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Ospina O., Héctor FabioSchoonhoven, Aart vanCardona Mejía, CésarGarcía, J.E.Flor Montoya, Carlos A.[Guía de estudio para ser usada como complemento de la unidad audiotutorial sobre el mismo tema][Principales insectos que atacan el grano de fríjol almacenado y su control]Principales insectos que atacan el grano de fríjol almacenado y su control

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

This audiotutorial unit (cassette, printed script, 140 color slides, study guide, self-evaluation test), prepared by the Communication 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, 140 transparencias a color, guia de estudio, auto-evaluacion), preparada por la Unidad de Comunicaciones del CIAT, esta disponible para uso en sincronizacion automatica o manual por medio de un proyector de transparencias y una grabadora de c...


Ospina O., Héctor FabioSchoonhoven, Aart vanCardona Mejía, CésarGarcía, Jorge E.Flor Montoya, Carlos A.[Principales insectos que atacan el grano de fríjol almacenado y su control [conjunto audiotutorial]]Principales insectos que atacan el grano de fríjol almacenado y su control [conjunto audiotutorial]

Strategies, achievements, and challenges in bean research at CIAT are analyzed and discussed. Research strategy emphasis has been to reduce losses caused by diseases and pests. This strategy has, in general, not lead to yield increases. A change in research emphasis is, therefore, proposed. This ...


Schoonhoven, Aart van[Strategies, achievements and challanges in bean research; the CIAT perspective]Strategies, achievements and challanges in bean research; the CIAT perspective

Schoonhoven, Aart vanBellotti, Anthony C.Cardona Mejía, CésarMorales, Francisco José[CIAT´s contribution to the detection and control of invasive pests in the greater Caribbean region]CIAT´s contribution to the detection and control of invasive pests in the greater Caribbean region

Resistance of 360 var. of Phaseolus vulgaris to Empoasca kraemeri was evaluated in the greenhouse. Subsequent field evaluations were made of 30 promising var. when 30 days old. Seedlings in the greenhouse were infested with field-collected adults for 3 days, and resistance to 1st generation nymph...


Eskafi, F.M.Schoonhoven, Aart van[Comparison of greenhouse and field resistance of bean varieties to Empoasca kraemeri (Homoptera Cicadellidae)]Comparison of greenhouse and field resistance of bean varieties to Empoasca kraemeri (Homoptera Cicadellidae)

Tropical agroecosystems constitute diversified systems with crops arranged in polycultural patterns. Weeds are important components of these systems and condition insect diversity and stability. In an attempt to gather experimental evidence as a basis for tropical pest management strategies, 9 fi...


Altieri, Miguel A.Doll, J.Schoonhoven, Aart van[Interacciones entre insectos y malezas en mono y policultivos de maiz y frijol]Interacciones entre insectos y malezas en mono y policultivos de maiz y frijol
Ospina O., Héctor FabioSchoonhoven, Aart vanGómez, L.A.Valderrama, R[Guía de estudio para ser usada como complemento de la unidad audiotutorial sobre el mismo tema][Descripción y daños de las plagas que atacan el fríjol]Descripción y daños de las plagas que atacan el fríjol

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