IDEAS home Printed from https://ideas.repec.org/
MyIDEAS: Login to save this article or follow this journal

Estimating market demand for fresh yam characteristics using contingent valuation: implications for crop breeding and production choices

  • N. Koffi Amegbeto
  • Victor M. Manyong
  • Ousmane Coulibaly
  • Robert Asiedu
Registered author(s):

    This study uses the Box-Cox (BC) transformations to examine nonlinearity in price modeling and compare results from several functional specifications in hedonic price analysis of yam in Togo. Based on a sample of 6,402 observations on price and produce characteristics generated through a market experiment, it is found that the BC quadratic asymmetric specification is the most suitable function. Several characteristics are valued more than others, and prices vary across species, time, and market sites. Some residual symptoms of pest and disease damages on yam tubers reduce their market values. Tuber weight exhibits a diminishing marginal value and price per kilogram decreases above an optimum size; therefore, producers do not derive additional reward from extra-large tubers. We conclude that, to effectively access and benefit from urban markets, producers should focus on small size, low weight, and conical shaped-tubers, which are easy to process and meet the esthetic qualities preferred by urban consumers. The implications for research on improved variety development to reduce poverty and for crop and resource management practices are drawn. Copyright (c) 2008 International Association of Agricultural Economists.

    If you experience problems downloading a file, check if you have the proper application to view it first. In case of further problems read the IDEAS help page. Note that these files are not on the IDEAS site. Please be patient as the files may be large.

    File URL: http://www.blackwell-synergy.com/doi/abs/10.1111/j.1574-0862.2008.00338.x
    File Function: link to full text
    Download Restriction: Access to full text is restricted to subscribers.

    As the access to this document is restricted, you may want to look for a different version under "Related research" (further below) or search for a different version of it.

    Article provided by International Association of Agricultural Economists in its journal Agricultural Economics.

    Volume (Year): 39 (2008)
    Issue (Month): 3 (November)
    Pages: 349-363

    as
    in new window

    Handle: RePEc:bla:agecon:v:39:y:2008:i:3:p:349-363
    Contact details of provider: Web page: http://www.blackwellpublishing.com/journal.asp?ref=0169-5150
    Email:


    More information through EDIRC

    Order Information: Web: http://www.blackwellpublishing.com/subs.asp?ref=0169-5150

    No references listed on IDEAS
    You can help add them by filling out this form.

    This item is not listed on Wikipedia, on a reading list or among the top items on IDEAS.

    When requesting a correction, please mention this item's handle: RePEc:bla:agecon:v:39:y:2008:i:3:p:349-363. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Wiley-Blackwell Digital Licensing)

    or (Christopher F. Baum)

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If references are entirely missing, you can add them using this form.

    If the full references list an item that is present in RePEc, but the system did not link to it, you can help with this form.

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    This information is provided to you by IDEAS at the Research Division of the Federal Reserve Bank of St. Louis using RePEc data.