156 results about "Metribuzin" patented technology

An improved herbicide composition is one kind of mixture comprising 2-(4,6-dimethoxy pyrimidyl-2-aminoformamidosulfonyl)-N,N-dimethyl nicotinamide and at least one of 1,4-D butylate, metribuzin, sulcotrione and atrazine. It has high herbicidal effect to crab grass, green bristle grass, goose grass, etc. in corn field, and its herbicidal effect is higher than that of its single component.

The invention relates to a weeding composition containing active components of oxaziclomefone and penoxsulam in a weight ratio of 1:20-20:1. The weeding composition can be prepared into a suspension agent, an oil suspension agent, a wettable powder and a water dispersion granule according to the application requirements, and can be applied to control of annual weeds in rice fields. The composition has control effect on weeds in rice fields better than that of each single agent, and can reduce the dosage, delay drug resistance of weeds and mitigate environmental pollution.

Herbicidal compositions are disclosed comprising an effective amount of flufenacet, diflufenican and metribuzin. A method of controlling harmful plants is disclosed. The compositions may be used flexibly, e.g, in post-emergent and/or pre-emergent applications. The compositions may be used prior to sowing a crop. The compositions may provide enhanced compatibility with crops. The compositions may be used on different soil types, e.g., with high-organic matter soils and/or at different soil depths, e.g., at shallow soil depths. The compositions may be used against herbicide-resistant plant species, for example EMR and TSR-resistant species and/or may be used for resistance management. The compositions may be used with various irrigation techniques.

The invention discloses a method for pretreating wastewater produced during producing a metribuzin pesticide, belonging to the field of treatment of wastewater produced during producing pesticides. The method comprises the following steps: (1) recycling triazone in triazone wastewater through a liquid membrane separation process; (2) recycling metribuzin in methylated wastewater through a complexation extraction process; and (3) recycling methanol in methylated wastewater through rectification. The method has the following advantages: the treatment effect is good; the raw material and product recovery rates are high; resource utilization of the wastewater produced during producing metribuzin can be realized; the matters with difficulty in biodegradation in the wastewater are reduced; the biochemical property of the wastewater is improved; the problem of stable discharge up to the standard of the wastewater produced during producing the metribuzin pesticide can be effectively solved; and the method has obvious environmental, economic and social benefits.

The invention relates to a herbicidal composition containing mesotrione. The composition is mainly characterized in that: the herbicidal composition contains 1-60% of an active component A mesotrione, 1-80% of an active component B, an assistant, and other excipients, wherein the active component B is selected from clopyralid, pendimetalin, dicamba, and metribuzin; and the composition can be prepared into a wettable pulvis, a water dispersible granule, a suspending agent, a suspended emulsion, a micron emulsion, and an emulsion in water. The herbicidal composition of the present invention can be used for controlling weeds in fields.

The invention discloses a method for treating wastewater produced by methylation reaction in metribuzin synthesis. In the method, the wastewater produced by the methylation reaction in the metribuzin synthesis is added with an acidic treating agent, and the obtained mixture is heated to 90 DEG C-120 DEG C and refluxed for deodorization and decolorization; and volatile gas in the wastewater and gas produced in the reflux are absorbed by alkaline solution for deodorization. Methanol in the wastewater is recovered by a batch distillation method. Residual liquid is heated to 100 DEG C-150 DEG C for evaporation, and then the residual liquid is naturally cooled by stirring until sodium bromide crystal is separated out. Filtrate is oxidized by an oxidant at the oxidation temperature of 50 DEG C-80 DEG C. A system is cooled to 10 DEG C-40 DEG C, and bromine in the system is extracted by an organic extractant, thus obtaining organic phase extracting solution with the bromine. The method helps solve the problem of treating methylated wastewater in metribuzin production, and reduce environmental pollution and production cost, the recovery rate of the bromine reaches more than 93%, and the method has good use value, and is simple and feasible.

The present invention relates to the technical field of pesticide production, and discloses a weeding composition as well as a preparation method and application thereof. The composition contains two active components such as trifluoro-metribuzin and terbutryn, then an emulsifier and a thickener are added and mixed with water; and finally a suspending agent, namely the composition, is prepared after high-speed shearing, wet sand milling and finally homogeneous filtration. The weight ratio of trifluoro-metribuzin to terbutryn in the composition is 1: (30-60), and the weight percentage of the two active components such as trifluoro-metribuzin and terbutryn in the composition is 30-70%. The weeding composition disclosed by the present invention is mainly used for soil treatment, and can effectively prevent and control weeds in wheat and corn fields. The defect of single active component in prevention and control is improved, and the weeding composition has a remarkably synergistic effect in preventing and controlling both annual gramineous weeds and broadleaf weeds and cyperaceous weeds. The composition not only can effectively prevent and control the weeds but also is good in safety, and has no effect on afterreap crop, so that the composition is an ideal weeding composition.

Herbicidal compositions are disclosed comprising an effective amount of flufenacet and the other herbicides prosulfocarb and metribuzin. Further, a method of controlling harmful plants is disclosed. The disclosed herbicidal compositions have an improved application profile with regard to a simplified application process which reduces costs for the user and is thus more environmentally compatible. The herbicidal action on the weed plants is comparable, and at the same time there is an enhanced crop compatibility. The disclosed herbicidal compositions have an improved application flexibility of the active compounds extending into post-emergence of the crop and weed plants. The herbicidal action on the weed plants is improved, and there is an enhanced crop compatibility. The disclosed herbicidal compositions have an improved application flexibility of the active compounds which allows an application prior to sowing of the crop. The herbicidal action on the weed plants and the crop compatibility is markedly improved on pre-sowing application, and at the same time there is an enhanced crop compatibility. The disclosed herbicidal compositions have an improved reliability of action on varying irrigation. The reliability of action on varying irrigation is improved. The mixture compensates for possible activity losses via the gas phase and leaching of the active compounds. The disclosed herbicidal compositions have an improved reliability of action on soils having different soil properties: the application flexibility of the mixture on different soil types is improved. The mixture improves in particular the activity on soils having a relatively high content of organic substances at a comparable crop compatibility. The disclosed herbicidal compositions have an improved reliability of action on resistant weed plant species: the reliability of action against TSR- and EMR-resistant plant species is improved. The mixture is suitable for an effective resistance management. The disclosed herbicidal compositions have an improved reliability of action at different sowing depths: the mixture improves the reliability of action at different sowing depths.

The invention discloses a weeding composite material for avoiding soil consolidation. The material is prepared from a modified slow release filler, a soil amendment, silica gel, talcum powder, acetyl chitosan, fucoidan, sodium polyphosphate, hexamine, sulfamic acid, sodium percarbonate, amide percarbonate, sodium chloride, copper sulfate, ferrous sulfate, dichlorphenoxyacetic acid, penoxsulam, pyribenzoxim, flucetosulfuron, quinclorac, cyhalofop-butyl, metribuzin, fentrazamide, octyl methoxycinnamate, glycerin, n-butyl acetate, monopotassium phosphate, sodium tetraborate and dodecylbenzene sodium sulfate. The weeding composite material can carry out efficient high-quality release on a weeding additive to improve the efficiency and quality of weeding and meanwhile avoid soil consolidation and soil depletion in the process of weeding.

The invention discloses a composite herbicide containing rimsulfuron, efficient haloxyfop-methyl and metribuzin and application of the composite herbicide. The herbicide comprises the following main effective components: the rimsulfuron, the efficient haloxyfop-methyl and the metribuzin, wherein the content of the rimsulfuron, the efficient haloxyfop-methyl and the metribuzin in the herbicide is 25-38%; the mass ratio of the rimsulfuron to the efficient haloxyfop-methyl to the metribuzin is (8-16) to (5-20) to (4-15). The composite herbicide also comprises a wetting dispersant, an emulgator, a stabilizer, a suspension agent and a methyl oleate additive, so that the composite herbicide can be prepared into a dispersible oil suspension. The composite herbicide has a remarkable effect of post-emergence weeding in potato fields and in particular weeding of various gramineous weeds and broadleaf weeds. Compared with binary composite preparations or other ternary composite preparations, for the composite herbicide disclosed by the invention, the weed resistance is delayed under the condition that the herbicide effect is improved; a weeding spectrum is expanded; both gramineous and broadleaf weeds are weeded; the composite herbicide is long in lasting period and reliable in safety on potatoes and afterreap crops.

The invention provides metribuzin pesticide residue degrading bacteria and a microbial agent produced through the same. The bacterial strain is gram-positive bacteria, and is authenticated as Rhodococcus sp. and preserved in the China Center for Type Culture Collection on June 29, 2015, and the preservation number of the bacterial strain is CCTCC NO: M2015392. A culture solution obtained after QCT10 bacterial strain fermentation is the microbial agent. According to the QCT10 bacterial strain and the microbial agent produced through the same, the quantity of metribuzin pesticide residues in soil can be reduced by 50% or above, and the problem that the metribuzin pesticide residues exceed the standard in agricultural production can be solved.

The invention discloses a composite herbicide for eliminating barnyard grass. The composite herbicide comprises the following components in parts by weight: 3 to 6 parts of mesotrione, 0.5 to 1 part of penoxsulam, 1 to 3 parts of pyribenzoxim, 0.8 to 3 parts of flucetosulfuron, 10 to 15 parts of quinclorac, 2 to 5 parts of cyhalofop-butyl, 0.2 to 0.6 part of metribuzin, 15 to 18 parts of fentrazamide, 4 to 8 parts of pyrazosulfuron-ethyl, 0.004 to 0.008 part of ferulic acid, 0.004 to 0.008 part of p-hydroxy benzoic acid, 1 to 4 parts of penetration enhancer, 7 to 10 parts of surfactant, and 10 to 12 parts of safener. The provided composite herbicide has high herbicidal efficiency.

The invention discloses a treatment process for discharging metribuzin wastewater in compliance with standard in coordination with salt recycling and a running method of the treatment process, and belongs to the technical field of pesticide wastewater treatment. The treatment process mainly comprises the steps of precipitation filtration, resin adsorption, pH neutralization, MVR, pH adjustment andFenton advanced oxidation. Salt recycling is conducted by steps as follows: performing evaporation crystallization and centrifugal drying to obtain refined industrial sodium sulfate. The concentration of COD in the metribuzin wastewater can be greatly reduced by resin adsorption treatment, and salt in wastewater can be further removed by MVR. Finally, Fenton advanced oxidation treatment is adopted, and effluent meets the connection standard of the park pipe network. Efficient and stable treatment of the metribuzin wastewater which contains high COD and high salt and is difficult to biologically degrade is realized, so that the metribuzin wastewater is discharged continuously in compliance with standard, and recycling of sodium sulfate in the wastewater is also realized.

The invention relates to a herbicidal composition containing metribuzin and haloxyfop-R-methyl. The effective components of the herbicidal composition are metribuzin and haloxyfop-R-methyl in a weight part ratio of 30:1-1:30. According to the invention, the metribuzin and haloxyfop-R-methyl compounded composition has an obviously increased effect on barnyard grass and crabgrass, has an improved herbicidal effect, expands the herbicidal spectrum, and is suitable for preventing and killing off annual weed in potato field, tomato field and soybean field.

The invention discloses a weeding compound containing 2-methyl-4-chloro-phenoxyacetic acid and oxaziclomefone. The compound comprises the active component of 2-methyl-4-chloro-phenoxyacetic acid or a derivative of 2-methyl-4-chloro-phenoxyacetic acid and oxaziclomefone. The weight ratio of 2-methyl-4-chloro-phenoxyacetic acid to oxaziclomefone ranges from 60:1 to 1:60. The compound can be applied to the crop weeding aspect in the agricultural field. Experiment results show that the weeding compound is obvious in synergism, can reduce the use amount, and reduces prevention cost. The insect-killing compound can effectively remove various kinds of weeds. By combining weeding agents according to different action mechanisms and action modes, the application amount of each single dosage is effectively reduced, and the compound plays an important role in the aspects of widening weeding spectra, delaying insecticide resistance and the like.

The invention provides a synergistic weeding composition which comprises active ingredients pyroxasulfone and metribuzin. The weight ratio of pyroxasulfone to metribuzin is (100:1)-(1:100). The synergistic weeding composition is used for preventing undesired plant growth. The invention further provides a method for preventing undesired plant growth. The active ingredients pyroxasulfone and metribuzin of the synergistic weeding composition are applied jointly or independently undesired plants or growth sites thereof.

The invention discloses a herbicidal composition containing metamifop and oxaziclomefone, and application of the herbicidal composition. The herbicidal composition is prepared by using the metamifop and the oxaziclomefone as main effective components, wherein the mass ratio of the metamifop to the oxaziclomefone is equal to (1 to 50)-(59 to 1). The herbicidal composition provided by the inventioncan be used for weeding in rice fields, and has a remarkable effect especially for preventing and killing gramineae weeds, broadleaf weeds and sedge weeds. Compared with a single agent, the herbicidalcomposition provided by the invention delays the weed resistance, and is wide in weed control spectrum and long in lasting period under the premise of improving the efficacy; furthermore, the herbicidal composition is safe to rice and afterreap crops.

The present subject matter provides a method of controlling or preventing unwanted vegetation in a crop of potatoes. The method includes applying to the locus of the unwanted vegetation a herbicidallyactive combination of diflufenican and metribuzin or an ester or salt of any of the foregoing, or a combination thereof.

The invention discloses a wastewater treatment method in a metribuzin synthesis process. The wastewater treatment method comprises the following steps of (A) adding concentrated sulfuric acid to wastewater, adjusting the pH value to be smaller than 3, stirring for half an hour, adding a sodium hydroxide solution, adjusting the pH value to be 4-5, heating the concentrated sulfuric acid to above 100 DEG C, refluxing for an hour, and carrying out intermittent distillation on filtrate to obtain methanol; and (B) preparing a complexing agent, adding the complexing agent to the residual liquid in the step (A), stirring and extracting for half an hour, clarifying a lower layer of water phase, carrying out standing and separating, further distilling the water phase to obtain methanol, adding an oil phase to sodium hydroxide for neutralizing until the pH value is 6-8, carrying gout heating and evaporating, absorbing the evaporated gas by using the sodium hydroxide solution, separating out sodium bromide crystal after cooling, introducing the residual liquid into a strengthened aerobic biochemical pool for treatment for 40-80 hours, carrying out oxidization treatment through ozone for 20 hours, and treating the wastewater which is subjected to oxidization treatment through the ozone again through the strengthened aerobic biochemical pool for 10 hours, thereby completing the whole treatment process. According to the wastewater treatment method, purification treatment can be carried out on the wastewater; and bromine and methanol in the wastewater can be recycled and the treated wastewater can be directly discharged, so that the environmental pollution is reduced.