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This paper presents case-study results and aggregate data to evaluate the impact of research in African agriculture. Of 32 casestudies, all but eight report annual returns over 20% and many are far higher, with most gains arising in the late 1980s and1990s. Spurred by policy reforms and changing incentives, these innovations have led to sustained growth in aggregate cerealcrop yields since 1985. Africa's belated 'green revolution' is based on new varieties (often with early maturation for droughtescape), complemented by new management techniques (typically labor-intensive efforts to conserve soil moisture and buildsoil fertility). © 1998 Elsevier Science B.V. All rights reserved.

Subject(s): Production Economics

Research and Development/Tech Change/Emerging Technologies

Issue Date: 1998-09

Publication Type: Journal Article

PURL Identifier: http://purl.umn.edu/174532 Published in: Agricultural Economics: The Journal of the International Association of Agricultural Economists, Volume 19, Issue 1-2 Page range: 81-86

Total Pages: 6

Record appears in: International Association of Agricultural Economists (IAAE) > Agricultural Economics: The Journal of the International Association of Agricultural Economists





Autor: Masters, William A. ; Bedingar, Touba ; Oehmke, James F.

Fuente: http://ageconsearch.umn.edu/record/174532?ln=en







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