Résultats de la recherche
Showing items 1 through 9 of 25.-
Library ResourceArticles et Livresdécembre, 1981Nigéria, Afrique, Afrique occidentale
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Library ResourceRapports et recherchesdécembre, 1981Brésil, Amérique centrale, Amérique du Sud
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Library ResourceArticles et Livresdécembre, 1981Kenya, Afrique, Afrique orientale
Discusses the Kenya Rangeland Ecological Monitoring Unit (KREMU), mentioning its objectives, initial tasks related to identifying ecological units, testing survey methods, training of staff & designing appropriate computer programmes; describes the Unit's achievements, with emphasis on ecological surveys & censuses carried out within the framework of on-going ecological monitoring programmes; outlines problems encountered.
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Library ResourceArticles et Livresdécembre, 1981Kenya, Afrique, Afrique orientale
Describes the organization, objectives and results of the aerial survey programme of the Kenyan Rangeland Ecological Monitoring Unit from 1976 to 1979, with particular reference to the methodology used, animal population estimates, esp. herbivores, and reliability of aerial survey data in terms of aerial, ground & remote sensing counts.
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Library ResourceArticles et Livresdécembre, 1981Colombie, Amérique du Sud, Amérique centrale
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Library ResourceDocuments et rapports de conférencedécembre, 1981Asie, Amérique centrale, Amérique du Sud, Afrique
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Library ResourceArticles et Livresdécembre, 1981
Information on some diseases and pests that attack cassava, as well as the symptoms induced by nutritional deficiencies and toxicities and damage resulting from the misuse of herbicides are given in this manual. Specific and general recommendations regarding the control of the described problems are included. Disease control on a commercial scale is discussed. Formulae suggested for stake treatment before planting and storage and a key for identifying some cassava diseases are annexed. Color photos on symtomatology are included. (AS)
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Library ResourceRapports et recherchesdécembre, 1981Équateur, Bolivie, Pérou, Brésil, Guatemala, Amérique du Sud, Amérique centrale
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Library ResourceRapports et recherchesdécembre, 1981Colombie, Venezuela, Brésil, Amérique du Sud, Amérique centrale
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Library ResourceArticles et Livresdécembre, 1981
Presents workshop papers & discussion summaries on the development of low-level aerial survey techniques and presents applications to livestock, wildlife and land-use surveys. Reviews survey designs and sampling procedures as well as problems of bias, levels, from ground survey to satellite imagery; along w. recommendations for further research and cooperation.
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