Keith has a background in farming systems, agribusiness, agri-food systems and international rural development. He has worked on and led rural development and education projects in Cambodia, Papua New Guinea, Vietnam and Sri Lanka. He has also undertaken consultancies in many countries, particularly Asia, including China, Laos, Korea, Japan, Taiwan, the Philippines, and East Timor. He lived and worked in Fiji for one year, and in Australia for 18 years before returning to New Zealand in 2000.
Keith has supervised masters and PhD theses on agricultural and agribusiness issues in Indonesia, Ethiopia, PNG, Vietnam, Uruguay, Brazil, Jamaica, China. Australia, and New Zealand.
Keith is a regular commentator on agri-food and agribusiness issues in the New Zealand media. In 2007, he authored the book 'Devil in the Milk' on the health and politics of beta-casein issues.
His research interests are diverse, but in general relate to agri-food systems and how agri-food firms (including farms) and industries can achieve and sustain a competitive advantage, within a context of human health and environmental sustainability.
In 2014 he retired from Lincoln University, but retains an honorary professorial position there, and also holds an honorary position as Senior Research Fellow at the Contemporary China Research Centre at Victoria University, Wellington. He also works as a consultant on a range of industry projects.