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Research carried out to evaluate management options and animal production potential of native and improved pastures in savanna regions of tropical America is reviewed, with emphasis on Colombia's Eastern Plains. In areas with limited infrastructure native grasses are the main forage resource and ...


Lascano, Carlos E.[Managing the grazing resource for animal production in savannas of tropical America]Managing the grazing resource for animal production in savannas of tropical America

Crosses between common bean genotypes from different centres of origin can result in F1 plants with dwarfing that is severe enough to prevent formation of F2 seed. This hybrid dwarfness is controlled by two complementary genes, Dl-1 and Dl-2. The dominant alleles at both loci must be present to c...


White, Jeffrey W.Montes, CMendoza, LY[Use of grafting to characterize and alleviate hybrid dwarfness in common bean]Use of grafting to characterize and alleviate hybrid dwarfness in common bean

Drawing on results of a survey of Ugandan farmers who previously hosted bean (Phaseolus vulgaris L.) varietal trials, this paper reports on the adoption of three new bush bean cultivars and assesses the usefulness of post-trial surveys as a methodology for obtaining reliable early feedback on var...


David, S.Wortmann, Charles S.Kasozi, SMugisha-Mutetikka, M[Using trial follow-up surveys to assess varietal adoption: The case of beans]Using trial follow-up surveys to assess varietal adoption: The case of beans

Los sistemas ganaderos de doble propósito representan el 78% del inventario ganadero en América Latina tropical y contribuyen con aproximadamente el 42% de la leche producida. Sin embargo, se caracterizan por baja productividad animal debido a sistemas deficientes de alimentación basados básicame...


Argel M., Pedro J.[Contribución de los forrajes mejorados a la productividad ganadera en sistemas de doble propósito]Contribución de los forrajes mejorados a la productividad ganadera en sistemas de doble propósito
Tofiño Rivera, Adriana PatriciaOcampo Nahar, César H.Toro Chica, Orlando[Evidencia fenotípica y bioquímica de introgresión mesoamericana en accesiones de habichuela (Phaseolus vulgaris) cultivadas en centros secundarios de domesticación = Evidencia fenotípica y bioquímica de introgresión mesoamericana en accesiones de habichuela (Phaseolus vulgaris) cultivadas en centros secundarios de domesticación = Phenotypical and biochemical evidence regarding Mesoamerican introgression into the germplasm of kidney-beans (Phaseolus vulgaris) cultivated in secondary domestication centres]Evidencia fenotípica y bioquímica de introgresión mesoamericana en accesiones de habichuela (Phaseolus vulgaris) cultivadas en centros secundarios de domesticación = Evidencia fenotípica y bioquímica de introgresión mesoamericana en accesiones de habichuela (Phaseolus vulgaris) cultivadas en centros secundarios de domesticación = Phenotypical and biochemical evidence regarding Mesoamerican introgression into the germplasm of kidney-beans (Phaseolus vulgaris) cultivated in secondary domestication centres

The genetics of resistance to bean golden mosaic virus (BGMV) was studied in an 8×8 complete diallel cross of common bean, Phaseolus vulgaris L. The 28F1 hybrids, their reciprocals, and eight parents were artificially inoculated with BGMV under glasshouse conditions. Data were recorded and analyz...


Morales, Francisco JoséSingh, Shree P.[Genetics of resistance to bean golden mosaic virus in Phaseolus vulgaris L.]Genetics of resistance to bean golden mosaic virus in Phaseolus vulgaris L.

Bean ( Phaseolus vulgaris check for this species in other resources L.) production in Africa is constrained by edaphic stresses. A pan-African effort, Bean Improvement for Low Fertility in Africa (BILFA), was initiated in 1990 to screen beans for tolerance to several edaphic stresses. In the fir...


Wortmann, Charles S.Lunze, LOchwoh, VALynch, J[Bean improvement for low fertility soils in Africa]Bean improvement for low fertility soils in Africa

Tropical soils are particularly vulnerable to fertility losses due to their low capacity to retain organic matter and mineral nutrients. This urges the development of new agricultural practices to manage mineral nutrients and organic matter in a more sustainable way while relying less on fertiliz...


Noguera, DLaossi, KRLavelle, Patrick M.Cruz de Carvalho, M.H.Asakawa, N.Botero, CésarBarot, S[Amplifying the benefits of agroecology by using the right cultivars]Amplifying the benefits of agroecology by using the right cultivars
Toro Chica, OrlandoLareo, LRDebouck, Daniel G.[Observations on a noteworthy wild lima bean, Phaseolus lunatus L., from Colombia]Observations on a noteworthy wild lima bean, Phaseolus lunatus L., from Colombia

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

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