The process of selection in climbing bean improvement should be conducted with maize in association due to the high cost of sole cropping with stakes or with a trellis system. The relation between yields of beans and maize is negative and the regression coefficient is normally between -1 and -2. ...
Davis, J.
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[Relaciones de competencia entre frijol y maiz en sistemas de asociacion y sus inferencias para el mejoramiento genetico]
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Relaciones de competencia entre frijol y maiz en sistemas de asociacion y sus inferencias para el mejoramiento genetico
Different assays on climbing beans in relay cropping or associated with maize, N fixation and Rhizobium inoculation, and bush beans in monoculture are reported. These were conducted in La Selva, Antioquia (Colombia), through a collaborative project between the Instituto Colombiano Agropecuario (I...
Roman, A
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Davis, J.
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García, S.
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Graham, P.
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Temple, S
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[Informe de trabajos 1979: Convenio ICA-CIAT: Programa de frijol]
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Informe de trabajos 1979: Convenio ICA-CIAT: Programa de frijol
Roman V, A
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Davis, J.
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[Informe de trabajos 1980: Convenio ICA-CIAT, La Selva, Antioquia: Progama de frijol]
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Informe de trabajos 1980: Convenio ICA-CIAT, La Selva, Antioquia: Progama de frijol
A summary is presented of results of trials conducted as part of the collaborative agreement between the Instituto Colombiano Agropecuario and CIAT on bean research during 1981 in La Selva, Antioquia (Colombia). During germplasm evaluation, 112 promising materials were identified for their adapta...
Studies were conducted at CIAT to test a new methodology (1) to improve F3, yields through the use of a hierarchical exptl design (a 9 x 9 lattice with 3 replications, with lines grouped according to the design, without taking into accont the family of origin) and (2) to select beans in associati...
Davis, J.
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García, S.
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Tejada, G
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[Seleccion en generaciones tempranas de frijoles volubles en asociacion con maiz]
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Seleccion en generaciones tempranas de frijoles volubles en asociacion con maiz
Maize and climbing beans as associated crops prevail in the highlands of L.A. in traditional systems with low populations and manual planting (in rows and pocket drilling). Two trials were establislied to compare the systems, testing bean densities from 4- 12 plants/m(2) and 3-12 plants/m(2), wit...
Some methodologies, including examples, for developing bean var. specifically adapted to intercropping with maize are considered. Since every breeding program has to contend with genotype x environment interactions, decisions have to be made regarding the locations for breeding nurseries, the con...
Davis, J.
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[Breeding for intercrops with special attention to beans for intercropping with maize]
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Breeding for intercrops with special attention to beans for intercropping with maize
The methodology used and the results obtained are discussed for an investigation conducted at CIAT on agronomic factors of maize- bean associations: planting method, density and date, stakes used, fertilization and cultural practices. It was concluded that if high technological levels are used, t...