Sources of increased variability in world cereal production since the 1960s
Recent growth in world cereal production has been accompanied by a more than proportional increase in the standard deviation of production. This study applies variance decomposition procedures to data on crop production by major geographical regions of the world to analyse the sources of this increa...
| Autor principal: | |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
1985
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/170510 |
| _version_ | 1855527303364214784 |
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| author | Hazell, Peter B. R. |
| author_browse | Hazell, Peter B. R. |
| author_facet | Hazell, Peter B. R. |
| author_sort | Hazell, Peter B. R. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Recent growth in world cereal production has been accompanied by a more than proportional increase in the standard deviation of production. This study applies variance decomposition procedures to data on crop production by major geographical regions of the world to analyse the sources of this increased instability. It is found that the increase in aggregate production variability is predominantly due to increased yield variability and to a simultaneous loss in offsetting patterns of variation in yields between crops and regions. These changes are probably associated with the sharp increase in the variability of world cereal and oil prices since the early 1970s and with the more widespread adoption of improved seed/fertiliser intensive technologies. |
| format | Journal Article |
| id | CGSpace170510 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1985 |
| publishDateRange | 1985 |
| publishDateSort | 1985 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1705102025-01-29T12:57:02Z Sources of increased variability in world cereal production since the 1960s Hazell, Peter B. R. grain yields Recent growth in world cereal production has been accompanied by a more than proportional increase in the standard deviation of production. This study applies variance decomposition procedures to data on crop production by major geographical regions of the world to analyse the sources of this increased instability. It is found that the increase in aggregate production variability is predominantly due to increased yield variability and to a simultaneous loss in offsetting patterns of variation in yields between crops and regions. These changes are probably associated with the sharp increase in the variability of world cereal and oil prices since the early 1970s and with the more widespread adoption of improved seed/fertiliser intensive technologies. 1985-05 2025-01-29T12:57:02Z 2025-01-29T12:57:02Z Journal Article https://hdl.handle.net/10568/170510 en Limited Access Wiley Hazell, Peter B. R. 1985. Sources of increased variability in world cereal production since the 1960s. Journal of Agricultural Economics 36(2): 145-159. https://doi.org/10.1111/j.1477-9552.1985.tb00162.x |
| spellingShingle | grain yields Hazell, Peter B. R. Sources of increased variability in world cereal production since the 1960s |
| title | Sources of increased variability in world cereal production since the 1960s |
| title_full | Sources of increased variability in world cereal production since the 1960s |
| title_fullStr | Sources of increased variability in world cereal production since the 1960s |
| title_full_unstemmed | Sources of increased variability in world cereal production since the 1960s |
| title_short | Sources of increased variability in world cereal production since the 1960s |
| title_sort | sources of increased variability in world cereal production since the 1960s |
| topic | grain yields |
| url | https://hdl.handle.net/10568/170510 |
| work_keys_str_mv | AT hazellpeterbr sourcesofincreasedvariabilityinworldcerealproductionsincethe1960s |