, J.C.Bellotti, Anthony C.Reyes, J.A.Howeler, Reinhardt H.Leihner, D.E.Doll, J.[Problemas en el cultivo de la yuca]Problemas en el cultivo de la yuca

The reasons an integrated pest and disease control in cassava is justified are analyzed. Some cultural practices are listed that would lessen the problems caused by negative production factors within an ecosystem and would give high stable yields. Recommendations are given to maintain and enrich ...


Lozano, J.C.Bellotti, Anthony C.[Integrated control of diseases and pest of cassava (Manihot esculenta Crantz)]Integrated control of diseases and pest of cassava (Manihot esculenta Crantz)

The management of a sudden high population of the cassava hornworm (Erinnyis ello) is discussed on the basis of data referring to those occurring in Santander de Quilichao in May 1980, in plantations at the exptl. station at the Centro lnternacional de Agricultura Tropical (CIAT), and in a neighb...


Bellotti, Anthony C.[Manejo de una explosion del gusano cachon Erinnyis ello (L) (Lepidoptera: Sphingidae)]Manejo de una explosion del gusano cachon Erinnyis ello (L) (Lepidoptera: Sphingidae)

Cassava mealybugs constitute one of the major production problems of cassava in Africa and the Americas. The species already identified that attack cassava in the Americas include Phenacoccus manihoti, P. herreni, P. gossypii, and P. grenadensis. Since its introduction into Africa, P. manihoti ha...


Bellotti, Anthony C.Reyes, J.A.Varela, Ana M.Castillo, J.[El piojo harinoso (Phenacoccus sp.) de la yuca; una de las plagas agricolas mas importantes en el mundo]El piojo harinoso (Phenacoccus sp.) de la yuca; una de las plagas agricolas mas importantes en el mundo

A program of biological control of the cassava hornworm appears feasible. The following biological control agents have been found to reduce hornworm populations effectively: Trichogramma spp. (egg parasites), Apanteles spp. (larval parasites), Polistes spp. (larval predators) and Bacillus thuring...


Bellotti, Anthony C.[Control biologico del gusano cachon (Erinnyis ello)]Control biologico del gusano cachon (Erinnyis ello)

Oligota minuta is one of the major dominant predators of Mononychellus tanajoa, consuming eggs and movil stages of the mite. At the Centro Internacional de Agricultura Tropical, Palmira, Colombia, Oligota adult populations on cassava var. M Col 113 were counted 4 times/day (6 am, 9 am, 1 pm, and ...


Guerrero, JMBellotti, Anthony C.Reyes, J.A.[Fluctuacion y distribucion de las poblaciones de Oligota minuta Cam. (Coleoptera: Staphilinidae) predator de Mononychellus tanajoa Bondar (Acarina: Tetranychidae)]Fluctuacion y distribucion de las poblaciones de Oligota minuta Cam. (Coleoptera: Staphilinidae) predator de Mononychellus tanajoa Bondar (Acarina: Tetranychidae)

The reasons an integrated pest and disease control in cassava is justified are analyzed. Some cultural practices are listed that would lessen the problems caused by negative production factors within an ecosystem and would give high stable yields. Recommendations are given to maintain and enrich ...

Se analizan las razones que justifican un control integrado de plagas y enfermedades de la yuca. Se enumeran algunas practicas culturales que reducirian los problemas ocasionados por los factores negativos de la produccion en un ecosistema y originarian altos rendimientos estables. Se presentan r...


Lozano, J.C.Bellotti, Anthony C.[Control integrado de enfermedades y pestes en la yuca (Manihot esculenta Crantz)]Control integrado de enfermedades y pestes en la yuca (Manihot esculenta Crantz)

Aspects related to pest management in cassava are discussed: (1) favorable factors involved insect/plant/environment interactions; (2) characteristics of insect survival; (3) integrated, biological control and pest management. On the basis of research conducted by CIAT on Erinnyis ello, a managem...

Se discuten aspectos relacionados con el manejo de plagas en la yuca: 1) factores favorables involucrados en la interaccion insecto/planta/medio ambiente; 2) caracteristicas de supervivencia de los insectos; 3) control integrado, biologico y manejo de plagas. Con base en las investigaciones reali...


Bellotti, Anthony C.Reyes Q., Jesús AntonioArias V., BernardoVargas H., Octavio[Manejo de plagas en yuca]Manejo de plagas en yuca

The effect of the application of ethyl parathion, trichlorfon, diflubenzuron, and Bacillus thuringiensis var. kurstaki to eggs of Erinnyis ello, before and after being parasitized by Trichogramma exiguum and Telenomus sphingis, was studied. Insecticides were also tested on the adults of these par...


Urias López, Mario AlfonsoBellotti, Anthony C.Bravo Mojica, HiramCarrillo Sánchez, José Luis[Impacto de insecticidas sobre tres parasitoides de Erinnyis ello (L.) gusano de cuerno de la yuca]Impacto de insecticidas sobre tres parasitoides de Erinnyis ello (L.) gusano de cuerno de la yuca

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