Doctor of Philosophy, University of Wisconsin, 1974. Doctor of Science (honorary), Maharana Pratap University of Agriculture, India, 2004.
Maize scientist International Maize and Wheat Improvement Center, Mexico, 1974—1997, director, African livelihoods program Nairobi, Kenya, 2004, director maize program, 1997—2003. Director, agricultural support systems Food and Agriculture Organization, Rome, since 2005.
Fellow: Crop Science Society of America (Fellowship 1998), American Society of Agronomy (Fellowship 1998).
Married Gyan Vati Dubey, July 12, 1969. Children: Anita, Geeta, Sarita.