335 results about "Pendimethalin" patented technology

The invention discloses a herbicide composition containing topramezone, belonging to the technical field of pesticides. The herbicide composition comprises a raw medicine prepared by compounding topramezone and a herbicide B, wherein the ratio of the topramezone to the herbicide B is (1-80):(1-80); and the herbicide B is any one of the following herbicides: fenoxaprop, fenoxaprop-p, isoproturon, diclofop-methyl, chlortoluron, methabenzthiazuron, imazamethabenz, tralkoxydim, difenzoquat, flampro, flampro M, pendimethalin, primisulfuron and the like. The herbicide composition disclosed by the invention is prepared by compounding topramezone and any one of the herbicide B; and the composition has the advantages of long duration, wide herbicide controlling spectrum and obvious weed control synergism, and overcomes the shortcomings of high cost and short duration by using topramezone only in the prior art.

The invention discloses herbicide containing glufosinate. The herbicide containing glufosinate is characterized by comprising technical material composed of glufosinate and herbicide B according to a proportion of 1-80:1-80. The herbicide B is one of fenoxaprop-ethyl, fenoxaprop-P-ethyl, isoproturon, diclofop-methyl, chlortoluron, methabenzthiazuron, imazamethabenz, tralkoxydim, difenzoquat, flampro, flamprop-M, pendimethalin, nicosulfuron, primisulfuron and the like. The herbicide containing glufosinate is composed of herbicide A and the herbicide B and has the advantages that the herbicide is capable of killing ground weeds and grass seeds which are about to germinate and is long in effect duration; herbicide controlling spectrum is wide, and the herbicide is widely applicable to controlling weeds in dry lands; the herbicide is low in toxicity, weak in sensitization and low in poisoness to crops and human, can control weeds safely without harming the crops, and is evident in weed control synergy.

The present invention provides a comprehensive herbicide for paddy fields, which includes component A and component B, wherein component A is mesotrione, and one or more of component A and component B Item compound, used for weeding in the field; component B is alachlor, metolachlor, propachlor, acetochlor, pretilachlor, butachlor, mefenacet, quinclorac , Cyhalofop-methyl, pendimethalin, saponin, bispyribac, saflufenacil, cyclopyrafen, pyrifluben. After the above scheme is adopted in the present invention, the composition of component A and component B has a synergistic effect, and has a good control effect on both grass weeds in paddy fields and broad-leaved and sedge weeds , and the residual effect period is short, does not affect the growth of the next crop, and is friendly to the environment.

The invention discloses a treatment process of waste water polluted by the pesticide of Dursban, and the process includes the procedures of acid eduction, complexation and extraction, Fenton oxidation and catalytic oxidation. The invention is characterized in that Dursban waste water and herbicide Pendimethalin waste water are comprehensively treated, thereby achieving the proposal of waste controlled by the waste, decreasing the load of organic pollutant being hard to be graded in the waste water, improving the biological degradability of the waste water, removing the pollutant from the waste water, and increasing the biochemical performance of the waste water. Besides, the invention has the advantages of safe and advanced technique, clean operation and low waste water treatment cost.

Herbicidal compositions are disclosed comprising an effective amount of flufenacet, pendimethalin and diflufenican. 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 relates to pesticide, which in detail is a mixed herbicide with Pdibutalin, Pendimethalin and Imazethapyr. It is characterized in that it takes effective component of Pdibutalin, Pendimethalin and Imazethapyr to prepare mixed herbicide, adds proper amount of carrying agent or adjuvant to produce powder agent, wettable powder, water suspending agent, suspoemulsion microcapsules, missible oil, particle, soluble granule, dispersing granule and etc. The advantages of said herbicide are that it solves problem of no herbicide for dry rice field and enlarges weed removing range, it can control forage grass, perennial broadleaf weed and cyperus weed in the dry rice field, the herbicide consumption is dramatically reduced, and it is safe for crops in the field and the second stubble crops.

The invention belongs to the field of pesticide weedicide and in particular relates to a weeding composition for cotton crops. The weeding composition contains active ingredients, namely pendimethalin or trifluralin and oxadiazon. The weight ratio of the pendimethalin to the oxadiazon is 100:1 to 1:100. The mass percentage content of the pendimethalin and the oxadiazon in the composition is 5-80%, preferably 10-60%. The mass percentage content of the trifluralin and the oxadiazon in the composition is 5-80%, preferably 10-60%. The dosage form of the composition can be water dispersible granules, missible oil, wettable powder, suspending agents, coating granules, extrusion granules, microcapsules, suspending agents and emulsion in water. The weeding composition is used for preventing and curing weeds in useful crops, weeds in cotton fields and nightshades, glaucum, cockspur grass, acalypha australis and Tong hemp weeds in the cotton fields.

The invention relates to a pendimethalin micro-capsule suspending agent and a preparation method thereof. The pendimethalin is taken as the micro-capsule core of the pendimethalin micro-capsule suspending agent and the content thereof is 10-450g/L; polyuria or polyurethane is taken as a micro-capsule wall of the pendimethalin micro-capsule suspending agent and the content thereof is 20-100g/L; the pendimethalin micro-capsule suspending agent also contains 20-100g/L emulsifier, 20-60g/L dispersing agent, 30-100g/L antifreezing agent, 1-10g/L viscosity modifier and 2-15g/L antifoaming agents and the balance of water. The pendimethalin micro-capsule suspending agent can solve the problem that the liquid preparation is easy to color and pollute the drug applying equipment; the agent does not contain the solvent and is environment-friendly; the compound of dispersing agent and emulsifier adopted by the invention can solve the problem of system creaming caused by coarse crystal easily generated by the low melting point compound following the temperature fluctuation; according to the preparation method provided by the invention, the temperature control is adopted, the operation is performed under normal pressure, no catalyst is used, the process is simple, no special equipment is required and the cost is low.

The invention relates to a uniconazole and pendimethalin bud inhibiting agent comprising uniconazole, pendimethalin, a solvent and an emulsifier, wherein the proportional range of the uniconazole and the pendimethalin is 1:10-15, the optimal proportion is 1:14, the solvent and the emulsifier are added as missible oil. The uniconazole and pendimethalin bud inhibiting agent is used for inhibiting the growth of tobaccolateral buds and has high efficiency, low toxicity, low cost and no environmental pollution.

The invention discloses a gibberellic acid-containing herbicide composition and a preparation method as well as application thereof. The gibberellic acid-containing herbicide composition is prepared from the following components in parts by weight: 0.01 to 99 parts of gibberellic acid and 1 to 90 parts of herbicide; the herbicide is one or a mixture of at least two of cyhalofop-butyl, penoxsulam, metamifop, bispyribac-sodium, quinclorac, anilofos, pretilachlor, butachlor, mefenacet, bensulfuron methyl, pyrazosulfuron-ethyl, pyriminobac-methyl, bentazone, mesotrione, halosulfuron-methyl, metolachlor, pendimethalin, oxadiazon, oxadiargyl, MCPa, fluroxypyr and diflufenican. The gibberellic acid-containing herbicide composition has synergism to weed prevention and control, the weed control efficiency is improved, the safety of the herbicide to crops can be improved, the herbicide phytotoxicity problem in agricultural production is fundamentally solved, and meanwhile the crop yield is improved by adjusting crop growth.

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.

Herbicidal compositions are disclosed, comprising an effective amount of flufenacet, pendimethalin 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 relates to a weeding composition, relating to the technical field of plant protection compositions, which can be used for resisting harmful plants, such as harmful plants in crop plants, and contains compositions of pendimethalin or trifluralin and penoxsulam as active ingredients. The weeding composition is characterized by containing the active ingredients, namely pendimethalin or trifluralin and penoxsulam. The weight ratio of the pendimethalin to the penoxsulam is 100:1 to 1:100. The weight ratio of the trifluralin to the penoxsulam is 100:1 to 1:100. The mass percentage content of the pendimethalin and the penoxsulam in the composition is 2-80%, preferably 5-60%. The mass percentage content of the trifluralin and the penoxsulam in the composition is 2-80%, preferably 5-60%. The weeding composition is used for preventing and curing weeds in useful crops and weeds in cotton fields.

The invention discloses a strain for degrading a pendimethalin pesticide and a fungicide and an application of the strain. The strain is Providencia rettgeri JZB42C003 which is preserved at CGMCC on 17th, November, 2014, wherein the preservation number is CGMCC No. 9977. The JZB42C003 strain is good in degrading effect on pendimethalin or beta-cypermethrin left in soil, fruits, vegetables or water bodies, and the degradation rate on 50mg/L pendimethalin in a basic inorganic salt culture solution treated by the JZB42C003 strain in 5 days can reach 68.5%, and the degradation rate on 50mg/L beta-cypermethrin in the basic inorganic salt culture solution treated by the JZB42C003 strain in 5 days can reach 55.7%.

The invention relates to a pendimethalin micro-capsule suspending agent and a preparation method thereof. The pendimethalin micro-capsule suspending agent consists of pendimethalin, a capsule core solvent, a capsule wall material, a dispersant, a protective agent, an aqueous monomer and water; the pendimethalin is used as the capsule core and is covered with macromoleclar polymer to form a sustained-release and release-controlling preparation which can meet the basic prevention requirements of different target preparations; the preparation is low in toxicity and can be used for reducing the toxicity for beneficial organisms such as bees and silkworms; as the urea and formaldehyde are cheap and the microencapsulation process is simple and easy to control, the cost of the preparation is low and the market competitiveness of the preparation is strong; and water is used as a dispersing medium and dosage of an organic solvent is low, so that the preparation is safe in storage and use, and the environmental pollution is reduced. The pendimethalin micro-capsule suspending agent is dinitrotoluidine weedicide and is widely applied to weeding in fields of crops such as corn, soybean, peanut, cotton, directly sowing dry rice, potato, tobacco and vegetable.

The invention relates to a synergistic herbicide composition and an application method thereof and in particular relates to a synergistic herbicide composition which is prepared through ternary combination of pendimethalin, oxyfluorfen and oxadiazon and is applied to corn fields. The synergistic herbicide composition comprises active ingredients including (a) N-(1-ethylpropyl)-2,6-binitro-3,4-dimethylaniline, (b) 2-chloro-4-trifluoromethylphenyl-3'-ethoxy-4'-nitrophenyl ether and (c) 5-tert-butyl-3-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-dioxazoline-2-ketone, wherein the weight ratio of (a) to (b) to (c) is (1-50):(1-50):(1-50). The synergistic herbicide composition has a beneficial effect on controlling weeds in the peanut fields, effectively controls annual grassy and broadleaf weeds in the peanut fields, effectively controls generation of weeds with resistance, and simultaneously can reduce the overall use cost and expand the weed control spectrum.

The invention provides a herbicide prepared by binary combination of oxyfluorfen and pendimethalin and preparation method thereof. The herbicide consists of the following components in percentage by mass: 3 to 10 percent of oxyfluorfen, 10 to 30 percent of pendimethalin, 5 to 15 percent of synergist, 8 to 20 percent of emulsifier and the balance of solvent. The preparation method comprises the following steps of: mixing the oxyfluorfen and the solvent in the mass ratio and stirring the mixture; mixing the pendimethalin and the solvent and stirring the mixture; mixing the obtained solution; adding the emulsifier, the synergist and the obtained mixture in a reaction kettle, and stirring the mixture in the reaction kettle for 10 to 15 minutes; adding the remained solvent into the mixture, and stirring the mixture for 20 to 30 minutes; and performing standing, filtering, filling and sampling analysis to obtain the finished product. The herbicide is a high-efficiency contact type broad-spectrum herbicide; when the herbicide is used for controlling annual gramineae and cyperaceae monocotylous and dicotyledons weed,, such as soy beans, wheat, potatoes, cotton, tobacco, vegetables and melon-fruit plants, in tea gardens and orchards, the effect is produced in 2 to 3 hours, and the weed is died in 3 to 5 days, and after one time of pesticide application, the harmful weed can be removed in the whole growing periods of plants. The dosage of the herbicide is 25 to 35 grams per mu, and the application cost of the herbicide is 57 to 43 percent lower than the sole application cost of the oxyfluorfen or the pendimethalin.

The invention belongs to the field of agricultural herbicide, and in particular relates to a composite herbicide. The composite herbicide contains diflufenican and pendimethalin which serve as active ingredients and have a weight ratio of (10:1)-(1:20). The composite herbicide has the advantages that: 1, the synergistic effect is obvious, and the pesticide effect is greatly improved; 2, the pesticide effect is improved, the field consumption of the active ingredients is reduced, the production and use costs are reduced, and pesticide residue and environmental pollution are reduced; and 3, the composite herbicide consists of the active ingredients with different action mechanisms, the action sites are increased, pesticide resistance of weeds are overcome and delayed, and the composite herbicide is an important means for comprehensively preventing and controlling field weeds.

The invention discloses a method for removing nitrosamine from dinitroaniline herbicides. The method comprises the steps of: adding a solvent, haloid acid and a remover methylsulfonic acid in the production synthesis process of raw dinitroaniline herbicide or a raw dinitroaniline herbicide product, and carrying out nitrous removal reaction to convert byproduct nitrosamine into a target product, such as trifluralin, pendimethalin, Amex820, oryzalin, dinitramine, isopropalin, bulab-37 and fluchloralin, so that the nitrosamine content is not more than 1.0ppm and achieves the export standard.

The invention relates to a chemical herbicide for crops. The chemical herbicide comprises effective components including oxadiazon and pendimethalin, wherein the weight ratio of the oxadiazon to the pendimethalin is 25 to 30. The chemical herbicide has an obvious synergistic effect and the pesticide effect is improved greatly; the pesticide effect is improved and the use amount of effective components in a field is reduced; the production cost and the use cost are reduced and herbicide residues are reduced and environmental pollution is alleviated; the compound herbicide is composed of effective components of different function mechanisms and the number of the acting sites is increased, so that the generation of the drug resistance of weeds is overcome and delayed; the chemical herbicide for the crops is an important manner for comprehensively preventing the weeds in the field.

The present invention provides a continuous process for the preparation of a stable aqueous suspension concentrate composition of pendimethalin, alone or in combination with another pesticide, which comprises mixing a molten stream of pendimethalin with a cold aqueous stream containing coformulants plus seed crystals of orange pendimethalin.

The invention provides a method for preparing pendimethalin. The method mainly comprises the following steps of: performing an amination on interhalogen o-xylene and 3-amylamine, which serve as initiative raw materials, in the presence of a catalyst and then performing a nitration reaction to prepare the pendimethalin. Compared with the prior art, the method has a short reaction process route; the pendimethalin yield is over 70 percent; the problem of nitration selectivity of o-xylene in the prior art is avoided; and the price of an adopted catalytic system is low.

The invention discloses a method for purifying pendimethalin, which comprises the following steps of: adding coarse product of pendimethalin, thiocyanate and hydrochloric acid into a reaction container according to a mass ratio of 7-10:1:3-5; performing reflux reaction at the temperature of between 75 and 81 DEG C for 6 to 15 hours under normal pressure, adding the thiocyanate again in the reaction process for continuous reaction until the content of N-nitrosamine compound is less than 10ppm, and taking an oil layer after the reaction is finished; and washing the oil layer with water, alkali and water in turn and controlling the temperature to between 60 and 90 DEG C under the vacuum condition for removing a solvent so as to obtain the pendimethalin. The method for purifying the pendimethalin has the advantages that: due to the existence of the aid thiocyanate, the speed of the reaction for removing the N-nitrosamine compound is high, and the content of the N-nitrosamine compound is less than 20ppm; because the reaction temperature is controlled at the reflux temperature, the method does not need to be operated under the pressure condition, and can reduce the operating difficulty and equipment requirement and improve the operating safety.