An international journal of forestry and forest industries
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Showing items 1 through 9 of 6.-
Library ResourceArticles et Livresdécembre, 1980Inde, Iraq, Honduras, États-Unis d'Amérique, Italie
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Library ResourceArticles et Livresdécembre, 1980Ouganda, Philippines, Asie
Revista internacional de silvicultura e industrias forestales
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Library ResourceArticles et Livresdécembre, 1980Kenya, États-Unis d'Amérique, Belgique, Japon, République dominicaine, Mexique, République-Unie de Tanzanie, Inde, Bulgarie, Pays-Bas, Venezuela, Costa Rica, Barbade, Brésil
Methods for evaluating nutrient status in order to obtain better plant growth and increased yield are constantly being developed and improved. New analytical techniques and procedures for soil and plant analysis have been invented and tested in many countries and laboratories. There have been innovations in data processing leading to preparation of more refined and specific fertilizer recommendations. The purpose of the Consultation was: i.
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Library ResourceArticles et Livresdécembre, 1980Bangladesh, Allemagne, Pérou, Indonésie, Bulgarie, Bolivie, Portugal, Myanmar, Roumanie, Japon, Turquie, Ouzbékistan, Italie, Brunéi Darussalam, Inde, Bhoutan, Paraguay, Mexique, Brésil, Grèce, Asia du sud-est
Projections reveal that to sustain the likely world population in the year 2000, an increase of 60 percent in agricultural production will be required. "Is there sufficient land to meet these needs?" becomes the overriding question. However, little precise information exists on which to base a reliable answer. Previous appraisals of the global extents of arable lands, to support present and future human populations, vary from 3 to 7 thousand million hectares. Estimates of the populations these lands can support, vary from 7.5 to 40 thousand million.
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Library ResourceArticles et Livresdécembre, 1980Bénin, Nigéria, Zambie, Mali, Ghana, Congo, Sierra Leone, Niger, Colombie, Kenya, Libéria, Japon, Cameroun, Tchad, Sénégal, Soudan, Togo, Côte d'Ivoire, Afrique
Policy makers as well as scientists have started to acquire an honest appreciation of the possibilities of reducing the wastage of materials which could be profitably utilized for improving or maintaining soil productivity. In addition, the great opportunities offered by making more efficient use of the potentials of biological nitrogen fixation in farming systems are now fully recognized. A number of recommendations and suggested guidelines were made by the various Working Groups during the two-week Workshop.
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Library ResourceArticles et Livresdécembre, 1980Indonésie, États-Unis d'Amérique, Philippines, Ouganda, Chine, Italie, Asie
An international journal of forestry and forest industries
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