934 resultados para Produtividades agrícolas


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Incluye Bibliografía

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La presente edición del Boletín se basa en el estudio Liberalización comercial agrícola con costos de transporte y transacción elevados: evidencia para América Latina, LC/L.2232-P, Serie Desarrollo Productivo No 160, diciembre del 2004. El citado estudio reúne evidencia sugiriendo que, tanto la magnitud como la naturaleza de los efectos de la liberalización comercial del sector agrícola en los países de América Latina, dependen crucialmente de los costos de transporte y de transacciones asociados a la ubicación de compradores y proveedores en el espacio físico, y que aquellos afectan de forma diferente a los productores en función de su escala de producción.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Agronomia (Produção Vegetal) - FCAV

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Among the crops commercially exploited in Brazil, the coffee has a great economic importance, especially in the states of Minas Gerais and Espirito Santo. In the search for higher yield and lower environmental impact, farmers and researchers seek to develop new technologies that result in greater efficiency in various production processes of the coffee. For this, the adoption of precision agriculture in the management of operations in coffee crops, called precision coffee, has shown results that justify its use, by identifying the spatial variability of several variables, allowing its localized management and in the proper intensity. Unlike conventional management that is based on the average of observations in an area, precision agriculture uses a more detailed sampling, based on a sampling grid, which allows to represent in greater detail the reality of farming. Many previous studies have identified the spatial variability of the production of coffee system variables, but without worrying about the quality of information obtained due to the sampling grid used as precision and accuracy. Given the above, the objective of this study was to evaluate the quality of four different sampling grids for different variables and three times, in order to identify the most appropriate grid for use in precision coffee. Also aimed to compare the results between the precision coffee and conventional, according to reference values.

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Pós-graduação em Medicina Veterinária - FMVZ