Zhang Yibin, deputy chief engineer of the Shanghai Institute of Pesticides, said that sulfonylurea herbicides are one of the most widely studied herbicides in the world, and their sales market is second only to amino acid herbicides (glyphosate, etc.). Rice, soybeans, corn, and other cereal crops such as wheat, barley, and millet are the main market for the application of sulfonylurea herbicides and have been most successfully applied in rice fields.
At present, countries are continuing to develop new sulfonylurea herbicides, especially for the development of high-end products used in the fields of lawns, vegetables, fruits, etc., and have played a positive role in the market. The Korean Institute of Chemical Technology developed a broad-spectrum, post-emergence herbicide K-12060 last year to control broad-leaved weeds; Bayer Corporation combined a sulfonylurea herbicide with triadimefon and introduced a new structure mainly for corn. Herbicides; Sumitomo Chemical Company of Japan developed non-selective broad-spectrum herbicides TH-547 and TH-501 which are mainly used for rice.
According to statistics, in 2007, sales of global sulfonylurea herbicides were US$2.035 billion, an increase of 5.7% over 2006, accounting for 11% of the global herbicide market. Among the 32 sulfonylurea herbicide products, there are 8 varieties with sales of hundreds of millions of dollars. Among them, nicosulfuron topped the list with 230 million U.S. dollars and methylsulfuron (Sulfasulfuron) was followed by 190 million U.S. dollars.
Zhang Yibin also specifically pointed out that the prospects for the four herbicides such as methylsulfuron, iodosulfuron, benzamidesulfonyl, and trifloxysulfuron are particularly promising, and the average annual growth rate of global sales reached from 2002 to 2007, respectively. 107%, 46.8%, 103.6%, 40.6%. However, people in the industry said that due to the impact of phytotoxicity, the enthusiasm for the use of herbicides in some areas has been hit, but the development of safeners (agents that can eliminate herbicides on crop phytotoxicity) will ease their impact. At the same time, as the development of transgenic crops has been on the rise in recent years, the market for soy and sulfonylurea herbicides for corn will be threatened.
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