Syngenta AG (SYT)

Basel, Switzerland, 15 November 2005

Syngenta will build a new Seed Care Institute at its Research and Development Center in Stein, Switzerland. This new, state-of-the-art center will serve as Syngenta’s global R&D facility for developing and testing seed treatment technologies. It will significantly expand the company’s capability to serve its customers, including seed companies, seed treaters and growers.

Construction will start in the first quarter 2006 and completion is expected by mid-2007. The total investment will be approximately $7 million in addition to the $40 million investment to build a new chemistry research laboratory for disease and insect control products announced earlier this year.

“This investment will accelerate our innovation capability and underpins our ambition to become the leader in this fast growing segment” said Kris Sirchio, Head of Syngenta Professional Products. “The Institute will be an industry leading center for technology development and training. It will enable novel seed treatments and associated services to reach the market sooner”.

Seed treatment, a technology in which crop protection ingredients are applied directly onto the seeds prior to sowing, is one of the most efficient and economic ways to protect crops from fungi, bacteria and insects. It is also the fastest growing segment in crop protection with a projected global market value of about $1.4 billion in 2005.

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2004 were approximately $7.3 billion. Syngenta employs some 20,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

Syngenta – 15 November 2005 / Page 1 of 1

Basel, Switzerland, 14 November 2005

Syngenta announced today it was celebrating its fifth anniversary by planting tens of thousands of trees around the world. To launch the program, the company will plant a tree for every employee, some 20,000 trees in all, in Africa.

Building on this national business units will also plant a tree for every employee in support of specific environmental and social initiatives in their country. In total, as many as 40,000 trees will be planted worldwide through the anniversary recognition.

“Since our formation in 2000, Syngenta has flourished and our fifth anniversary is an opportunity to celebrate,” said Michael Pragnell, Syngenta Chief Executive Officer. “This is our way of paying tribute to our employees who built the company, and to symbolize our commitment to sustainable agriculture. It is also a reminder of the meaning of the name Syngenta, derived from Greek and Latin origins: together with people.”

Syngenta was formed on 13 November 2000 from the merger of Novartis Agribusiness and Zeneca Agrochemicals. It has been pioneering corporate social responsibility programs particularly in the field of sustainable agriculture, soil conservation, water quality, employee well-being and community involvement; all of these are reflected in this initiative.

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2004 were approximately $7.3 billion. Syngenta employs some 20,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

Syngenta – 14 November 2005 / Page 1 of 1

Basel, Switzerland, 31 October 2005

Today at the 2005 British Crop Protection Congress (BCPC), Syngenta presented its new fungicide active ingredient to agricultural experts. Mandipropamid, developed under the code 446, controls late blight in potatoes and tomatoes as well as downy mildew in vines and a number of vegetable crops.

Mandipropamid, the first derivative of the chemical class of mandelamide fungicides, sets a new standard in performance: locking rapidly and tightly to the leaf’s waxy layer, it provides a highly effective, weatherproof and long-lasting barrier to diseases.

“Mandipropamid is a significant innovation. This new technology further strengthens our leading fungicide portfolio, which offers growers a complete range of solutions to control plant disease” said John Atkin, Chief Operating Officer, Syngenta Crop Protection. “Mandipropamid is one of eight new crop protection products planned for launch by 2012.”

Mandipropamid is scheduled for launch in 2007 and will be offered as single formulation as well as in spray programs with other Syngenta brands, including Ridomil Gold®, Shirlan®, Quadris Max® and Bravo®. This new compound will be marketed globally and peak sales are expected to exceed $100 million annually.

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2004 were approximately $7.3 billion. Syngenta employs some 20,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

Syngenta – 31 October 2005 / Page 1 of 1

Basel, Switzerland, 17 October 2005

Syngenta announced today that its new cereal herbicide, Axial, has received its first registration in the UK, one of the most important markets for cereals in Europe. Further registrations in other major cereal markets are anticipated in time for the 2006 season. Axial is expected to achieve peak global sales of at least $150 million.

Axial provides outstanding control of a broad spectrum of grass weeds, unprecedented crop safety in both wheat and barley, and flexible application timing in both autumn and spring.

John Atkin, Chief Operating Officer, Syngenta Crop Protection, said: “This registration further strengthens our broad product range for cereal farmers. Axial will set new standards in grass weed control and is one of the eight important products in our crop protection pipeline expected to be launched by 2012”.

The global cereal herbicide market is estimated at close to $2.5 billion.

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2004 were approximately $7.3 billion. Syngenta employs some 20,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

Basel, Switzerland, 10 October 2005

Syngenta announced today that Delta and Pine Land Company will offer Avicta™ Complete Pak for the 2006 United States planting season. A breakthrough in seed treatment technology, Avicta Complete Pak provides enhanced protection against nematodes, insects and diseases.

“The combination of D&PL’s leadership position in the cotton seed market with Syngenta’s innovative seed treatment technology provides an unsurpassed level of convenience for today’s cotton grower,” said Kris Sirchio, Head of Syngenta Professional Products. “It delivers comprehensive early-season protection and removes the complexity associated with application timing and labor intensive handling required with current control methods.”

“We are excited to offer cotton growers in the US this most convenient and effective method of protection against all major early-season pests,” said Randy Dismuke, Senior Vice President, Delta and Pine Land. “Avicta Complete Pak is the first new nematode management option in more than 30 years. It couples nematode management with very effective insect and disease protection provided on the seed from the moment it is put into the soil. Coupling this product with D&PL’s superior varieties provides cotton farmers a new option for their farms.”

Avicta is the first seed treatment to prevent crop loss from nematode, and is expected to give Syngenta leadership in a global market estimated at $500 to 600 million a year. Avicta Complete Pak is a combination of three Syngenta seed care products: Avicta, the insecticide Cruiser and the fungicide Dynasty CST.

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2004 were approximately $7.3 billion. Syngenta employs some 20,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

Delta and Pine Land Company (NYSE: DLP) is a leading commercial breeder, producer and marketer of cotton planting seed. Headquartered in Scott, Mississippi, with multiple offices in eight U.S. states and facilities in several countries, D&PL also breeds, produces and markets soybean planting seed in the U.S. For more information, please refer to www.deltaandpine.com.

Syngenta – 10 October 2005 / Page 1 of 2

Basel, Switzerland, 5 October 2005

Syngenta announced today that a $250m US Private Placement, with maturities of 15, 20 and 30 years, was significantly oversubscribed attracting demand from a number of leading US institutions.

Domenico Scala, Chief Financial Officer, said “This placement enables us further to extend the maturity of our outstanding debt at funding costs which are at historically low levels.”

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2004 were approximately $7.3 billion. Syngenta employs some 20,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

Syngenta – 5 October 2005 / Page 1 of 1

SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Basel, Switzerland, 26 September 2005

Syngenta announced today that it has entered a broad partnership agreement with COMPO, one of Europe’s leading suppliers of branded lawn and garden consumer goods. The two companies will develop and market a comprehensive range of plant protection and pest control products for the consumer lawn and garden market in Europe, excluding Switzerland where both companies will continue to operate independently.

The companies have also agreed to explore further cooperation opportunities in markets outside Europe in order to co-promote and co-develop their respective consumer lawn and garden businesses. Financial details of the agreement have not been disclosed.

“Combining Syngenta’s innovative plant protection portfolio with COMPO’s leading consumer brands will provide new and improved solutions for the lawn and garden in this one billion dollar market in Europe” says Kris Sirchio, Head of Syngenta Professional Products. “This alliance is a major step forward in the implementation of our growth strategy”.

“This cooperation is a breakthrough for COMPO and will ensure that we can best meet consumers’ changing needs”, says Arnim Weyrich, General Manager of COMPO. “We will be able to leverage our European consumer brands and retail relationships further in order to reach a broader audience with a wider range of lawn and garden solutions.”

Syngenta is a world leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high value commercial seeds market. Sales in 2004 were approximately $7.3 billion. Syngenta employs some 20,000 people in over 90 countries. Syngenta is listed on the Swiss Stock Exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

COMPO’s product range extends from potting soil through plant care products as well as lawn and garden fertilizers to products for professional horticulture. In 2004, COMPO, which has production facilities in several European countries, employed 1,300 people and posted revenues of about EUR 525 million. COMPO is part of K+S Group, the second largest provider of agricultural and specialty fertilizers and the largest salt producer in Europe. The K+S Group posted revenues of EUR 2,6 billion for 2004 and employs about 11,000 people. K+S is listed on all German Stock Exchanges (SDF). Further information is available at www.k+s.com.

Syngenta – 26 September 2005 / Page 1 of 2

Basel, Switzerland, 15 September 2005

Syngenta and INSEAD today announced the creation of a scholarship foundation for students from emerging countries to study for a Master of Business Administration degree (MBA) at INSEAD.

Syngenta’s donation is the largest ever scholarship gift received by INSEAD. The endowment will provide some four scholarships per year. INSEAD and Syngenta will award the first scholarships in November this year for the January 2006 MBA intake.

“The Syngenta Scholarship foundation is an important investment in the education of business leaders that will greatly benefit developing nations. It underpins our support to sustainable development in emerging countries around the world,” says Syngenta CEO Michael Pragnell. “We chose INSEAD as a top-tier international business school for its exceptional cultural diversity”.

“This gift is a significant boost for our fundraising initiative, The INSEAD Campaign: the business school for the world”, says Gabriel Hawawini, Dean of INSEAD. “Our school is founded on a vision of business as a force for good in society. In Syngenta we are delighted to have found an organisation that shares this vision and is prepared to invest in it through INSEAD.”

To be eligible for a Syngenta Scholarship, candidates must be nationals of an emerging country and have lived there for a significant period. A commitment to contribute to the future development of their country is also a requirement.

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2004 were approximately $7.3 billion. Syngenta employs some 20,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

Basel, Switzerland, 2 September 2005

Syngenta announced today that for health reasons, Heinz Imhof has decided to resign as Chairman of the Board.

The Board has appointed Martin Taylor, currently Vice Chairman, as non-executive Chairman. Rupert Gasser has been appointed Vice Chairman.

The Board would like to express its warmest thanks and appreciation to Heinz Imhof for his role in leading the formation and listing of Syngenta in 2000 and his important contribution as Chairman since its creation. It wishes him a long and happy retirement.

Martin Taylor (53) has been a member of the Board since the creation of Syngenta and has a broad knowledge of the Company as well as extensive international business experience. From 2000 until 2004 he was a member of the Audit Committee. In 2004 he was appointed Vice Chairman and member of the Chairman’s and Compensation Committees. Martin Taylor is currently an advisor to Goldman Sachs International and a Vice Chairman of RTL Group SA.

Rupert Gasser (66) has been a member of the Board since 2002. He is currently a member of the Scientific Advisory Board of Alcon Laboratories Inc. and President of Nestec SA.

Commenting on today’s announcement, Martin Taylor said: “The Board wishes Heinz Imhof a speedy and complete recovery.” He added: “I very much look forward to working with Michael Pragnell, CEO and his outstanding leadership team during Syngenta’s next phase of evolution.”

Martin Taylor: additional information

Martin Taylor's career has spanned the worlds of finance, industry, public policy and journalism.

After studying Chinese at Oxford University he worked for Reuters in Paris, Frankfurt and London, before moving to the Financial Times where he wrote for the Lex column.

In 1982, at the age of 30, he went to work for Courtaulds plc, becoming responsible for the textile division in 1987. This business was spun off as Courtaulds Textiles plc in 1990 with Martin as its Chief Executive. At the end of 1993 he became CEO of Barclays plc and served there for five years.

Syngenta – 2 September 2005 / Page 1 of 2

Basel, Switzerland, 20 May 2005

Syngenta announces that its Chairman, Heinz Imhof, is currently receiving medical treatment and has taken temporary leave of absence from the company. During his absence, the Vice-Chairman, Martin Taylor, will assume the role of acting Chairman.

Syngenta is a world-leading agribusiness committed to sustainable agriculture through innovative research and technology. The company is a leader in crop protection, and ranks third in the high-value commercial seeds market. Sales in 2004 were approximately $7.3 billion. Syngenta employs some 19,000 people in over 90 countries. Syngenta is listed on the Swiss stock exchange (SYNN) and in New York (SYT). Further information is available at www.syngenta.com.

Syngenta - 20 May 2005 / Page 1 of 1

SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.