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Showing items 1 through 9 of 82.-
Library ResourceArticles et Livresdécembre, 1994Colombie, Amérique centrale, Amérique du Sud
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Library ResourceArticles et Livresdécembre, 1994Nigéria, Afrique, Afrique occidentale
Large areas of land are presently cleared of their natural cover, endangering the worldwide ecosystem. Land clearing, if necessary, should be carried out with great care after very careful consideration. Different land types require different clearing techniques. Often, soil needs to be stabilized after clearing. All clearing processes require training of persons involved.
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Library ResourceRapports et recherchesdécembre, 1994Afrique, Afrique sub-saharienne
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Library ResourceDocuments et rapports de conférencedécembre, 1994Sri Lanka, Asia du sud-est
Summaries of papers of a workshop which was organized with the objective of reviewing and comparing experiences in the application of computerized decision support tools to improve the performance of water management in irrigation systems of Sri Lanka.
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Library ResourceArticles et Livresdécembre, 1994Sri Lanka, Asia du sud-est
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Library ResourceArticles et Livresdécembre, 1994
Cinco poblaciones de maíz tropical del CIMMYT están siendo mejoradas para tolerancia a suelos ácidos mediante selección recurrente de hermanos completos. Se evaluaron tres ciclos de selección en un diseño de parcela dividida, con número variable de repeticiones, en cinco ambientes edáficos: uno con suelos normales (LNA) y los restantes cuatro con grados variables de estrés edáfico (LSA).
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Library ResourceArticles et Livresdécembre, 1994
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Library ResourceDocuments et rapports de conférencedécembre, 1994
This workshop was conceived in recognition of the fact that, over the years, a great deal of research has been conducted on trypanotolerance. With the advent of new and powerful means to identify markers and genes controlling traits of interest, and with the developments in animal breeding bringing greater speed in dissemination of desirable genotypes, there is increasing interest in trypanotolerance as a way forward in trypanosomiasis control.
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Library ResourceRapports et recherchesdécembre, 1994
This presentation concerns the key property rights issues arising in the West African Semi-Arid Tropics (WASAT). The WASAT contains three main agro-climatic zones: Sahel (300–600 mm of annual rainfall falling in 2.5–4 months); Sudanian (600–900 mm, 4 to 6 month rainy season); and Guinean (900–1100 mm, 6–7 month rainy season). The author presented a conceptual framework to explain the responses that farmers in the WASAT region have adopted to deal with changes in their environment.
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Library ResourceArticles et Livresdécembre, 1994Soudan
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