Barkley, Andrew P.

By: Nalley, Lawton Lanier; Barkley, Andrew P.
This study applies portfolio theory to wheat varietal selection decisions in order to find risk-minimizing outcomes while holding historical yields constant. Potential correlation across wheat cultivar yields increases the complexity of cultivar selection decisions, with gains in one attribute (yield potential) often associated with losses in another (yield stability). Using location-specific empirical data, portfolio theory can provide producers in low-income countries a tool for developing a recommended portfolio of varieties given a desired risk-aversion level. Based on data from Mexico’s Yaqui Valley, results suggest that sowing a portfolio of wheat varieties could have lowered yield variance by 22% to 33% in Northwest Mexico.
By: Barkley, Andrew P.
The need for institutions of higher education to teach students of all ages how to think, synthesize ideas, and assimilate new information has become crucial in the information age. Analytical ability is increasingly important, not only for traditional university clientele of young adult residential learners, but also for productive individuals throughout their lives. Agricultural economics teachers must invest in the acquisition of new skills and knowledge, including a willingness to change traditional teaching structures and institutions, to take full advantage of the huge opportunities and challenges of the massive changes in technology and the economy. This paper considers how well teaching programs in agricultural economics enhance student learning.