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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, FritzLozano, J.C.[Pathogenic variability of Xanthomonas manihotis, the causal agent of cassava bacterial blight]Pathogenic variability of Xanthomonas manihotis, the causal agent of cassava bacterial blight

In 1976 CIAT`s bean program initiated international trials on bean yields and organized the International Bean Yield and Adaptation Nursery (IBYAN) with the following objectives: (a) to evaluate the yield and adaptation of promising germplasm selections under different environmental conditions, r...


Voysest Voysest, Oswaldo[Resultados del primer Vivero Internacional de Rendimiento y Adaptacion de Frijol (Phaseolus vulgaris L.)]Resultados del primer Vivero Internacional de Rendimiento y Adaptacion de Frijol (Phaseolus vulgaris L.)

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
Löhr, BernhardBecerra López Lavelle, Luis AugustoVásquez Ordoñez, Aymer Andrés[Rhynchophorus palmarum in Disguise: Undescribed Polymorphism in the “Black” Palm Weevil]Rhynchophorus palmarum in Disguise: Undescribed Polymorphism in the “Black” Palm Weevil
Fernández, F.O.Vargas H., OctavioBellotti, Anthony C.Posada, ML C. de[Guía de estudio para ser usada como complemento de la unidad videotutorial sobre el mismo tema][Mosca blanca del cultivo de yuca: biología y control]Mosca blanca del cultivo de yuca: biología y control
Schwartz, Howard F.Gálvez E., Guillermo E.[Problemas de producción del frijol: enfermedades, insectos, limitaciones edáficas y climáticas de Phaseolus vulgaris]Problemas de producción del frijol: enfermedades, insectos, limitaciones edáficas y climáticas de Phaseolus vulgaris

At the Apion nursery, Asuncion Mita, Jutiapa, several entries from the Guatemalteco Germplasm Bank (some formerly reported as resistant), entries from CIAT preliminary yield trials (EP-81), and individual selections from Linea 17 and from the International Apion Nursery were assessed for resistan...


Beebe, Stephen E.Salguero, V[Evaluacion de resistencia del frijol al Apion godmani en Judapa Guatemala]Evaluacion de resistencia del frijol al Apion godmani en Judapa Guatemala

Whiteflies (Hemiptera, Aleyrodidae) are represented by more than 1500 herbivorous species around the world. Some of them are notorious pests of cassava (Manihot esculenta), a primary food crop in the tropics. Whitefly populations are regulated mainly by Hymenopteran parasitoids. Despite their imp...


Vásquez Ordoñez, Aymer AndrésHazzi, Nicolas AEscobar Prieto, DavidPaz-Jojoa, DarioParsa, Soroush[A geographic distribution database of the cassava whitefly complex (Hemiptera, Aleyrodidae) and their associated parasitoids and hyperparasitoids (Hymenoptera)]A geographic distribution database of the cassava whitefly complex (Hemiptera, Aleyrodidae) and their associated parasitoids and hyperparasitoids (Hymenoptera)

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