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Demands for food and fiber are increasing at a faster rate than supply in the medium and high altitude zones of Eastern Africa, while the productivity of the land is apparently declining. In many cases, productivity is constrained primarily by insufficient nutrient supply. To meet future demands ...


Wortmann, Charles S.[Research for sustainable agricultural production systems in high altitude zones of Eastern Africa]Research for sustainable agricultural production systems in high altitude zones of Eastern Africa

This paper addresses considerations for agricultural technology evaluation at various levels. At the research level, considerations include the information need, the resources required to conduct the research and the probability of research success. At the field-level, agronomic feasibility and t...


Wortmann, Charles S.[Agricultural technology evaluation: some considerations]Agricultural technology evaluation: some considerations

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