Scope economies and technical efficiency of cocoa agroforesty systems in Ghana

Ofori-Bah, Adeline and Asafu-Adjaye, John (2011) Scope economies and technical efficiency of cocoa agroforesty systems in Ghana. Ecological Economics, 70 8: 1508-1518. doi:10.1016/j.ecolecon.2011.03.013

Author Ofori-Bah, Adeline
Asafu-Adjaye, John
Title Scope economies and technical efficiency of cocoa agroforesty systems in Ghana
Journal name Ecological Economics   Check publisher's open access policy
ISSN 0921-8009
Publication date 2011-06-15
Sub-type Article (original research)
DOI 10.1016/j.ecolecon.2011.03.013
Volume 70
Issue 8
Start page 1508
End page 1518
Total pages 11
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2012
Language eng
Abstract A number of studies have addressed issues relating to the physiological, environmental and economic values of trees in cocoa farming systems. However, to date, little has been done to quantitatively examine the effect of crop diversity on cocoa farming efficiency. This study therefore sets out to first investigate whether and to what extent crop diversity (defined as the mixing of cocoa with other crop species on farmers' plots) affects productivity on cocoa farms. Secondly, it sought to establish whether there are economies of scope (i.e., cost complementarities) from the sharing of farm inputs by crops on the same plots. Our results indicate that diversified (i.e., multi-crop) cocoa farms are more efficient than single (i.e., mono) crop farms. Furthermore, our estimate for the economies of scope parameter indicates possibilities for cost complementarities between production of cocoa and other crops on the same plot. We advocate further investigation on the issue of scope economies to determine which crop combinations offer better cost complementarities and also meet biodiversity conservation objectives.
Keyword Technical efficiency
Economies of scope
Cocoa agroforestry
Crop diversity
Multi-output distance function frontiers
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Published under: 'Analysis'

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Economics Publications
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Created: Wed, 18 May 2011, 14:25:49 EST by Alys Hohnen on behalf of School of Economics