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Management of Acid Soils AgEcon
Craswell, Eric T.; Pushparajah, E..
Tipo: Report Palavras-chave: Resource /Energy Economics and Policy.
Ano: 1989 URL: http://purl.umn.edu/118039
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NUTRIENT FLOWS IN AGRICULTURAL PRODUCTION AND INTERNATIONAL TRADE: ECOLOGICAL AND POLICY ISSUES AgEcon
Craswell, Eric T.; Grote, Ulrike; Henao, Julio; Vlek, Paul L.G..
This paper addresses the issue of environmental and ecological impacts of nutrient flows within and between countries by reviewing and presenting data on nutrient balances and global nutrient movements. The results for nutrient depletion in agricultural soils during 1996-1999 show that in most countries in Africa and Latin America and the Caribbean rates of depletion are so high that current land use is not sustainable. At the other end of the scale, nutrient surplus derived from agriculture is most serious in the USA and industrialized countries of Europe, but also occurs in some densely populated areas of countries such as India and China. International net flows of NPK in traded agricultural commodities were estimated to total 4.8 Tg in 1997 and...
Tipo: Working or Discussion Paper Palavras-chave: Environmental Economics and Policy.
Ano: 2004 URL: http://purl.umn.edu/18734
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