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Copyright of Formación Universitaria is the property of Centro de Informacion Tecnologica (CIT) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Espacios is the property of Talleres de Impresos Oma and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The bean Phaseolus vulgaris L. (Fabaceae) is one of the most important species in Peru and the world for human nourishment. It also improves the ground because it fixes atmospheric nitrogen in symbiosis with Rhizobium phaseoli .It allows saving fertilizer, economical upside for farmers. This research has been carried out in a trial field located in Lima (Peru), from September 2012 to June 2013. The objectives were to evaluate the “ñuña" bean's cultivar performance (P. vulgaris L.) within the production of seeds in symbiosis with R. phaseoli and to select the cultivar the most high performing and which expresses the greatest compatibility in symbiosis. The experimental methodology was the Randomized Complete Block Design (RCB) in 15 treatments (with Rhizobium inoculation, the witnesses: without inoculation and with fertilizer N.P.K.), 05 “ñuña" bean's cultivars and three essays. The following factors have been evaluated: earliness, nodulation and nitrogen fixation (FBN) and performance; which were analyzed in the statistical software, SPSS. There are significant statistical differences between treatments. In the Tukey's average comparison test at 5 % turned out that treatments with inoculation and fertilized with urea do not differ. When evaluating the earliness factors in days, the cultivar N°1 “azulita" had the best performance (at flower's stems appearance, at blooming, at physiological maturity and harvest). What is more, cultivar N° 3 also had the lowest number of days and nodule appearance (74.78 days) in inoculated cultivars tests. The cultivar N°1 presented the best size, nodule number and weight performance. The inoculated cultivar showed the highest performance, especially the N°1 (5,148 kg/ht). As a conclusion, the “ñuña Azulita" had the best performance in grain and it had the greatest compatibility in symbiosis with R. phaseoli. Besides, the biological fixation of nitrogen (FBN) through symbiosis can replace the fertilization with urea, because it is less expensive and does not affect negatively the ecological system. [ABSTRACT FROM AUTHOR]

El artículo presenta los resultados de un estudio sobre la formación ciudadana de adolescentes secundarios de Guadalajara, México. Según el autor el estudio considera las prácticas docentes y las dinámicas escolares en torno al desarrollo de una cultural política. Las dimensiones consideradas incluyen la participación social, el acceso a los medios de comunicación y los espacios de participación.