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Ebooks on agriculture and the applied life sciences from CAB International

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 5 (Page no: 63)

Missing markets, migration and crop biodiversity in the milpa system of Mexico: a household-farm model.

This chapter elaborates a household model to address the way that social and economic factors can affect the process of genetic erosion in the Mexican milpa system, counting minor intercropped species along with principal staple crops. The study presented in Chapter 2 was implemented in one of the sites analysed here. A number of models presented in Part III are based on the household model developed in this chapter. The household model joins a farm production function, a household consumption function and market-related constraints on market availability in order to create an inclusive general model. Testable hypotheses are developed from the theoretical model, which are applied in reduced form using a limited dependent variable approach. Migration is one of the most important economic forces in rural Mexico, and the econometric application focuses on how migration can affect diversity through both income and labour market effects. Data indicate that for these farmers, production and consumption decisions cannot be separated. Migration does affect diversity but is differentiated between internal and international migration. Migration within Mexico appears to support crop diversity in the milpa system through remittances, while international migration reduces it through displacing household labour. Specifications with household and village-level variables for the migration are compared and offer similar findings.

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: 6 (Page no: 78) Explaining the diversity of cereal crops and varieties grown on household farms in the highlands of northern Ethiopia. Author(s): Benin, S. Smale, M. Pender, J.
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
  • University of California, Berkeley, CA 94720, USA.
  • Year of Publication
  • 2005
  • ISBN
  • 9780851990835
  • Record Number
  • 20063061434