**Exhibit 12.2**

CERTIFICATIONS BY CFO PURSUANT TO SECTION 302

I, Domenico Scala, certify that:

|   | 1.       | I    have reviewed this annual report on Form 20-F of Syngenta AG;                                                                                                                                                                                                                                                                                      |
|--------|----------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   |     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 2.  | Based        on my knowledge, this annual report does not contain any untrue statement        of a material fact or omit to state a material fact necessary to make the        statements made, in light of the circumstances under which such statements        were made, not misleading with respect to the period covered by this annual    report; |
|   |     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 3.       | Based        on my knowledge, the financial statements, and other financial information        included in this annual report, fairly present in all material respects the        financial condition, results of operations and cash flows of the company    as of, and for, the periods presented in this report;                                     |
|   |     |                                                                                                                                                                                                                                                                                                                                                    |
|   | 4.       | The        company's other certifying officer(s) and I are responsible for establishing        and maintaining disclosure controls and procedures (as defined in Exchange    Act Rules 13a-15(e) and 15d-15(e)) for the company and have:                                                                                                               |

|   |   |                                                                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                                                                                                                                                                       |
|--------|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   |   | a)                                                                                                                                                                                                                                                                                                                | Designed        such disclosure controls and procedures, or caused such disclosure controls        and procedures to be designed under our supervision, to ensure that material        information relating to the company, including its consolidated subsidiaries,        is made known to us by others within those entities, particularly during    the period in which this report is being prepared; |
|   |   |                                                                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                                                                                                                                                                       |
|   |   | b)                                                                                                                                                                                                                                                                                                                | [Paragraph omitted pursuant    to SEC Release Nos. 33-8238 and 34-47986]                                                                                                                                                                                                                                                                                                                                   |
|   |   |                                                                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                                                                                                                                                                       |
|   |   | c)                                                                                                                                                                                                                                                                                                                | Evaluated the effectiveness        of the company’s disclosure controls and procedures and presented in        this report our conclusions about the effectiveness of the disclosure controls        and procedures, as of the end of the period covered by this report based    on such evaluation; and                                                                                              |
|   |   |                                                                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                                                                                                                                                                       |
|   |   | d)                                                                                                                                                                                                                                                                                                                | Disclosed in this report        any change in the company’s internal control over financial reporting        that occurred during the period covered by the annual report that has materially        affected or is reasonably likely to materially affect, the company’s    internal control over financial reporting; and                                                                      |
|   |   |                                                                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                                                                                                                                                                       |
|   | 5.     | The        company's other certifying officer(s) and I have disclosed, based on our        most recent evaluation of internal control over financial reporting, to the        company's auditors and the audit committee of the company's board of directors    (or persons performing the equivalent functions): |
|   |   |                                                                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                                                                                                                                                                       |
|   |   | a)                                                                                                                                                                                                                                                                                                                | all significant deficiencies        and material weaknesses in the design or operation of internal controls over        financial reporting which are reasonably likely to adversely affect the company’s    ability to record, process, summarize and report financial information; and                                                                                                              |
|   |   |                                                                                                                                                                                                                                                                                                              |                                                                                                                                                                                                                                                                                                                                                                                                       |
|   |   | b)                                                                                                                                                                                                                                                                                                                | Any fraud, whether or        not material, that involves management or other employees who have a significant    role in the company's internal controls over financial reporting.                                                                                                                                                                                                                         |

 

Date: March 24, 2004 

 

|   | /s/ Domenico    Scala  |
|--------|-----------------------------|
|   |                             |
| Name:  | Domenico Scala              |
| Title: | Chief Financial    Officer  |

 

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