Collinson, C., Crentsil, D. and Acheampong, S. (1999) Analysis of the relationship between quality and price of yam in Ghana - second round (NRI report no. 2428). Technical Report. Natural Resources Institute, Chatham, UK.

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Abstract

In 1997, NRI staff and officers from the Ghanaian Ministry of Food and Agriculture conducted two quantitative surveys of yam trading in Techiman market. The aim was to establish the importance of financial losses caused by poor yam quality and to measure the relationships between price and a series of quality defect variables. This report summarises the analysis of data gathered during the second survey. Data was analysed using multiple regression. Of the nine quality variables measured in the market, only "rotting" could be proved to have a significant influence on price. This result should not be interpreted to mean that other quality variables do not have an impact on price, merely that there was insufficient variation in quality for the statistical techniques to prove the existence of other price quality relationships. Moreover, at the time of the survey, these findings suggest that the financial losses caused by quality defects were slight. The report concludes with suggestions for improving the data gathering methodology for future surveys. In particular, it recommends extensive qualitative surveys to establish the incidence of quality defect related financial losses throughout the year. If these surveys indicate high financial losses, the research should attempt to establish the quantitative nature of price quality relationships using biased sampling techniques.

Item Type:	Monograph (Technical Report)
Uncontrolled Keywords:	yam, quality, price, Ghana, agriculture, loss, post-harvest, price, defects
Subjects:	S Agriculture > S Agriculture (General)
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science > Natural Resources Institute Faculty of Engineering & Science > Natural Resources Institute > Food & Markets Department Faculty of Engineering & Science
Related URLs:	Publisher
Last Modified:	12 Dec 2019 16:00
URI:	http://gala.gre.ac.uk/id/eprint/11937

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