Microbial populations and the activity of the soil under agricultural and agricultural-pastoral systems

The effects of agricultural-pastoral and tillage practices on soil microbial populations and activities have not been systematically investigated. The effect of no-tillage (NT), no-tillage agricultural-pastoral integrated systems (NT-I) and conventional tillage (CT) at soil depths of 0-10, 10-20 and 20-30 cm on the microbial populations (bacteria and fungi), biomass-C, potential nitrification, urease and protease activities, total organic matter and total N contents were investigated. The crops used were soybean (in NT, NT-I and CT systems), corn (in NT and NT-I systems) and Tanner grass (Brachiaria sp.) (in NT-I system); a forest system was used as a control. Urease and protease activities, biomass-C and the content of organic matter and total N were higher (p < 0.05) in the forest soil than the other soils. Potential nitrification was significantly higher in the NT-I system in comparison with the other systems. Bacteria numbers were similar in all systems. Fungi counts were similar in the CT and forest, but both were higher than in NT. All of these variables were dependent on the organic matter content and decreased (p < 0.05) from the upper soil layer to the deeper soil layers. These results indicate that the no-tillage agricultural-pasture-integrated systems may be useful for soil conservation.

Formas de propagação de espécies de uso medicinal popular em cinco municípios do estado do Amazonas

This work was carried out in five counties of Amazon State, Brazil, along the Solimoes/Amazonas and Negro Rivers. The objective was to identify the several forms of natural and induced propagation with medicinal plants, natives and exotics. The peoples were interviewed, with visit and recollection of botanical materials to herborization and reproduction. The greatest parts of plants propagate by seeds (65,8 per cent) and cutting (23,5 per cent). It was showed several species that reproduce by other strategies, like bulbs, rhizomes or brotations. The Amazonian species, in general, propagate by seeds, with some exceptions.

Tudo Bem e o nacional-popular no Brasil dos anos 70

Dirigido e escrito por Arnaldo Jabor, Tudo bem foi veiculado nas salas de projeção no ano de 1978 - período de distensão da ditadura - com o apoio governamental da Embrafilme. O filme constitui referência documental para a análise do discurso do artista engajado, após o Golpe de 64, e a política cultural implementada pelos consecutivos governos militares. Tudo bem traz, já no título, uma ironia aos tempos vividos. A história transcorre no bairro de Copacabana, no Rio de Janeiro, num apartamento em reforma de uma família de classe média.

A Cultura clerical e a folia popular

Este artigo aborda o confronto entre um catolicismo autoritário, tridentino e romanizador, que penetrou no Brasil na segunda metade do século XIX e se consolidou nas primeiras décadas do século XX, e o catolicismo tradicional vigente, de fortes raízes populares. em sua obsessão pela unanimidade, o ultramontanismo negou as outras formas de ser católico, estabelecendo as dicotomias entre o velho e o novo, o bom e o mau. Entretanto, as velhas formas de religiosidade popular resistiram, mantendo ainda hoje uma inesgotável fonte de devoção e de fé.

Frente Popular, Modernização e Revolução Passiva no Chile

Discute-se, neste texto, o significado dos 14 anos de governos Radicais que se seguiram à vitória da Frente Popular em 1938. Neste período, o Chile conseguiu combinar crescimento econômico e democracia representativa, alcançando um grau nada desprezível de modernização. Ruptura e continuidade compõem o par indissolúvel do percurso modernizador vivido a partir da Frente Popular, quando se instituiu um novo nexo entre economia, política e relações sociais. O período é caracterizado como uma modalidade específica de revolução passiva, responsável pela atualização da ordem capitalista no país.

Canción popular, nacionalismo, consumo y política en Chile entre los años 40 y 60

Popular urban music is a typically modern cultural event. Its production, distribution and consumption occurred during the process of urbanization of Chile and in a period of growing availability of technological resources. The broadcasting by the mass media allowed popular urban music to reach a larger audience than the local public. Therefore it did not take long time for popular urban music to become a means of cultural homogenization within the parameters of the market system of production and distribution of music, in Chile. This article aims to map the connections between folk music and popular music, with the formation and consolidation of a consumer market for music in Chile. Besides it considers the use of popular music in the forfties and the sixties as a political tool by different groups of the Chilean society, during a time when arts were considered within the controversies about the national identity that arose in different Latin American countries.

Diabo e cultura popular

Ce travail présente l'image du diable qui jouait un rôle important dans la culture populaire du Moyen Âge. Des fêtes comme le Carnaval, la Fête des Fous, la Fête de l'Âne, m'ont permis voir, a travers le symbole du diable, l'interaction de deux formes de culture: la première, sérieuse, religieuse, féodale - ayant un rapport avec le monde des institutions du Moyen Âge; l'autre, comique, irrévérencieuse, profane liée au monde médiéval en dehor des institutions.