428 results about "Mesotrione" patented technology

The invention discloses a tembotrions compound cornfield herbicide. According to the adopted technical scheme, the herbicide comprises the following components in percentage by weight: 5-80 percent of effective components, 5-15 percent of auxiliaries and 5-80 percent of filler, wherein a first effective component is tembotrions, and a second effective component is any one of atrazine, terbuthylazine / nicosulfuron, foramsulfuron, rimsulfuron / fluroxypyr, MCPA-Na / mesotrione, sulcotrione and topramezone; the weight ratio of the first effective component to the second effective component is (1:8)-(8:1). The technical effect is that multiple grassy weeds, broadleaf weeds and cyperaceae weeds which can be prevented by the independent tembotrions can be also prevented by the tembotrions compound cornfield herbicide; furthermore, a prevention effect for part of grassy weeds and part of broadleaf weeds is improved, the herbicide controlling spectrum is expanded, the safety to the corns is improved, the drug using amount is reduced, the prevention and treatment cost is reduced, and the pollution to the environment is reduced.

The present invention relates to the field of pesticide herbicides, and discloses a herbicide composition and a herbicide containing the herbicide composition, the herbicide composition comprises a component A and a component B, the component A is a triketone compound shown as formula (I), and the component B is at least one selected from the group consisting of triazine herbicides, hydroxybenzonitrile herbicides, triazolinone herbicides, diphenyl ether herbicides, pyridinecarboxylic acid herbicides, phenoxycarboxylic acid herbicides, benzoic acid herbicides, pyridine herbicides, chloroacetamide herbicides, sulfonylurea herbicides, triazolopyrimidine herbicides, bentazone, mesotrione and topramezone. The herbicide composition can broaden the herbicidal spectrum and can improve the controleffect and retard the occurrence of weed drug resistance and anti-drug property.

The invention is to provide a weeding combination with a wide weed control spectrum, high activity and lasting effect. Active principles of the weeding combination provided by the invention are Alpha and Beta. Alpha is a compound or a salt thereof expressed by the formula (I); in the formula, R is a hydrogen atom or -COCH2OCH3. Beta is at least one compound selected from: at least one sulfonylurea compound selected from (B1.1) Bensulfuron-Methyl, (B1.2) azimsulfuron and so on; (B2.1) pyriminobac-methyl; (B3.1) an acetamide compound such as Pretilachlor; at least one benzoyl compound selected from (B4.1) benzobicylon, (B4.2) mesotrione and so on; (B5.1) a simetryne and so on.

The invention discloses sugarcane field herbicide for low-volume spraying. The herbicide is in a form of a suspending agent; the pesticide ingredients include ametryn and herbicide II, wherein the herbicide II is prepared from one or combination of two of agroxone, diuron, hexazinone, tebuthiuron, halosulfuron-methyl, trifloxysulfuron, mesotrione or topramezone. According to the sugarcane field herbicide for low-volume spraying, ametryn and the herbicide II are mixed in a certain ratio and have synergistic effect on removing weeds of a sugarcane field, and the prevention and treatment effect is obviously superior to that of single agent; meanwhile, the herbicide can be prepared into the suspending agent for low-volume spraying, and therefore, the drift possibility can be obviously reduced, and the wetting and spreading performances of the components of pesticides can be improved; the herbicide also has the advantages of labor saving, water saving, drug saving, high in efficiency, long acting, environmental protection, and low in cost; the labor intensity can be greatly alleviated; the manual drug applying efficiency is improved, the labor can be greatly released, the agricultural production cost can be reduced, and the modern level of weeding the sugarcane field can be increased.

The invention discloses a synthesis method of mesotrione. The method includes the following steps that firstly, acylation is performed, wherein 2-nitro-4-methylsulfonylbenzoic acid and acylating agents are subjected to an acylation reaction under catalysis of depolymerizing agents, acylation reaction liquid is obtained, and the temperature of the acylation reaction is 10-70 DEG C; secondly, esterification is performed, wherein acid binding agents and 1,3-cyclohexanedione are added in esterification reaction liquid, an esterification reaction is performed, the esterification reaction liquid is obtained, the temperature of the esterification reaction is 30-65 DEG C, and the acid binding agents are inorganic acid; thirdly, rearrangement is performed, wherein rearrangement agents are added in the esterification reaction liquid so that a rearrangement reaction can be performed, and coarse product reaction liquid is obtained; fourthly, refining is performed, wherein the coarse product reaction liquid is subjected to alkali liquor reverse extraction, acidification and recrystallization, and mesotrione is obtained. The method is easy to operate, the raw materials are easy to obtain, the reactant conversion rate is high, reaction is thorough, the purity of the product is high, and the synthesis method is applicable to industrial production.

The invention provides a postemergence cassava field herbicide with mesotrion as an active component, which comprises the mesotrion as the active component, and after being added with suitable adjuvant and carrier, the postemergence cassava field herbicide can be prepared into various agent forms such as suspension, water-dispersible granules, wettable powder, aerosol, slow-release agent, granules, emulsion in water, microemulsion or effervescent tablets. As selective herbicide for cassava fields, the herbicide cannot cause chemical resistance, has a good control effect on gramineous weeds, latifolious weeds and cyperaceae weeds, can comprehensively prevent and eliminate a variety of weeds in cassava fields, is safe and low in toxicity and residue for cassava, is easy to popularize, decreases labor intensity, and reduces the production cost.