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Book (stand-alone)Fisheries in the drylands of sub-Saharan Africa 2016
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The focus of this review has been on both documenting the general resilience of many fish resources to climatic variability and its underestimation in livelihood importance, including in protracted crisis situations, but also on enhancing the potential supply of fish from dryland areas by better use of the available water bodies, and in particular from small reservoirs. -
No Thumbnail AvailableBook (stand-alone)Land quality indicators and their use in sustainable agriculture and rural development 1997
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Book (stand-alone)Plant nutrition for food security - A guide for integrated nutrient management 2006
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No results found.Of the essential material needs of humankind, the basic requirement is for an adequate supply of air, water and food. People have free access to the air they breathe. However, access to drinking-water and food, while easily obtained for some, is difficult for many. In addition to being physically available, these materials should also be of acceptable quality and continuously so. Hunger and diseases have affected humankind since the dawn of history. Throughout time, there have been p eriods of famine leading to suffering and starvation, making the fight against hunger and the diseases caused by malnutrition a permanent challenge. For many centuries until about 1800, the average grain yield was about 800 kg/ha, providing food only for a few people. The main problems were the low fertility of most soils (mainly caused by the depletion of nutrients) and the great yield losses from crop diseases and pests.
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