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  Knowledge for development  
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Les volontaires paysans ont été formés à la pratique d'observations au sujet des saisons de croissance et à l'échantillonnage de données de rendement lors des récoltes. Ces paysans ont pu en former d'autres pendant les jours de travaux de terrain sur les superficies de recherche et lors des séminaires de fin d'année.
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The indigenous ecological knowledge of the Maasai pastoralists was employed together with ecological methods to assess the effects of grazing and cropping on rangeland biodiversity at macro- and micro-landscape levels in northern Tanzania. The joint surveys with pastoralists identified indicator plant species and their associations with micro-landscapes and livestock grazing suitability, while traditional calf-pasture reserves were evaluated for the preservation of rangeland biodiversity. The macro-landscapes comprising the cool high plateau and montane forest highland were included in the survey. At micro-landscape levels, the high plateau was classified into uplands, slopes and dry valley bottomlands. The micro-landscapes were assessed in terms of herbaceous plant species and woody species richness and risks of soil erosion. Biodiversity varied at both the macro- and micro-landscape levels and in accordance with the land use types. Greater plant species diversity and fewer erosion risks were found in the pastoral landscapes than in the agropastoral landscapes. The calf-grazing pastures had greater herbaceous species richness than the non-calf pastures, which in turn had more woody species. It was concluded that the indigenous systems of landscape classification provided a valuable basis for assessing rangeland biodiversity in East Africa. From authors' summary. African journal of ecology (UK) 2003, 41(4) p. 329-336
  Knowledge for development  
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Les volontaires paysans ont été formés à la pratique d'observations au sujet des saisons de croissance et à l'échantillonnage de données de rendement lors des récoltes. Ces paysans ont pu en former d'autres pendant les jours de travaux de terrain sur les superficies de recherche et lors des séminaires de fin d'année.
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Traditional farming practices in the highlands of Lesotho are briefly described, and a methodology to help farmers build on indigenous knowledge as they develop a community research agenda aimed at improving crop production is outlined. At a series of village-based workshops, farmers analysed the strengths and weaknesses of their cropping system and targeted strategic knowledge to be expanded through research. Subsequently, a non-governmental organization (GROW) worked with volunteer farmers to develop and implement on-farm agronomic experiments. Treatments were replicated in plots throughout the Mokhotlong area and, in some cases, over multiple growing seasons. Volunteer farmers were trained to make observations concerning the growing season and sample yield data at harvest. These farmers trained other farmers during field days at the research plots and end-of-season seminars. Following the 2000 growing season, more than half of the farmers working with GROW had trained other farmers in crop rotation, manure application, intercropping, or potato production.