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Herbicide Development
Shanghai AgroChina Chemical Co.,Ltd | Updated: Sep 20, 2017

The beginning of the chemical weeding of farmland can be traced back to the late 19th century, when the control of European grape downy mildew, the occasional discovery of Bordeaux can harm some cruciferous weeds without harming cereal crops; France, Germany, the United States also found that sulfuric acid and copper sulfate and other herbicides, and used in wheat and other places weeding. The organic herbicide period began in 1932 with the discovery of selective herbicide-hydroquinone. The advent of the the 1940s 2, 4-drops greatly facilitated the rapid development of the organic herbicide industry. The synthesis of glyphosate in the 1971 is a major breakthrough of Organophosphorus herbicides, which has the characteristics of broad killing grass and no pollution to the environment. Combined with the emergence of a variety of new dosage forms and new technologies, the weeding effect is greatly improved. In 1980, the world's herbicides accounted for 41% of total pesticide sales, surpassing pesticides and jumping first.

Among them are O-isopropyl-N-phenyl carbamic acid [O-isopropy-n-phe-nylcarbamate, abbreviated IPC: c6h5nhcooch-(CH3) 2],-cresol sodium (sodium Dinitro-o-cresylate) and so on. The most famous herbicide with auxin action is 2,-, which is thought to disrupt hormonal balance in plants and make them physiologically dysfunctional, but it is a potent herbicide for plants other than grasses. It is generally believed that this selectivity is determined by the size of the plant species to 2, the-detoxification intensity, or because of 2, the-concentration varies with plant species.

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