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 Fernando
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Romero S., Alfredo A.
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Bellotti, Anthony C.
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Arias V., Bernardo
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[El Control de Erinnyis ello (L) gusano cachón de la yuca [conjunto audiotutorial]]
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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.
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Bellotti, Anthony C.
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Reyes, J.A.
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Howeler, Reinhardt H.
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Leihner, D.E.
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Doll, J.
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[Problemas en el cultivo de la yuca]
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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.
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Bellotti, Anthony C.
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[Integrated control of diseases and pest of cassava (Manihot esculenta Crantz)]
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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.
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[Manejo de una explosion del gusano cachon Erinnyis ello (L) (Lepidoptera: Sphingidae)]
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Manejo de una explosion del gusano cachon Erinnyis ello (L) (Lepidoptera: Sphingidae)
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...
Based on the considerations related to the characteristics of cassava, centers of origin, and the traditional system of cultivation, several conclusions were made regarding the relationships between the plant and NPFs, constituted by disease and pest pressures and edaphic and climatic factors. It...
Lozano, J.C.
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Byrne, D.
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Bellotti, Anthony C.
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[The relationships between cassava (Manihot esculenta Crantz), ecosystems, diseases and pests and their influence on breeding strategy]
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The relationships between cassava (Manihot esculenta Crantz), ecosystems, diseases and pests and their influence on breeding strategy
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, JM
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Bellotti, Anthony C.
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Reyes, J.A.
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[Fluctuacion y distribucion de las poblaciones de Oligota minuta Cam. (Coleoptera: Staphilinidae) predator de Mononychellus tanajoa Bondar (Acarina: Tetranychidae)]
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Fluctuacion y distribucion de las poblaciones de Oligota minuta Cam. (Coleoptera: Staphilinidae) predator de Mononychellus tanajoa Bondar (Acarina: Tetranychidae)
Aspects related to breeding programs in cassava, the impact of past strategies and exptl results related to them are discussed. Even though sources of resistance have been identified for the majority of the diseases and pests, in addition to tolerance to adverse edaphic and climatic factors, it i...
Lozano, J.C.
,
Byrne, D.
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Bellotti, Anthony C.
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[Cassava/ecosystem relationships and their influence on breeding strategy]
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Cassava/ecosystem relationships and their influence on breeding strategy
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.
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Bellotti, Anthony C.
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[Control integrado de enfermedades y pestes en la yuca (Manihot esculenta Crantz)]
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Control integrado de enfermedades y pestes en la yuca (Manihot esculenta Crantz)
Aspects related to breeding programs in cassava, the impact of past strategies and exptl results related to them are discussed. Even though sources of resistance have been identified for the majority of the diseases and pests, in addition to tolerance to adverse edaphic and climatic factors, it i...
Se discuten ampliamente aspectos relacionados con los programas de mejoramiento genetico de la yuca, el impacto de estrategias pasadas y los resultados experimentales relacionados con estas. Aunque se han identificado fuentes de resistencia a la mayoria de las enfermedades y plagas, ademas de la ...
Lozano, J.C.
,
Byrne, D.
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Bellotti, Anthony C.
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[Influencia del ecosistema en las estrategias del mejoramiento genético de la yuca]
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Influencia del ecosistema en las estrategias del mejoramiento genético de la yuca