Exhibit 4.3 MONSANTO COMPANY $500,000,000 Notes due 2001 $600,000,000 Notes due 2005 $200,000,000 Notes due 2008 $500,000,000 Debentures due 2018 $700,000,000 Debentures due 2028 REGISTRATION RIGHTS AGREEMENTRegistration Rights Agreement • March 2nd, 1999 • Monsanto Co • Chemicals & allied products • New York
