Migración de mano de obra no calificada entre países latinoamericanos

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El proceso de migración

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La migración selectiva

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Los efectos demográficos de la migración hacia las áreas metropolitanas

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Algunos tipos de mujeres pobres latinoamericanas

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Migración interna

Complementa la información contenida en los documentos publicados con los símbolos LC/DEM/CR/G.7 y G.9

Análise de crescimento e produtividade de cultivares de arroz de terras altas dos tipos tradicional, intermediário e moderno

The growth analysis allows the characterization and understanding of the upland rice cultivars development. This study aimed at characterizing, by using the growth analysis, the physiological components and agronomic performance, as well as the differences among traditional, intermediate and modern upland rice cultivars. The experiment was conducted under upland rice conditions, favored by the use of supplementary irrigation. The experimental design was randomized blocks, with three treatments consisting of traditional (Caiapó), modern (Maravilha) and intermediate (BRS Primavera) cultivars and eight replications. The leaf area index (LAI), instantaneous growth rate (IGR), relative growth rate (RGR), net assimilation rate (NAR) and specific leaf area (SLA), as well as grain yield and yield components, were evaluated. The intermediate and traditional cultivars presented the highest total dry matter accumulation rate, while the traditional and modern ones showed the highest LAI. The intermediate cultivar presented the highest IGR, RGR, NAR and SLA levels, as well as the highest grain yield, as a consequence of the higher spikelet fertility and 1,000 grain mass.

Propriedades físico-hídricas, desenvolvimento radicular e produtividade da soja em dois tipos de manejos de solo

The soybean culture is part of crop rotation used by irrigators from the southwestern region of São Paulo State that perform no-tillage soil management as a form of sustainable soil use. The objective of this work was to evaluate the effect of this conservationist practice on physicalhydric properties, soil compaction, root development, and soybean culture production components in relation to the conventional management. The experiment was conducted at the Buriti-Mirim Farm, Angatuba, SP, in Brazil, using an area irrigated by a center pivot system divided into two types of soil management: conventional and no-tillage. Although the no-tillage management presented higher soil density, lower water available and lower soil resistance to penetration, both soil managements showed no difference in relation to root development.

La migración interna en la Argentina, período 1975-1980

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Introducción al análisis de la migración: apuntes de clase: notas preliminares

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La migración de mano de obra calificada dentro de América Latina

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Proyecto IMILA: Investigación de la Migración Internacional en Latinoamérica

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Determinantes socioeconómicos de la migración interna, con especial referencia a la región de América Latina y el Caribe

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Migración diferencial en algunas regiones y ciudades de la América Latina, 1940-1950

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