Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
LEIDY MARK J
   2. Issuer Name and Ticker or Trading Symbol
MONSANTO CO /NEW/ [MON] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
EVP-Manufacturing
(Last)
(First)
(Middle)
800 N. LINDBERGH BLVD.		 3. Date of Earliest Transaction (Month/Day/Year)
02/02/2006
(Street)

ST. LOUIS, MO 63167		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 02/02/2006   M   10,517 A $ 41.61 38,872 D  
Common Stock 02/02/2006   M   7,210 A $ 32.385 46,082 D  
Common Stock 02/02/2006   M   2,434 A $ 21.295 48,516 D  
Common Stock 02/02/2006   S   200 D $ 84.33 48,316 D  
Common Stock 02/02/2006   S   800 D $ 84.32 47,516 D  
Common Stock 02/02/2006   S   2,400 D $ 84.26 45,116 D  
Common Stock 02/02/2006   S   900 D $ 84.24 44,216 D  
Common Stock 02/02/2006   S   617 D $ 84.29 43,599 D  
Common Stock 02/02/2006   S   600 D $ 84.27 42,999 D  
Common Stock 02/02/2006   S   200 D $ 84.04 42,799 D  
Common Stock 02/02/2006   S   800 D $ 84.02 41,999 D  
Common Stock 02/02/2006   S   1,000 D $ 84.11 40,999 D  
Common Stock 02/02/2006   S   500 D $ 84.1 40,499 D  
Common Stock 02/02/2006   S   2,400 D $ 84.06 38,099 D  
Common Stock 02/02/2006   S   100 D $ 84.08 37,999 D  
Common Stock 02/02/2006   S   444 D $ 84.45 37,555 D  
Common Stock 02/02/2006   S   9,200 D $ 84.28 28,355 D  
Common Stock               3,295 I By 401(k) Plan

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Option (Right to Buy) $ 41.61 02/02/2006   M     10,517 11/15/2005(1) 10/28/2014 Common Stock 10,517 $ 0 21,033 D  
Option (Right to Buy) $ 32.385 02/02/2006   M     7,210 03/15/2005(2) 02/26/2014 Common Stock 7,210 $ 0 14,420 D  
Option (Right to Buy) $ 21.295 02/02/2006   M     2,434 06/17/2004(3) 06/16/2013 Common Stock 2,434 $ 0 1,216 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
LEIDY MARK J
800 N. LINDBERGH BLVD.
ST. LOUIS, MO 63167		       EVP-Manufacturing  

Signatures

 Christopher A. Martin, Attorney-in-Fact   02/06/2006
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) One third of the options became exercisable on November 15, 2005, one-third of the options become exercisable on November 15, 2006 and one-third of the options become exercisable on November 15, 2007, subject to the terms and conditions of the Monsanto Company Long Term Incentive Plan.
(2) One-third of the options became exercisable on March 15, 2005, one-third of the options become exercisable on March 15, 2006 and one-third of the options become exercisable on March 15, 2007, subject to the terms and conditions of the Monsanto Company Long Term Incentive Plan.
(3) One-third of the options became exercisable on June 17, 2004, one-third of the options became exercisable on March 15, 2005 and one-third of the options become exercisable on March 15, 2006, subject to the terms and conditions of the Monsanto Company Long Term Incentive Plan.

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