**Exhibit      12.2**

|   | 1.     | I                  have                  reviewed this annual report on Form 20-F of Syngenta                  AG;                                                                                                                                                                                                                                                                                                                                                                                 |
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|   | 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; |
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|   | 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 annual                  report;                                                         |
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|   | 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) and internal control over financial                  reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)))                  for                  the company and have:   |
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|   |   | 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 annual report is being                  prepared; |
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|   |   | b)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | Designed                  such                  internal control over financial reporting, or caused such internal                  control                  over financial reporting to be designed under our supervision,                  to provide                  reasonable assurance regarding the reliability of financial reporting                  and                  the preparation of financial statements for external purposes in                  accordance with generally accepted accounting                  principles; |
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|   |   | c)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | Evaluated                  the                  effectiveness of the company’s disclosure controls and procedures and                  presented in this annual report our conclusions about the effectiveness                  of                  the disclosure controls and procedures, as of the end of the period                  covered by this annual report based on such evaluation;                  and |
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|   |   | d)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | Disclosed                  in                  this annual 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 |
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|   | 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):                                                                 |
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|   |   | 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 |
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|   |   | 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. |

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