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Impacts of international research on intertemporal yield stability in wheat and maize: an economic assessment

Author: Gollin, D.
Year: 2006
ISBN: 970-648-139-7
URI: http://hdl.handle.net/10883/1053
Abstract: Critics of modern maize and wheat varieties (MVs) have suggested that, in developing countries, yields of these varieties vary more from season to season than yields of farmers’ traditional varieties, thereby exposing consumers and producers to greater risk. Drawing on country-level data for MV diffusion, as well as aggregate data on production and yields from FAOSTAT, this study makes novel use of the Hodrick-Prescott filter to disentangle changes in trend from annual fluctuations. The outcomes suggest that, over the past 40 years, the relative variability of grain yields—that is, the absolute magnitude of deviations from the yield trend—has declined for both wheat and maize in developing countries, and that the reduction is statistically associated with the spread of MVs, even after controlling for expanded use of irrigation and other inputs. At appropriate world prices, the annual benefits from improved yield stability alone are about US$143 million for wheat and about US$149 million for maize.
Format: PDF
Language: English
Publisher: CIMMYT
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Book
Region: Global
Place of Publication: Mexico
Pages: 27 pages
Agrovoc: WHEAT
Agrovoc: MAIZE
Agrovoc: VARIETIES
Agrovoc: AGRICULTURAL DEVELOPMENT
Agrovoc: ECONOMIC ANALYSIS
Agrovoc: AGRICULTURAL POLICIES
Agrovoc: AGRICULTURAL RESEARCH
Agrovoc: PRODUCTION ECONOMICS
Agrovoc: DATA COLLECTION
Agrovoc: STATISTICS
Agrovoc: PRICES
Agrovoc: YIELDS
Agrovoc: DEVELOPING COUNTRIES
Agrovoc: WHEAT
Agrovoc: MAIZE
Agrovoc: VARIETIES
Agrovoc: AGRICULTURAL DEVELOPMENT
Agrovoc: ECONOMIC ANALYSIS
Agrovoc: AGRICULTURAL POLICIES
Agrovoc: AGRICULTURAL RESEARCH
Agrovoc: PRODUCTION ECONOMICS
Agrovoc: DATA COLLECTION
Agrovoc: STATISTICS
Agrovoc: PRICES
Agrovoc: YIELDS
Agrovoc: DEVELOPING COUNTRIES


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This item appears in the following Collection(s)

  • Maize
    Maize breeding, phytopathology, entomology, physiology, quality, and biotech
  • Socioeconomics
    Including topics such as farming systems, markets, impact & targeting, innovations, and GIS
  • Wheat
    Wheat - breeding, phytopathology, physiology, quality, biotech

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