CN102258027B - Synergistic weeding composition - Google Patents
Synergistic weeding composition Download PDFInfo
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- CN102258027B CN102258027B CN 201110136705 CN201110136705A CN102258027B CN 102258027 B CN102258027 B CN 102258027B CN 201110136705 CN201110136705 CN 201110136705 CN 201110136705 A CN201110136705 A CN 201110136705A CN 102258027 B CN102258027 B CN 102258027B
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Abstract
The invention relates to a synergistic weeding composition, which contains weeding active ingredients. The combination of the weeding active ingredients is suitable for preventing and controlling weeds in beneficial plant crops such as wheat crops selectively. The invention provides a weeding composition for a wheat test field. The weeding composition can prevent and eliminate broad leaf weeds and gramineae weeds effectively. The synergistic weeding composition is characterized by comprising the following active ingredients of clodinafop-propargyl and pyraflufen-ethyl in a weight ratio ranging from 500:1 to 1:1, wherein the clodinafop-propargyl and the pyraflufen-ethyl account for 1 to 50 percent of the mass of the weeding composition. The formulations of the synergistic weeding composition can be wettable powder, water-dispersible granules, a suspending agent, aqueous emulsion, microcapsules and missible oil.
Description
Technical field
The present invention relates to a kind of Synergistic herbicide compositions, and said composition is containing herbicidal active component, and described herbicidal active component combination is applicable to for example weeds in wheat crop of selectivity control useful plants crop.The invention provides a kind of Herbicidal combinations for experimental field of wheat, can effectively prevent and kill off broad leaved weed and grassy weed.
Background technology
Effectively suppress or prevent and treat the growth of the weeds in crops, be conducive to the volume increase of crops and increase income.Easy, the economical and efficient of Application of Herbicides application at present, become the indispensable part of modern agricultural technology.The use of weed killer herbicide, not only guaranteed agricultural year, stable yields, raises labour productivity and improved working condition, but also promoting the innovation of culture technique, as the development of no-tillage system and film-mulching cultivation method etc.
Alkynes oxalic acid, have another name called clodinafop-propargyl, the fluoro-2-pyridine of the chloro-5-of 2-(4-(3-oxygen base))-phenoxy group-propionic acid alkynes propyl ester.The structural formula of alkynes oxalic acid is:
Alkynes oxalic acid is cauline leaf inorganic agent after efficient, the stable seedling of wheat paddock grassy weed.Be the first-selected product of the hard grass of control, amur foxtail, wild oat, other pernicious grassy weeds (barnyard grass, perennial ryegrass etc.) are also had to good preventive effect.Alkynes oxalic acid belongs to wide spectrum grassy weed foliar herbicide after interior absorption seedling.Its mechanism of action is for suppressing the activity of acetyl-CoA carboxylase in plant corpus, for interior suction conductivity weed killer herbicide, blade and leaf sheath by plant corpus absorb, the phloem conduction, accumulate in the meristematic tissue of plant corpus, suppresses acetyl-CoA carboxylase, fatty acid is synthesized to be stopped, the growth division of cell can not normally be carried out, and film system etc., containing the fat structural deterioration, finally cause plant death.Alkynes oxalic acid is unsatisfactory to preventive effects such as broadleaf weed clearvers, Hairy Bittercress, ion grass, bromegrass.
The spirit of despot's grass, have another name called pyrrole grass ether, the chloro-5-of chemical name 2-(the chloro-5-difluoro-methoxy of 4--1-methylpyrazole-3-yl)-4-fluorophenoxy ethyl acetate.The structural formula of despot's grass spirit is:
The spirit of despot's grass is the phenylpyrazole class herbicide after seedling of tagging property, its mechanism of action is the proporphyrinogen oxidase suppressed in plant corpus, and utilize wheat and weeds to the metabolite of the different activities that difference produces of medicament absorption and deposition, reach the effect of optionally preventing and treating the wheatland weeds.The spirit of despot's grass has good kill activity to broadleaved herbs such as clearvers, deaf nettle, chickweed, Veronica persica, bromegrass.
CN200710156971 discloses a kind of compound herbicide, comprises alkynes oxalic acid and tribenuron-methyl, or alkynes oxalic acid and thifensulfuron methyl, or alkynes oxalic acid and bensulfuron-methyl.For disposable single, double cotyledon weeds of preventing and kill off wheat, soybean, rape.
CN200910184340 discloses the Herbicidal combinations that contains alkynes oxalic acid, and the mixture be comprised of alkynes oxalic acid and bensulfuron-methyl can effectively be prevented and treated standing grain basis, the broad leaved weeds such as grass family, Rubiaceae, composite family, Convolvulaceae.For preventing and kill off annual or perennial weeds.
EP93116635 discloses pyrrole grass ether mixed effect as glyphosate, phosphine oxamate etc. mixed with organophosphorus herbicide.Its objective is that the initial effect of solution organic phosphorus compound is slow, be difficult to effectively remove herbaceous weed in leaf extension phase and regeneration stage.Pyrrole grass ether and being mixed of organic phosphor both can show very soon herbicidal effect after using, and in leaf extension phase and the herbaceous weed in regeneration stage, enough herbicidal effects also being arranged.
CN1069166 discloses pyrrole grass ether and Diflufenican, Brominal, and flurtamone, the mixing of aclonifen and isoproturon, can obtain cereal high performance herbicidal composition selectively.Composition of the present invention, to the weeds in cereal, especially has the weeds of serious cost economic problems that good activity is arranged to those.
The combination of alkynes oxalic acid and the spirit of despot's grass does not also have document and report record.
Summary of the invention
The present invention seeks to provides a kind of Synergistic herbicide compositions for above-mentioned weak point, Synergistic herbicide compositions of the present invention is to contain the fluoro-2-pyridine of the chloro-5-of 2-(4-(3-oxygen base))-phenoxy group-propionic acid alkynes propyl ester (alkynes oxalic acid) and the chloro-5-of 2-(the chloro-5-difluoro-methoxy of 4--1-methylpyrazole-3-yl)-4-fluorophenoxy ethyl acetate (spirit of despot's grass), its objective is for Herbicidal synergic, reduce herbicide resistance, widen the herbicidal spectrum scope.
Alkynes oxalic acid
The spirit of despot's grass
The present invention combination contains the herbicidal effect of above-mentioned active component herbicidal effect when alone apparently higher than each component, and particularly the sphere of action of two kinds of active components has been widened in following two aspects: at first in the situation that while using separately than every kind of composition low of required dosage more there is good synergy.Secondly significantly widened the control of weeds spectrum, increased in addition the selectivity to crop, this is modern chemistry institute desired impact just.The present composition, when keeping preventing and treating weeds of wheat well, also has larger adaptability to succession crop.
The purpose of this invention is to provide the complementation of a kind of herbicide spectrum, the main grassy weed of energy synergy control wheat paddock, broad leaved weed and sedge weed, with cauline leaf inorganic agent after alkynes oxalic acid and the careless clever composite wheatland seedling of despot.Its herbicide spectrum is with strong complementarity, and wider herbicide spectrum is arranged, and can prevent and treat efficiently the main weeds between wheat paddock, has overcome alkynes oxalic acid to the active low defect of broadleaved herb, has met the requirement of wheat paddock weeding " dispenser, full season is without crop smothering ".
A kind of Synergistic herbicide compositions of the present invention is to take following technical scheme to realize:
A kind of Synergistic herbicide compositions of the present invention, contain active component alkynes oxalic acid and the spirit of despot's grass, and wherein the weight ratio of alkynes oxalic acid and the spirit of despot's grass is 500:1-1:1, preferably 200:1-1:1, more preferably 100:1-1:1.
The content of present composition active component depends on dosage when weed killer herbicide is used separately, also depends on mixed ratio and the synergistic effect degree of a kind of weed killer herbicide and another kind of weed killer herbicide.In the described herbicidal composition with synergistic effect, the quality percentage composition that alkynes oxalic acid and the careless spirit of despot account in Herbicidal combinations is 1%-50%, preferably 1%-30%.
The described herbicidal composition with synergistic effect has the characteristics of broad weed-killing spectrum, can effectively prevent and treat weeds important on a large amount of agriculturals, as knotgrass, setaria, Europe sinapsis alba genus, Solanum, barnyard grass, false jowar, Rottboellia exaltata genus, Cyperus, abutilon, chrysanthemum harvest spp, Xanthium, Amaranthus, sweet potato genus, Bedstraw, Viola and Veronica.The present composition is applicable to the conventional application process of using on all agriculturals.The present composition is specially adapted to prevent and treat the weeds in wheat paddock, and non-selective control of weeds.The crop of useful plants will also be understood that to be to comprise obtaining the crop that weed killer herbicide or classes of herbicides is had to tolerance because of conventional breeding or gene engineering method.
Consumption can change on a large scale, and depends on the situation of soil, the type of using (seed dressing; Be applied to and broadcast ditch; No-tillage use etc.), weather conditions when crop, target weeds, dispenser and by other factors of using type, time of application and target crop and determining.Usually, mixture of active principles of the present invention can be used with the consumption of 1-500g mixture of active principles/ha.
The present invention's active component used can unmodified form, the form obtained in synthetic use, but preferably be configured to preparation with auxiliary agent commonly used in the preparation processing technology together with solvent, solid carrier or surfactant in a usual manner.Preferred formulation has wetting powder, water dispersible granules, suspending agent, aqueous emulsion, microcapsule formulations, missible oil.These preparations can contain 1%-50% or more active component by weight.Any given compound optimised quantity depend on be intended to the control weeds or the character of plant.As the character of composition, according to the purpose of expection and situation at that time selection application process as spraying, atomization, dust, soak, spreading or cast.Containing mixture of the present invention and optional one or more solids or composition, goods or the mixture of liquid preparation auxiliary agent, prepared in known manner by preparation, for example by by active component and formulation auxiliary agents as solvent or solid carrier is even mixes and/or grind preparation.Can also add in addition surface active cpd (surfactant) in the preparation process of preparation
Solid carrier commonly used has: bentonite, kaolin, calcined kaolin, corn starch, sugar, silica, talcum powder, diatomite, urea, calcium carbonate, sodium carbonate and sodium bicarbonate, and sodium sulphate.
Solvent commonly used has: Water, DMF, DMSO, 1-METHYLPYRROLIDONE, ethylene glycol, polypropylene glycol, paraffin, aromatic hydrocarbons, aliphatic hydrocarbon, olive oil, castor oil, linseed oil, tung oil, sesame oil, corn oil, peanut oil, cottonseed oil, soybean oil, rapeseed oil and cupu oil, fatty acid ester, ketone is as cyclohexanone, 2-HEPTANONE, isophorone and 4-hydroxy-4-methyl-2-pentanone, and alcohols is as methyl alcohol, cyclohexanol, decyl alcohol and oxolane alcohol.
In the preparation process for preparation, adding suitable surface active cpd is to have good emulsification, dispersion and wetting nonionic, cation and anion surfactant and surfactant mixture thereof.Commonly used has: polyethoxy alcohol; polyethoxy alkylphenol, polyethoxy fatty acid esters of sorbitan, sulfonyl succinic acid dialkyl ester; the alkyl sodium sulfate ester; alkylbenzenesulfonate, organosiloxane, N; N-dialkyl group taurate; lignosulfonates, naphthalenesulfonate formaldehyde condensation compound, polycarboxylate and polyoxyethylene/polyoxypropylene block copolymers.In the preparation processing engineering, the conventional surfactant used also is applicable to prepare Herbicidal mixture of the present invention
Also add accordingly appropriate thickener in order to increase toughness in aqueous liquid preparation, xanthans for example, Magnesiumaluminumsilicate etc.The concentration of thickener generally accounts for the 0.02-2% of preparation total amount.
In preparation of the present invention, can also add the reduction water slurry, the material of aqueous emulsion fusing point, that is can prevent the material (antifreeze) that preparation freezes at low temperatures.The normally water-soluble salt of this class material, be suitable for reducing the water chill point of aqua in the present invention or emulsion, for example sodium chloride, potassium chloride, ammonium chloride, ammonium nitrate, sodium nitrate and their mixture.Water miscible glycol is also suitable, for example ethylene glycol, propane diols, diethylene glycol (DEG), glycerine and their mixture.The working concentration of this salt and glycol in each case, is the 0.5%-10% of complete aqueous compositions weight.
Although commercially available prod is formulated into concentrate, the end user generally can use the preparation of dilution.Composition also can comprise other additives as stabilizing agent for example silicone oil, preservative, viscosity modifier, adhesive, tackifier of vegetable oil or epoxidized vegetable oil (epoxidation cocoa butter, rapeseed oil or soya-bean oil), defoamer for example, also has fertilizer or other active components.
The present invention compared with prior art at least has following obvious advantage and beneficial effect:
1. reduce the consumption of individualized compound, kept good exposure level simultaneously, significantly widened the control of weeds spectrum.
2. increased the selectivity to the useful plants crop, this is just in the situation that avoided excessive use active component required and expectation.During the weeds of the present composition in keeping preventing and treating useful plants well, also succession crop is had to larger adaptability.
3. complex weedicide of the present invention, the optimum period medication, consumption is few, and preventive effect is high, and reduces expenses for prevention and control, alleviates the pollution to environment, is beneficial to the safety of people, animal, beneficial organism and maintaining of the ecological balance, meets the sustainable development requirement.
A kind of Synergistic herbicide compositions of the present invention, select the composite reagent of alkynes oxalic acid and despot grass spirit controlling weeds to be had to the effect of synergy, can prevent and treat the multiple grassy weed of wheatland and broad leaved weed, and to wheat without injury.
Specific embodiments
Embodiment 1 2.5% alkynes oxalic acid+careless clever suspending agent of 0.15% despot
Alkynes oxalic acid 2.5%
Despot's grass spirit 0.15%
Fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium 10%
Modified sodium lignosulfonate 5%
Xanthans 0.2%
Propane diols 5%
Defoamer 0.5%
Water complements to 100%
Above-mentioned each component (except xanthans) is mixed in proportion, by the sand mill sand milling to particle diameter in certain limit, then xanthans is mixed with to 1% the aqueous solution, join in proportion in above-mentioned solution the suspending agent stirred.
Embodiment 2 10% alkynes oxalic acid+careless Lingshui Spring emulsion of 0.1% despot
oil phase:
Alkynes oxalic acid 10%
Despot's grass spirit 0.1%
Methyl oleate 36%
Polystyrene 3.5%
water:
Xanthans 0.07%
Naphthalene sulfonate salt 1%
Bactericide 0.2%
Water complements to 100%
Alkynes oxalic acid and the careless spirit of despot are dissolved in methyl oleate, add polystyrene to obtain oil phase; Mix and obtain water according to the component in formula; Under agitation add water to obtain aqueous emulsion oil phase.
Embodiment 3 20% alkynes oxalic acid+careless clever wetting powder of 0.1% despot
Alkynes oxalic acid 20%
Despot's grass spirit 0.1%
Lauryl sodium sulfate 10%
Sodium lignin sulfonate 5%
White carbon 10%
Corn starch complements to 100%
Said components is mixed in proportion, and grinding, air-flow crushing, be prepared into wetting powder.
Granule is extruded in embodiment 4 25% alkynes oxalic acid+careless spirit of 0.05% despot
Alkynes oxalic acid 25%
Despot's grass spirit 0.05%
Solid defoamer 1%
Morwet D425 4%
Carboxy-propyl cellulose 2%
Citric acid 0.5%
Calcined kaolin complements to 100%
Alkynes oxalic acid and the spirit of despot's grass are mixed and air-flow crushing to the mixture water-wet after pulverizing with each auxiliary agent.By this mixture extruder grain again, then dry in air stream.
Embodiment 5 1% alkynes oxalic acid+careless clever colloidal suspending agent of 1% despot
Alkynes oxalic acid 1%
Despot's grass spirit 1%
Ethylene glycol 5%
Nonyl phenol polyglycol ether 2%
Sodium lignin sulfonate 4%
CMC 1%
37% formalin 0.2%
Silica gel emulsion 0.8%
Water complements to 100%
The active component of fine grinding is closely mixed with auxiliary agent, obtain colloidal suspending agent.Water, this colloidal suspending agent dilution, can prepare the suspending agent that needs concentration.
Embodiment 6 28.5% alkynes oxalic acid+careless missible oil of 1.5% despot
Alkynes oxalic acid 28.5%
Despot's grass spirit 1.5%
1-METHYLPYRROLIDONE 10%
Ethoxylated nonylphenol 6%
Calcium dodecyl benzene sulfonate 4%
Solvesso100 complements to 100%
Former medicine after complete solvent, is added to surfactant in solvent, and through stirring and obtaining missible oil.
Embodiment 7 2.5% alkynes oxalic acid+careless clever suspending agent of 0.5% despot
Alkynes oxalic acid 2.5%
Despot's grass spirit 0.5%
Fatty alcohol-polyoxyethylene ether sulfosuccinic acid monoesters disodium 10%
Modified sodium lignosulfonate 5%
Xanthans 0.2%
Propane diols 5%
Defoamer 0.5%
Water complements to 100%
Above-mentioned each component (except xanthans) is mixed in proportion, by the sand mill sand milling to particle diameter in certain limit, then xanthans is mixed with to 1% the aqueous solution, join in proportion in above-mentioned solution the suspending agent stirred.
Granule is extruded in embodiment 8 49.5% alkynes oxalic acid+careless spirit of 0.5% despot
Alkynes oxalic acid 49.5%
Despot's grass spirit 0.5%
Sodium lignin sulfonate 4%
Carboxymethyl cellulose 2%
Kaolin complements to 100%
Active component is mixed with auxiliary agent and ground, the mixture water-wet.This mixture is extruded, then dry in air stream.
Embodiment 9 0.5% alkynes oxalic acid+careless clever wetting powder of 0.5% despot
Alkynes oxalic acid 0.5%
Despot's grass spirit 0.5%
Sodium lignin sulfonate 4%
NaLS 2%
The silicic acid 1% of high degree of dispersion
Kaolin complements to 100%
Said components is mixed in proportion, and grind, pulverize, be prepared into wetting powder.
the field examination
Field trial is carried out at experimental field, Jiangsu dragon lantern chemistry Kunshan winter wheat field.Community area 20m
2, repeating for three times, Sampling Area is 1 m
2 .unifacial leaf and broadleaf weed strain number in the investigation sample prescription, then, by the consumption spraying of experimental scheme, sprayed by the dosage of experimental scheme, uses the air pressure type sprayer even spraying.The growing state of observation post administration weeds, record the preventive effect of herbicide treatment to weeds.Two weeks and surrounding after dispenser, strain preventive effect and the fresh weight preventive effect of each processing of investigation to weeds respectively.Reagent agent is the careless clever SC(of different content in the embodiment of the present invention and proportioning medicament and 2% despot Nihon Nihyaku Co., Ltd), 15% alkynes oxalic acid wetting powder (first just reaching).
Strain (fresh weight) preventive effect (%)=[check plot weeds strain number (fresh weight)-treatment region weeds strain number (fresh weight)]/[check plot weeds strain number (fresh weight)] * 100
Table 1 is used two weeks preventive effects to weeds of wheat after Herbicidal combinations medicine of the present invention
Field test results shows, the careless spirit of alkynes oxalic acid and despot is composite has synergistic effect in the ratio range of 500:1-1:1, average preventive effect is all more than 93%, the preventive effect of alkynes oxalic acid and the careless clever single dose of despot only has respectively 47.4% and 54% to be far longer than alkynes oxalic acid and the preventive effect of seizing by force each single dose of grass spirit, and synergistic effect is obvious.Reduce the consumption of individualized compound simultaneously, kept good exposure level.
Table 2 is used the preventive effect of surrounding to weeds of wheat after Herbicidal combinations medicament of the present invention
Conclusion: as can be seen from Table 2, the dispenser surrounding, all reach more than 90% according to the preventive effect of compound drug of the present invention, and the preventive effect of alkynes oxalic acid and the careless clever single dose of despot only has respectively 32.5% and 44.5%.The lasting effect of compound drug strengthens.
Claims (6)
1. a Synergistic herbicide compositions, is characterized in that active component is alkynes oxalic acid and the spirit of despot's grass, and wherein the weight ratio of alkynes oxalic acid and the spirit of despot's grass is 100:1-1:1.
2. a kind of Synergistic herbicide compositions according to claim 1, is characterized in that in described Synergistic herbicide compositions, and the quality percentage composition that alkynes oxalic acid and the careless spirit of despot account in Herbicidal combinations is 1%-50%.
3. a kind of Synergistic herbicide compositions according to claim 1, is characterized in that in described Synergistic herbicide compositions, and the quality percentage composition that alkynes oxalic acid and the careless spirit of despot account in Herbicidal combinations is 1%-30%.
4. a kind of Synergistic herbicide compositions according to claim 1, the formulation that it is characterized in that described Synergistic herbicide compositions is wetting powder, water dispersible granules, suspending agent, aqueous emulsion, microcapsule formulations, missible oil.
5. a kind of Synergistic herbicide compositions claimed in claim 1 is for preventing and kill off broad leaved weed and grassy weed.
6. a kind of Synergistic herbicide compositions claimed in claim 1 is used for the weeds of preventing and kill off wheat paddock.
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| CN102428925B (en) * | 2011-11-24 | 2014-06-18 | 陕西美邦农药有限公司 | Herbicide compound containing pyraflufen-ethyl and clodinafop-propargyl |
| CN102450254A (en) * | 2011-12-31 | 2012-05-16 | 安徽美兰农业发展股份有限公司 | Clodinafop-propargyl emulsion in water and preparation method thereof |
| CN105519534A (en) * | 2014-09-28 | 2016-04-27 | 南京华洲药业有限公司 | Herbicidal composition comprising clodinafop-propargyl and pyraflufen-ethyl, and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332608A (en) * | 1998-11-10 | 2002-01-23 | 辛根塔参与股份公司 | Herbicidal composition |
| CN101102671A (en) * | 2004-12-17 | 2008-01-09 | 株式会社Lg生命科学 | Synergistic herbicidal compositions |
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| ITMI20060394A1 (en) * | 2006-03-06 | 2007-09-07 | Isagro Ricerca Srl | NEW SYNERGIC HERBICIDE COMPOSITIONS |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332608A (en) * | 1998-11-10 | 2002-01-23 | 辛根塔参与股份公司 | Herbicidal composition |
| CN101102671A (en) * | 2004-12-17 | 2008-01-09 | 株式会社Lg生命科学 | Synergistic herbicidal compositions |
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