According to the requirements of Announcement No. 1745 and No. 2445 issued by the Ministry of Agriculture on April 5, 2012 and September 7, 2016, since July 1, 2014, the registration and production license of paraquat water agent shall be revoked, the production shall be stopped, and the registration of water agent for export use by mother drug manufacturers shall be retained, and the production shall be allowed exclusively for export. On July 1, 2016, the sale and use of Dioxide-fast water agent in China was stopped. The registration certificate of paraquat Collosol expired on September 25, 2018, and the registration for domestic use was no longer approved, and the sale and use of paraquat Collosol in China was prohibited from September 26, 2020.
At the same time, the scope of the international paraquat ban is also expanding, Vietnam in March 2017 issued a policy to ban paraquat; Thailand and Brazil have banned paraquat from December 2019 and 2020 respectively, which means that the era of paraquat is coming to dusk.
As a strong competitor of paraquat, enemy grass quickly ushered in the favor of the market.
Dioxacorn is a kind of contact herbicide which was developed and listed in 1958. It can be used not only as a herbicide in non-cultivated land, but also as a herbicide in cultivated land protection and as a seed crop blight reducer. It is suitable for weeding before sowing in non-cultivated land, non-cultivated land, orchard, crop row weeding. It can effectively prevent and control annual weeds such as cowweed, Humulus japonicum, Matang, Purslane, wild pond Artemis, Humulus humulus and other annual weeds. It also has good control effect on perennial weeds.
Diparaquat soon occupied a place in the herbicide market from its listing, but after the listing of paraquat in 1962, the market share of diparaquat was far less than paraquat due to the higher cost of use. With the large-scale ban of paraquat water in China and later in the international market in 2016, the herbicide has left a large number of market gaps, and Diaquat has ushered in a new round of development opportunities.
The enemy grass fast advantage
1, fast efficacy: the fast killing speed of the enemy grass is better than paraquat, the grass begins to die 24 hours after application, and it rains 1 hour after spraying, which has little effect on the efficacy.
2, safety and water and soil conservation: Although the enemy grass fast has a certain absorption, but will not hurt the roots of the crop, mainly touch. In addition, Diachro fast also continued the characteristics of paraquat's performance and no drifting drug damage. Because the enemy grass does not kill the root quickly, it is conducive to soil and water conservation, and the ridge is not easy to collapse.
3, broad-leaved grass: the enemy grass fast to some resistant weeds, especially broad-leaved weeds, the control effect is even better than phosphine grass.
4, low temperature resistance: When the temperature is below 15 ° C, the herbicidal effect of the enemy grass is more advantageous than that of phosphine.
5, the use of habits: Diacarpo and paraquat are both bipyridine herbicides, have essential similarities in weed control performance, compared with other herbicides, the terminal is still more accustomed to the use of diacarpo, and even the diacarpo and paraquat confusion.
Comparison of Dimethyl dichloride and dibromide
Dimethyl chloride and dimethyl bromide are the two main forms of dimethyl chloride.
Dimethylene salt can be completely dissociated in aqueous solution, and its toxicity is not affected by anions [1-2]. ICI Company developed dimethyl dichloride and dibromide in 1955, but due to the production process and cost problems, only dimethyl dichloride was commercialized, while Dimethyl dichloride has not been commercialized. Nanjing Red Sun Co., LTD., after 10 years of research, has made a major breakthrough in the production process of dichloride, and finally successfully developed a green new production process of "energy saving and emission reduction, circular economy" with independent intellectual property rights in 2016.
The only difference between dibromide and dibromide is anion, and the active ingredient of both is dibromide, but the production cost of dichloride is obviously better than that of dibromide. The results showed that the activity of diachlorodibromide and diachlorodibromide to Agrostis abtilon and Abutilon was better, and the activity of the two was similar. The inhibitory effect on barnyard grass was relatively weak, and the activity of diachloride on barnyard grass was better than diachloride dibromide. The inhibition effect on setaria was general, but the activity of dimethyl chloride was slightly lower than that of dimethyl bromide.
More cost advantages-dimethylol dichloride
Dioxane can be divided into dioxane dichloride and dioxane dibromide. Dioxane dibromide was commercialized first, and the common dioxane dibromide in the market is generally dioxane dibromide.
Bromine and bromine dichloride are formed by using bromine dibromine solution as raw material and chlorine gas as oxidant to oxidize bromine ions. Dibromide has better cost advantage than dibromide under the same conditions, and its efficacy is 1.4 times that of dibromide. It has a wide weed spectrum and can effectively control most annual broadleaf weeds and some grass weeds, and has excellent effect on malignant weeds and glyphosate-resistant weeds in the field. Good quick action, better than other herbicides; The residual amount is low, the soil is passivated and the poison is lost, the water and fertilizer are preserved, and the environment is friendly.
Dichloride is widely used in crop blight, which is conducive to the implementation of crop stubble and blight technology, can improve land utilization and crop yield, facilitate agricultural mechanization, and help save agricultural and industrial agricultural capital, etc., is an excellent variety to replace paraquat, glyphosate and other herbicide products, and is conducive to solving the "bottleneck" of high cost of farmers.
Domestic production situation
At present, there are a total of 14 domestic registration documents for the drug; 153 other dosage form registration documents.
In May 2022, Texas Green Ba conducted the first environmental impact assessment on the production project with an annual capacity of 10,000 tons of Digrass rapid agent, and its capacity was expanded to 14,000 tons/year.
Red Sun has applied for patents on the related technologies of Dioxachloride, and is the exclusive manufacturer of dioxachloride in China. It has the legal qualification for the production of dioxachloride mother solution and soluble solution. Chongqing Huge Biochemistry, a subsidiary of Red Sun, has a production capacity of 20,000 tons of dioxachloride. Sichuan Lier has an annual production capacity of 20,000 tons of grass.
Development prospect
Due to the large stock in foreign markets, foreign trade exports in 2023 have been affected, many domestic manufacturers have stopped, but they cannot affect the market, and the blank market left by the ban on paraquat in the European Union and Brazil and other markets will provide huge space for the rapid development of the enemy grass.
As one of the four giants of the herbicide, the enemy grass fast, has the advantages that glyphosate, glyphosate and paraquat do not have, the control effect of the enemy grass fast is better than glyphosate, and the price is lower than phosphate grass, and the use effect like paraquat will be the great advantage of the enemy grass fast occupy the market and rapid development.
Insecticidal herbicides left a large number of market gaps, and the enemy grass quickly welcomed new opportunities
2023 10/31