aces.nmsu.edu 80% of the atmosphere bacteria nitrogen fixing plants lowly peanut plant New Mexico State University: Nitrogen Fixation by Legumes http://aces.nmsu.edu/pubs/_a/A129/ http://aces.nmsu.edu/pubs/_a/A129/ New Mexico State University: Nitrogen Fixation by Legumes aces.nmsu.edu NMSU: A-129: Nitrogen Fixation By Legumes lowly peanut plant guide