1. Department of Agricultural Economics and Agribusiness Management, School of Agricultural and Food Sciences, Jaramogi Oginga Odinga University of Science and Technology, Bondo, Kenya
2. Department of Environmental Sciences, Wageningen University & Research, Water Systems and Global Change Group, Wageningen, The Netherlands
3. Department of Agricultural Economics and Agribusiness Management, Faculty of Agriculture, Egerton University, Egerton Njoro, Kenya