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Mostrando ítems 1 a 9 de 48.
  1. Library Resource
    Artículos de revistas y libros
    Diciembre, 2014
    Ghana, África, África occidental

    This chapter explores some of the financial and economic aspects of urban and peri-urban agriculture in Ghana. Cost-benefit analysis comparisons were made of farm finances of common rural, peri-urban and urban farming systems. Substudies also tried to quantify benefits for society and to cost externalities related to soil nutrient depletion, pesticide use and urban malaria.

  2. Library Resource
    Artículos de revistas y libros
    Diciembre, 2014
    Ghana, África, África occidental

    This chapter examines key institutional issues that are important to the recognition and sustainability of irrigated vegetable farming in Ghanaian cities. It assesses the informal nature of the business and examines current roles being played by relevant agencies directly or indirectly linked to urban vegetable farming and urban wastewater management. The chapter also looks at relevant bylaws, strategies and policies that have implications for the recognition of informal irrigation and/or the adoption of safety measures for risk reduction in irrigated vegetable farming.

  3. Library Resource
    Artículos de revistas y libros
    Diciembre, 2014
    Ghana, África, África occidental

    This chapter presents approaches tested in Ghana to mitigate wastewater irrigation-related risks for consumers and farmers from microbial contamination. The recommended interventions follow the WHO approach concerning multiple barriers along the food chain. Factors that could support the uptake of safety measures are discussed.

  4. Library Resource
    Artículos de revistas y libros
    Diciembre, 2014
    Ghana, África, África occidental

    Contamination levels of water and crops which exceed common standards are only a first indication of human health risks. This chapter shows estimates of human health risks from consumption of wastewater-irrigated vegetables based for example on dose-response modeling. The chapter focuses on human health risks and risk perceptions of microbiological and chemical contaminants such as heavy metals and pesticides.

  5. Library Resource
    Artículos de revistas y libros
    Diciembre, 2014
    Etiopía, Tanzania, Ghana, África

    In this paper, we will explore the ways in which sustainable intensification interventions

    often overlook fundamental social dynamics in rural landscapes. We provide evidence of

    the underlying social, political and environmental contexts that affect farmers’ land-use

    decisions. While there are numerous initiatives to promote a Green Revolution for Africa,

    many tend to be dominated by technical fixes that fail to understand rural farmers’ condi

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    tions or aspirations and focus narrowly on increasing productivity. These technical solu

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  6. Library Resource
    Artículos de revistas y libros
    Diciembre, 2014
    Ghana, África, África occidental

    This chapter serves as an introduction to the book and provides brief information about urbanization in West Africa, and in Ghana in particular, the general role of urban agriculture and the common use of polluted irrigation water. It describes our focus on irrigated smallholder vegetable production and our understanding of the terms ‘urban‘, ‘peri-urban’ and ‘wastewater’. The chapter reflects on some of the key challenges of the farming system, its dynamic and resilience.

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