[1] Kwame Nkrumah Univ Sci & Technol, Dept Agr Econ Agribusiness & Extens, Kumasi, Ghana
[2] Griffith Univ, Griffith Business Sch, Dept Accounting Finance & Econ, Brisbane, Australia
[3] Univ Dev Studies, Tamale, Ghana
[4] North Carolina Agr & Tech State Univ, Dept Agribusiness Appl Econ & Agrisci, Greensboro, NC USA