Dr. Pareja is an agronomist (1972) with post-graduate studies in the USA (M.Sc. in Botany, 1976, and Ph.D. in Agronomy, 1984, both from Iowa State University). His educational background and early professional experience were in pest management, IPM and environmental impact of pesticides. For more than 35 years he has worked on research, education and training, extension and design, monitoring and evaluation of socio-economic development and research and innovation projects and institutions.