POWER OF ATTORNEY

       The undersigned hereby constitutes and appoints each of Cornel Fuerer,
Robert Hahm and Abigail Jarrell, or either of them acting singly and with full
power of substitution, as the undersigned's true and lawful attorney-in-fact to:

       (1)    execute for and on behalf of the undersigned, in the undersigned's
              capacity as an officer and/or director of Corteva, Inc. (the
              "Company"), Forms 3, 4, and 5 (and any amendments thereto) in
              accordance with Section 16(a) of the Securities Exchange Act of
              1934, as amended the "Exchange Act"), and the rules thereunder;

       (2)    do and perform any and all acts for and on  behalf of the
              undersigned  that  may  be  necessary or desirable to complete and
              execute  any  such  Form  3,  4,  or  5,  complete and execute any
              amendments  thereto, and timely file such form with the U.S.
              Securities and Exchange Commission (the "SEC") and any securities
              exchange or similar authority, including without limitation the
              execution and filing of a Form ID or any other documents necessary
              or appropriate to obtain codes and passwords to enable the
              undersigned to file the Forms 3, 4 and 5 electronically with the
              SEC; and

       (3)    take any other action in connection with the foregoing that, in
              the opinion of such attorney-in-fact, may be of beneift to, in the
              best interest of, or legally required by or for, the undersigned,
              it being understood that the documents executed by such attorney-
              in-fact on behalf of the undersigned pursuant to this power of
              attorney shall be in such form and shall contain such information
              and disclosure as such attorney-in-fact may approve in such
              attorney-in-fact's discretion.

       The undersigned hereby grants to such attorney-in-fact full power and

authority to do and perform any and every act and thing whatsoever required,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be
done by virtue of this power of attorney and the rights and powers herein
granted. The undersigned acknowledges that the foregoing attorneys-in-fact, in
serving  in  such capacity at the request and on behalf of the undersigned, are
not assuming, nor  is  the  Company  assuming,  any  of the undersigned's
responsibilities to comply with any provision of Section 16 of the Exchange Act.

       This  Power  of  Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4, and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless  earlier revoked by the undersigned in a signed writing delivered to each
of the foregoing attorneys-in-fact.

       IN  WITNESS WHEREOF, the undersigned has executed this Power of Attorney
as of this 17th day of April, 2019.

Signed and acknowledged:

   /s/ Gregory R. Friedman
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   Gregory R. Friedman