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Posso G, CEValor, J.F.Schoonhoven, Aart van[Resistencia de Phaseolus vulgaris L. silvestre y progenies con frijol cultivado al gorgojo comun Acanthoscelides obtectus (Say) a nivel de campo y laboratorio]Resistencia de Phaseolus vulgaris L. silvestre y progenies con frijol cultivado al gorgojo comun Acanthoscelides obtectus (Say) a nivel de campo y laboratorio

The main priority of efforts in genetic improvement of beans is to increase the production in areas where it is currently cultivated. The environment in those areas has unfavorable climatic conditions for the crop and instead, favorable for the disease- insect complex attacking it. Through the co...


Temple, SSchwartz, Howard F.Morales, Francisco JoséCardona Mejía, CésarSchoonhoven, Aart van[Orientacion del mejoramiento de frijol en los climas calidos]Orientacion del mejoramiento de frijol en los climas calidos

Information is given on the situation of beans in Latin America, in terms of producing regions, national consumption and exports in various countries, classes of beans grown, production structure, and constraints to production. Main limitations to bean production are diseases and insect pests, wh...

Se informa sobre la situacion del cultivo de frijol en America Latina, en terminos de regiones productoras, consumo nacional y exportacion de frijol en varios paises, clases de frijol cultivadas, estructura de la produccion y principales limitaciones a la produccion. Las principales limitaciones ...


Schoonhoven, Aart vanVoysest Voysest, Oswaldo[Common beans in Latin America and their constraints]Common beans in Latin America and their constraints

Information on bruchids on bean grain (Zabrotes subfasciatus and Acanthoscelides obtectus) is given for farmers, explaining aspects such as: oviposition behavior, morphological characteristics of the adult, type of damage, and adaptation to temp. Practices to avoid or prevent damage by bruchids a...


Alomia de Gutierrez, B.Schoonhoven, Aart van[Proteja su cosecha de frijol contra el ataque de los gorgojos]Proteja su cosecha de frijol contra el ataque de los gorgojos

An expt. to study the background soil effects associated with var. resistance in bean pest populations, virus incidence and yield was carried out at the Centro Internacional de Agricultura Tropical (CIAT), Palmira, Colombia from Jan.-March, 1978. The effect of the treatments and of the var. on Em...


Hohmann, C.L.Schoonhoven, Aart vanCardona, C.[Manejo de pragas do feijoeiro (Phaseolus vulgaris, Linnaeus, 17S3) atraves da utilizacao de cobertura de solo associada a resistwncia varietal]Manejo de pragas do feijoeiro (Phaseolus vulgaris, Linnaeus, 17S3) atraves da utilizacao de cobertura de solo associada a resistwncia varietal

The effect of maize/bean intercropping on Empoasca kraemeri population and damage, populations of other phytophagous insects, the parasitic action of Anagrus sp. on E. kraemeri, ambient temp. and RH, light intensity, and bean leaf temp. was observed. Two planting dates and 3 maize densities in 2 ...


Hernández R., J.C.Vera G., J.Schoonhoven, Aart vanCardona Mejía, César[Efecto de la asociacion maiz-frijol sobre poblaciones de insectos plagas, con enfasis en Empoasca kraemeri Ross & Moore]Efecto de la asociacion maiz-frijol sobre poblaciones de insectos plagas, con enfasis en Empoasca kraemeri Ross & Moore

Approx 20 insects and mites were found attacking cassava in several regions of Colombia at different growth stagcs and seasons. Thrips (Frankliniella williamsi), gall midges (Cecidomyiidae) and whiteflies (Bemisia sp. and Trialeurodes sp.) were present in greater than 50 percent of the plantation...


Díaz, R.O.Bellotti, Anthony C.Schoonhoven, Aart van[Insectos y acaros que atacan el cultivo de la yuca en Colombia]Insectos y acaros que atacan el cultivo de la yuca en Colombia

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