The advent of globalisation has brought many opportunities in trade, capital and labour flows and in exchange of information and technology. For agricultural producers, globalisation offers the possibility of expanded markets. But integration into the global economy is fraught with challenges,...

Economic theory often provides information on the variables to be included in economic relationships (e.g., demands are functions of prices) and sometimes provides information on the signs and magnitudes of first- and second-order derivatives (e.g., homogeneity and concavity information)....