940results about How to "Improve herbicidal activity" patented technology

The present invention relates to a synergistic herbicidal composition comprising N- [ [(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl] -2- [2-fluoro- 1 -(methoxymethylcarbony loxy)propyl] -3 -pyridine sulfonamide or N-[[(4,6-dimethoxy-2-pyrimidinyl)amino] carbonyl]-2-[2-fluoro-l-(hydroxy)propyl]-3-pyridine sulfonamide and other herbicidal active materials as active ingredient. The herbicidal composition of the present invention can increase the herbicidal efficacy against major weeds, and can reduce the use amount of active ingredients per unit area, due to the synergistic effect by mixing two herbicidal active ingredient having different physiological functions or different herbicidal activities.

The invention discloses pyridinooxazone-pyridinopyrimidone compounds and a preparation method and an application thereof. The pyridinooxazone-pyridinopyrimidone compounds have the following structures shown in formulae 1 and 2: R1 is hydrogen or chlorine; R2 is hydrogen, chlorine or fluorine; R3 is hydrogen, amido, methyl or carboxymethyl; X, Y and Z are nitrogen or hydrocarbon. The synthetic line comprises the following steps: dissolving amino substituted picolinic acid in an organic solvent; in the presence of organic alkali, carrying out reaction with substituted phenoxyacetyl chloride to obtain the pyridinooxazone compounds; and reacting the pyridinooxazone compounds with substituted amine in an organic solvent to obtain the pyridinopyrimidone compounds. The pyridinooxazone-pyridinopyrimidone compounds are used for preventing and treating weed. Part of the pyridinooxazone and pyridinopyrimidone compounds has high herbicidal activity and can effectively inhibit growth of dicotyledon.

The present invention relates to herbicidally active compositions, which comprise 3-[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)pyrazol-4-ylmethylsulfonyl]-4,5-dihydro-5,5-dimethyl-1,2-oxazole [common name pyroxasulfone] and at least one herbicide B which is an selected from protoporphyrinogen-IX-oxidase inhibitors.

The invention furthermore relates to the use of a composition as defined herein for controlling undesirable vegetation in crops. When using the compositions of the invention for this purpose the herbicide A and the at least one herbicide B can be applied simultaneously or in succession in crops, where undesirable vegetation may occur.

This invention relates to 3-acyl-pentazane-2,4-diketo compound. The compound (I) has high plant growing restraining and weed killing reactivity, and shows good selectivity to the plants. It can be the weed killing solvent in the broad-leave field to remove single-leave weed. There into, R1 : H, alkyl, alkoxyl alkyl, alkylogen, alkylogen alkoxyl alkyl, substituted aromatic base and etc; R2R4: H, alkyl, alkoxyl, phenyl alkoxyl, hydroxyl alkyl, alkoxyl, alkylogen, alkylogen alkoxyl, nitryl, cyan and etc, R2, R4 can be the same or different; R3: substituted phenyl, substituted naphthyl, substituted pyridyl, substituted thiazolyl, cyan and etc.

The invention relates to a herbicide composition containing nicosulfuron, atrazine and clopyralid, which optimally uses the nicosulfuron, the atrazine and the clopyralid as active ingredients, wherein the weight ratio of the atrazine to the nicosulfuron to affinity is 40-1:20-1:10-1. The herbicide composition has the advantages of low toxicity, weak allergenicity and few damages to human and livestock, broad herbicide controlling spectrum and remarkable weed control strengthening effect and is suitable for preventing and controlling various weeds in fields of various crops, particularly corn fields.

The invention belongs to the field of pesticides, and relates to a mixed herbicide composition containing bispyribac-sodium and cyhalofop-butyl. The herbicide composition adopts the bispyribac-sodium and the cyhalofop-butyl as main active components, the weight ratio of the bispyribac-sodium and the cyhalofop-butyl is 1 to 99:1 to 99, and the herbicide composition is mainly applied to postemergence weeding in paddy fields, and particularly can prevent and get rid of annual gramineous weeds, broadleaf weeds and cyperaceous weeds in paddy fields. Compared with single agents, the herbicide composition delays the resistance of weeds under the premise that the pesticide effect is enhanced, has a broad weeding spectrum and long persistence period and is safe for rice and next-stubble crops.

The present invention relates to herbicidally active compositions, which comprise 3-[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)pyrazol-4-ylmethylsulfonyl]-4,5-dihydro-5,5-dimethyl-1,2-oxazole [common name pyroxasulfone] and at least one herbicide B and at least one herbicide B which is selected from group consisting of synthetic auxins and auxin transport inhibitors.

The invention furthermore relates to a method for controlling undesirable vegetation, which comprises applying an herbicidal composition according to the present invention to the undesirable plants. Application can be done before, during and/or after, preferably during and/or after, the emergence of the undesirable plants. The herbicide A and the at least one herbicide B can be applied simultaneously or in succession.

The invention discloses application of 4-alkyl-5-(1,2,4-triazole-1-yl)-2-benzyl imino thiazole in the preparation of weedicide. The 4-alkyl-5-(1,2,4-triazole-1-yl)-2-benzyl imino thiazole is shown in the chemical structural formula I; and in the formula I, R is selected from CI-2 alky, C3-4 straight-chain and branched-chain alkyl, and Ar is selected from phenyl or substituted phenyl.

The invention discloses a weed controlling compound pesticide composition. The pesticide composition contains such active ingredients as fluroxypyr or esters thereof and topramezone, wherein the weight ratio of fluroxypyr or esters thereof to topramezone is 15: (1-3). The pesticide composition is characterized in that the dosage form of the pesticide composition is wettable powder or water dispersible granules; based on the total weight of the composition, the content of fluroxypyr or esters thereof is 10-70%, the content of topramezone is 2-30% and the content of additives is 10-88%; and theamount of the esters of fluroxypyr is converted into the amount of fluroxypyr. The invention also discloses a preparation method of the wettable powder or water dispersible granules. The pesticide composition is formed by compounding fluroxypyr or esters thereof and topramezone, has low toxicity, wide weed control spectrum, quick effect, good persistence and medium cost, can control broadleaf weeds, annual grass weeds and the like, is a more ideal pesticide variety for controlling weeds in the maize fields and has the advantages of simpleness in production, convenience and safety in use, zeroenvironmental pollution and the like.

The invention discloses a synergic herbicide composition containing cyhalofop-butyl and 2,4-dichlorophenoxyacetic acid and application thereof. The herbicide composition comprises the cyhalofop-butyl and the 2,4-dichlorophenoxyacetic acid which serve as the main active ingredients, wherein the mass ratio of the cyhalofop-butyl to the 2,4-dichlorophenoxyacetic acid is 1-60:1-60. The synergic herbicide composition can be used for preparing herbicides for controlling post-emergence weeds in paddy field. Compared with single-composition herbicide, the herbicide composition has a broad herbicide spectrum and acts for a long time on the premise of improving the herbicide effect, is safe for the paddy fields and after-reap crops and particularly has obvious effect of controlling various gramineous weeds and broadleaf weeds in the paddy fields.

The present invention relates to herbicidally active compositions, which comprise 3-[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)pyrazol-4-ylmethylsulfonyl]-4,5-dihydro-5,5-dimethyl-1,2-oxazole [common name pyroxasulfone] and at least one herbicide B which is an inhibitor of the electron transfer in photosynthesis and which is selected from the groups of: b.1 arylurea herbicides; b.2 triazin(di)one herbicides; b.3 terbuthylazine; b.4 pyridazinone herbicides; b.5 phenylcarbamate herbicides; b.6 nitrile herbicides; b.7 bentazone and its salts such as bentazone sodium; and b.8 methylthiotriazine herbicides. The invention furthermore relates to the use of a composition as defined herein for controlling undesirable vegetation in crops which, by genetic engineering or by breeding, are resistant to one or more herbicides and/or pathogens, such as plant-pathogenous fungi, and/or to attack by insects; preferably resistant to one or more herbicides that act as inhibitor of the electron transfer in photosynthesis. The invention furthermore relates to a method for controlling undesirable vegetation, which comprises applying an herbicidal composition according to the present invention to the undesirable plants. Application can be done before, during and/or after, preferably during and/or after, the emergence of the undesirable plants. The herbicide A and the at least one herbicide B can be applied simultaneously or in succession.

The invention relates to the field of pesticides, particularly to a thiotriazinone isoxazoline compound, a preparation method and application thereof, a herbicide containing the thiotriazinone isoxazoline compound, and a protoporphyrinogen oxidase inhibitor, wherein the thiotriazinone-containing isoxazoline compound has a structure represented by a formula (I), and R<1> and R<2> are respectively and independently selected from H, -NH2, C1-C6 alkyl or C1-C6 halogenated alkyl and the like. The thiotriazinone isoxazoline compound provided by the invention can efficiently inhibit the activity of plant protoporphyrinogen oxidase, and has good herbicidal activity and crop safety.

The invention belongs to the field of pesticide, and discloses a herbicidal composition containing diflufenican and clodinafop-propargyl and application thereof. The diflufenican and the clodinafop-propargyl are used as main active ingredients in the herbicidal composition; the mass ratio of the diflufenican to the clodinafop-propargyl is 1-80: 1-80; and the diflufenican and the clodinafop-propargyl account for 5 to 85 percent of the total mass of the herbicidal composition. The herbicidal composition can be applied in preparation of herbicide for controlling weeds among barley or wheat fieldseedlings, particularly in preparation of herbicide for controlling various gramineous weeds and broadleaf weeds in wheat or barley fields. Compared with a single-component herbicide, the herbicidal composition delays the weed resistance, has broad herbicidal spectrum and acts for a long time on the premise of improving herbicide effect, and is safe for wheat, barley and afterculture crops.

The invention relates to 3-substituted cyclopropane carbonyl pyrrolidine-2,4-diketone and the herbicidal activity thereof. A compound (I) has high plant growth inhibition activity and herbicidal activity and shows up good selectivity to rapes, wherein R1 and R2 are CH3, Cl, Br or CF3, and R3 is -CH(CH3)2, -CH2CH2CH3, -CH(CH3)CH2CH3, -CH2CH2CH2CH3, CH2=CHCH2- or cyclo-C3H5.

The invention discloses a 5-(2-aminothiazole-4-yl) benzofuranol etheric compound with herbicidal activity, which is shown in a formula (I) and a preparation method. The chemical structural formula of a compound shown in the formula (I) has the characteristics as follows: R is selected from H, C1-C2 alkyl groups, and C3-C4 linear alkyl groups or branched alkyl groups; Ar is selected from a phenyl group, a substituted phenyl group and a pyridyl group; and R1 is selected from the H, the C1-C2 alkyl groups, and the C3-C4 linear alkyl groups or branched alkyl groups. The preparation method of the 5-(2-aminothiazole-4-yl) benzofuranol or phenolic ether comprises the following steps of: heating 2-halogen-1-(7-hydroxyl/alkoxyl-2,2-dimethyl-2,3-dihydrobenzofuran-5-yl) azululanone and aryl thiourea with acetone, and stirring and reacting the mixture to obtain a salt of the 5-(2-aminothiazole-4-yl) benzofuranol or phenolic ether; and neutralizing the salt of the 5-(2-aminothiazole-4-yl) benzofuranol or phenolic ether with stronger ammonia water so as to obtain the 5-(2-aminothiazole-4-yl) benzofuranol or phenolic ether. The 5-(2-aminothiazole-4-yl) benzofuranol etheric compound disclosed by the invention has good herbicidal activity and can be used as a herbicide for preventing and removing gramineae grassy weeds.

The invention discloses a herbicidal composition containing fluazifop-p-butyl and clethodim and application thereof. The herbicidal composition takes fluazifop-p-butyl and clethodim as the main active ingredients, wherein the mass ratio of fluazifop-p-butyl to clethodim is (1-70):(1-80) and fluazifop-p-butyl and clethodim account for 5-85% of the herbicidal composition by mass. The herbicidal composition has obvious effect on preparing the herbicides for controlling the postemergence weeds in the soybean fields, especially the herbicides for controlling various grass weeds in the soybean fields. Compared with the single agent, the herbicidal composition delays weed resistance, has wide herbicidal spectrum and long efficacy duration and does no harm to the rapes and the aftercrops on the premise of improving the drug effect.

The invention discloses a kind of pyrimidine diketone compounds containing a benzoxazine ring and application thereof. The pyrimidine diketone compounds containing the benzoxazine ring are compounds with the structure shown as a general formula (1) in the specification, and in the formula (1), R1 is selected from hydrogen or an alkyl with the carbon atom number of 1-6, R2 is an ester with the carbon atom number of 2-10, and X is selected from halogen. The pyrimidine diketone compounds containing the benzoxazine ring possess high weeding activity.