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CABI Book Chapter

Valuing crop biodiversity: on-farm genetic resources and economic change.

Book cover for Valuing crop biodiversity: on-farm genetic resources and economic change.

Description

In agricultural systems, diversity of crops and varieties is essential to combat the risks farmers face from pests, diseases and variations in climate. Crop biodiversity also underpins the range of dietary needs and services that consumers demand. There is growing concern, however, about declining diversity of crop genetic resources on farms, associated with social and economic change. This book c...

Metrics

Chapter 6 (Page no: 78)

Explaining the diversity of cereal crops and varieties grown on household farms in the highlands of northern Ethiopia.

In this chapter, survey data are used to compare the determinants of intercrop (interspecific) and intracrop (intraspecific) cereal diversity on household farms in the highlands of northern Ethiopia using an approach based on a theoretic framework. Physical features of the farm, and household characteristics such as livestock assets and the proportion of adults that are men or women, have large and significant effects on both the diversity among and within cereal crops grown, varying among crops. Demographic aspects such as age of household-head and adult education levels affect only intracrop diversity of cereals. Though there are no apparent trade-offs between policies that would enhance one type of diversity (richness) versus another (evenness), those designed to encourage intracrop diversity in one cereal crop might have the opposite effect on another crop. Trade-offs between factors associated with economic development and crop diversity are not evident in this resource-poor system. For example, market-related variables and population density have ambiguous effects on cereal crop diversity. Education positively influences cereal crop diversity. Growing modern varieties of maize or wheat does not detract from the richness or evenness of these cereals when measured at the level of household farms. The village-level analysis presented in Chapter 11 [Determinants of cereal diversity in villages of northern Ethiopia by B. Gebremedhin, M. Smale and J. Pender, pp. 177-191] employs data collected in the same sites.

Other chapters from this book

Chapter: 1 (Page no: 1) Concepts, metrics and plan of the book. Author(s): Smale, M.
Chapter: 2 (Page no: 17) Crop valuation and farmer response to change: implications for in situ conservation of maize in Mexico. Author(s): Dyer, G. A.
Chapter: 3 (Page no: 32) Farmer demand for agricultural biodiversity in Hungary's transition economy: a choice experiment approach. Author(s): Birol, E. Kontoleon, A. Smale, M.
Chapter: 4 (Page no: 48) An attribute-based index of coffee diversity and implications for on-farm conservation in Ethiopia. Author(s): Wale, E. Mburu, J.
Chapter: 5 (Page no: 63) Missing markets, migration and crop biodiversity in the milpa system of Mexico: a household-farm model. Author(s): Dusen, M. E. van
Chapter: 7 (Page no: 97) Demand for cultivar attributes and the biodiversity of bananas on farms in Uganda. Author(s): Edmeades, S. Smale, M. Karamura, D.
Chapter: 8 (Page no: 119) Explaining farmer demand for agricultural biodiversity in Hungary’s transition economy. Author(s): Birol, E. Smale, M. Gyovai, Á.
Chapter: 9 (Page no: 146) Rural development and the diversity of potatoes on farms in Cajamarca, Peru. Author(s): Winters, P. Hintze, L. H. Ortiz, O.
Chapter: 10 (Page no: 162) Managing rice biodiversity on farms: the choices of farmers and breeders in Nepal. Author(s): Gauchan, D. Smale, M. Maxted, N. Cole, M.
Chapter: 11 (Page no: 177) Determinants of cereal diversity in villages of northern Ethiopia. Author(s): Gebremedhin, B. Smale, M. Pender, J.
Chapter: 12 (Page no: 192) Social institutions and seed systems: the diversity of fruits and nuts in Uzbekistan. Author(s): Dusen, M. E. van Dennis, E. Ilyasov, J. Lee, M. Treshkin, S. Smale, M.
Chapter: 13 (Page no: 211) Community seed systems and the biodiversity of millet crops in southern India. Author(s): Nagarajan, L. Smale, M.
Chapter: 14 (Page no: 233) Seed supply and the on-farm demand for diversity: a case study from eastern Ethiopia. Author(s): Lipper, L. Cavatassi, R. Winters, P.
Chapter: 15 (Page no: 251) Institutions, stakeholders and the management of crop biodiversity on Hungarian family farms. Author(s): Bela, G. Balázs, B. Pataki, G.
Chapter: 16 (Page no: 270) Cooperatives, wheat diversity and the crop productivity in southern Italy. Author(s): Falco, S. di Perrings, C.
Chapter: 17 (Page no: 280) Scope, limitations and future directions. Author(s): Smale, M. Lipper, L. Koundouri, P.
Chapter: 18 (Page no: 296) An annotated bibliography of applied economics studies about crop biodiversity in situ (on farms). Author(s): Zambrano, P. Smale, M.

Chapter details

  • Author Affiliation
  • International Food Policy Research Institute, Kampala, Uganda.
  • Year of Publication
  • 2005
  • ISBN
  • 9780851990835
  • Record Number
  • 20063061435