AMENDMENT NO. 1 TO THE RIGHTS AGREEMENT


                  This Amendment (the "Amendment"),  dated as of May 8, 1998, is
entered into by and between Delta and Pine Land Company, a Delaware  corporation
(the  "Company"),  and The Harris Trust and Savings  Bank,  an Illinois  banking
corporation, as Rights Agent (the "Rights Agent"),

                                               W I T N E S S E T H:

                  WHEREAS,  the Company and the Rights Agent have entered into a
Rights Agreement, dated as of August 13, 1996 (the "Agreement");

                  WHEREAS, the Company wishes to amend the Agreement; and

                  WHEREAS,  Section 27 of the  Agreement  provides,  among other
things,  that the  Company may  supplement  or amend the  Agreement  without the
approval of any holders of Rights in order make any  provisions  with respect to
the Rights which the Company may deem necessary or desirable;

                  NOW, THEREFORE,  the Company and the Rights Agent hereby amend
the Agreement as follows:

                  1. Capitalized terms used in this Amendment without definition
shall have the meanings given to them in the Agreement.

                  2. Section 1(a) of the Agreement  (the  definition of the term
"Acquiring Person") is amended to add the following sentence to the end thereof:







                  "Notwithstanding  anything in this  Agreement to the contrary,
         neither  Monsanto  Company  ("Buyer") nor any  subsidiary of Buyer (any
         such subsidiary  being referred to herein as "Merger Sub")  established
         to effect  the  Merger  (as  defined  herein)  shall be deemed to be an
         Acquiring Person as a result of the execution, delivery and performance
         under,  or  consummation  of any  one or  more  transactions  (each,  a
         "Permitted   Event"  and   collectively,   the   "Permitted   Events"),
         contemplated  by (i) the Agreement and Plan of Merger,  dated as of May
         8, 1998,  as the same may be amended from time to time,  by and between
         Buyer and the Company (the "Merger  Agreement"),  pursuant to which the
         Company will be merged (the "Merger") with and into Buyer,  or (ii) the
         Termination Option Agreement,  dated as of May 8, 1998, as the same may
         be amended from time to time, by and between Buyer and the Company (the
         "Option Agreement")."

                  3. Section 1(l) of the Amendment  (the  definition of the term
"Shares  Acquisition  Date") is amended to add the following sentence at the end
thereof:

                  "Notwithstanding  anything in this  Agreement to the contrary,
         the acquisition of beneficial ownership of Common Shares of the Company
         pursuant to the Merger and the  consummation  of any one or more of the
         Permitted  Events shall not constitute or result in the occurrence of a
         Shares Acquisition Date."

                  4.  Section  3(a)  of the  Agreement  is  amended  to add  the
following sentence at the end thereof:

                  "Notwithstanding  anything in this  Agreement to the contrary,
         the acquisition of beneficial ownership of Common Shares of the Company
         pursuant to the Merger and the  consummation  of any one or more of the
         Permitted  Events shall not constitute or result in the occurrence of a
         Distribution Date."

                  5.  Section  7(a) of the  Agreement is amended by (a) deleting
the word "or" prior to clause (iii) thereof,  (b) substituting the word "or" for
the period at the end of the paragraph  and (c) adding the  following  clause to
the end thereof:

                  "(iv) the time  immediately  prior to the  Effective  Time (as
                  such  term is  defined  in the  Merger  Agreement),  provided,
                  however,  that  if  the  Merger  contemplated  by  the  Merger
                  Agreement   does  not  occur  and  the  Merger   Agreement  is
                  terminated,  the  Rights  will  remain  exercisable  until the
                  earlier of (i), (ii) or (iii) above,  and no Final  Expiration
                  Date  shall be  deemed  to have  occurred  as a result of this
                  clause (iv)."

                  6. Section  11(a)(ii)  of the  Agreement is amended to add the
following sentence at the end of the first paragraph thereof:

                           "Notwithstanding  anything in this  Agreement  to the
                  contrary,  the  acquisition of beneficial  ownership of Common
                  Shares  of  the  Company   pursuant  to  the  Merger  and  the
                  consummation of any one or more of the Permitted  Events shall
                  not  constitute  or  result  in  the  occurrence  of an  event
                  described in this Section 11(a)(ii)."

                  7. Section 13 of the Agreement is amended to add the following
sentence at the end thereof:

                           "Notwithstanding  anything in this  Agreement  to the
                  contrary,  the  acquisition of beneficial  ownership of Common
                  Shares  of  the  Company   pursuant  to  the  Merger  and  the
                  consummation of any one or more of the Permitted  Events shall
                  not be deemed to constitute an event described in clauses (a),
                  (b) or (c) of the first sentence of this Section 13."

                  8.  The term  "Agreement"  as used in the  Agreement  shall be
deemed to refer to the Agreement as amended hereby.

                  9. This  Amendment  shall be  governed by and  constructed  in
accordance with the laws of the State of Delaware.

                  10. This  Amendment  shall be  effective  as of the date first
above written,  and,  except as set forth herein,  the Agreement shall remain in
full force and effect and shall be otherwise unaffected hereby.






                  11.   This   Amendment   may  be   executed  in  two  or  more
counterparts,  each of which shall be deemed to be an original, but all of which
together shall constitute one and the same instrument.

                  IN WITNESS  WHEREOF,  the  parties  hereto  have  caused  this
Amendment to be duly executed as of this _8th_ day of May, 1998.

                                                     DELTA AND PINE LAND COMPANY


                                                     By:     /s/ Roger D. Malkin
                                                         Name:   Roger D. Malkin
                                                         Title:     Chairman

                                                   THE HARRIS TRUST AND SAVINGS
                                                   BANK, as Rights Agent


                                                 By:      /s/ Ginger L. Lawrence
                                                     Name:   Ginger L. Lawrence
                                                     Title:     Trust Officer