CN104222095A - Weeding composition containing dimethenamid and pyribenzoxim - Google Patents
Weeding composition containing dimethenamid and pyribenzoxim Download PDFInfo
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- CN104222095A CN104222095A CN201410505537.3A CN201410505537A CN104222095A CN 104222095 A CN104222095 A CN 104222095A CN 201410505537 A CN201410505537 A CN 201410505537A CN 104222095 A CN104222095 A CN 104222095A
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- pyribenzoxim
- dimethenamid
- herbicidal combinations
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Abstract
The invention discloses a weeding composition containing dimethenamid and pyribenzoxim, belongs to the field of herbicides, and aims to solve the problems that pests can easily generate resistance and the safety is low by the use of an existing single component herbicide. Dimethenamid and pyribenzoxim serve as effective components; the weight ratio of dimethenamid to pyribenzoxim is (35:1)-(1:25). The two effective components in the weeding composition have a coordinative synergism effect; the use amount of pesticide can be effectively reduced, the drug use cost is lowered, and the pollution to the environment is reduced; the generation of dug resistance to weeds can be delayed, and the drug action lasts for long time; the weeding composition is safe to crops, human, livestock and environment.
Description
Technical field
The present invention relates to weed killer herbicide field, specifically, relate to a kind of Herbicidal combinations containing dimethenamid and pyribenzoxim.
Background technology
Dimethenamid, chloroacetamide-based compounds, be mainly used in the crops such as corn, soybean, peanut or beet, prevent and kill off multiple annual standing grain herbaceous weed if barnyard grass, lady's-grass, Cowhells etc. and broad leaved weed are as Amaranthus retroflexus, beggar-ticks, shepherd's purse, Monochoria vaginalis, pineapple weed etc., to crop safety.
Pyribenzoxim, oxime ester compound, wide spectrum selective post-emergence herbicide, acetolactate synthestase (ALS) inhibitor.To paddy rice, common wheat, Korea lawn grass, there is activity of weeding after selectivity super-high-efficient bud, without activity of weeding before bud, for preventing and kill off the various grassy weed such as barnyard grass, large fringe amur foxtail, polygonum flaccidum and the assorted effect of drawing of broad-leaved is distinguished, to paddy rice, common wheat safety.
Often there is defect in various degree in the weed killer herbicide kind containing single-activity component, as after continuous administration, weeds easily develop immunity to drugs, herbicide spectrum is narrow in farm weeding control, and application times is many can weighting ring environment pollution.The weeds of resistance are agriculturally produced for control, a kind of way be release new for the new component of existing kind without cross resistance.But the development cost of new active ingredient is high, and the construction cycle is long, and forever all do not catch up with the speed that weeds produce resistance.Other way such as crop structure adjustment, different agricultural chemicals rotations etc., in the process of practical operation, be difficult to really play obvious effect.Different cultivars composition carries out composite, is the modal method of control resistant weed.
Summary of the invention
For solving the problem, the invention provides a kind of Herbicidal combinations containing dimethenamid and pyribenzoxim that can slow down drug resistance generation, there is synergistic effect.
The Herbicidal combinations containing dimethenamid and pyribenzoxim of the present invention, active ingredient is dimethenamid and pyribenzoxim, and the weight ratio of dimethenamid and pyribenzoxim is 35:1 ~ 1:25.
Preferably, the weight ratio of described active ingredient dimethenamid and pyribenzoxim is 2 ~ 10:1, the thing 8 ~ 10:1 be more preferably.
Further, described active ingredient dimethenamid and pyribenzoxim account for 1% ~ 90% in described Herbicidal combinations.
Further, also carrier and auxiliary agent is contained in described Herbicidal combinations.Described carrier is one or more in water, solvent or filler.
Described solvent is selected from the mixture of one or more compositions in DMF, cyclohexanone, toluene, dimethylbenzene, dimethyl sulfoxide (DMSO), methyl alcohol, ethanol, trimethylcyclohexanone, NOP, 1-METHYLPYRROLIDONE, propyl alcohol, butanols, ethylene glycol, diethylene glycol, ethylene glycol monomethyl ether, butyl ether, vegetable oil (as soybean oil, corn oil, rapeseed oil, turpentine oil, cottonseed wet goods), mineral oil, ethyl acetate or acetonitrile etc.
Described filler is selected from the mixture of one or more compositions in kaolin, diatomite, bentonite, attapulgite, white carbon, starch or precipitated calcium carbonate.
Further, described auxiliary agent at least comprises a kind of surfactant, can also add other conven-tional adjuvants as required.Described auxiliary agent can be emulsifier, dispersant, wetting agent, bleeding agent, antifreezing agent, thickener, stabilizing agent, disintegrant or defoamer.
Surfactant can be nonionic or anionic, also can be two type compound uses.
Described emulsifier is selected from OP series phosphate (thermally coupled distillation columns), 600# phosphate (phenyl phenol polyoxyethylene ether phosphate), styrene polyoxyethylene ether ammonium sulfate salt, alkyl biphenyl ether disulfonic acid magnesium salts, triethanolamine salt, agriculture breast 400# (benzyl dimethyl phenol polyoxyethyl ether), Nongru-700 # (alkylphenol-formaldehyde resin polyoxyethyl ether), peaceful newborn 36# (phenethyl fluosite polyoxyethyl ether), agriculture breast 1600# (phenethyl phenol polyoxyethanyl polypropylene-base ether), ethylene oxide-propylene oxide block copolymer, OP series (polyoxyethylene nonylphenol ether), BY series (castor oil polyoxyethylene ether), agriculture breast 33# (alkylaryl polyoxyethylene poly-oxygen propylene aether), Span series (sorbitol anhydride monostearate), mixtures of one or more compositions in TWEEN Series (anhydrous sorbitol fat acid ester polyoxyethylene ether) or AEO series (fatty alcohol-polyoxyethylene ether).
Described dispersant is selected from the mixture of one or more compositions in polycarboxylate, lignosulfonates, alkylphenol polyoxyethylene formaldehyde condensation products sulphate, alkyl benzene calcium sulfonate, naphthalene sulfonic acid-formaldehyde condensation product sodium salt, alkylphenol polyoxyethylene, aliphatic amine polyoxyethylene ether, aliphatic acid polyethenoxy ether or fatty acid glyceride APEO.
Described wetting agent is selected from the mixture of one or more compositions in lauryl sodium sulfate, neopelex, Nekal BX, wetting and penetrating agent F, spaonin powder, silkworm excrement or soapberry powder.
Described bleeding agent is selected from the mixture of one or more compositions in penetrating agent JFC (fatty alcohol-polyoxyethylene ether), penetrant t (Maleic Acid Diisooctyl sulfonate), azone, organosilicon.
Described thickener is selected from the mixture of one or more compositions in gelatin, sodium carboxymethylcellulose, hydroxyethylcellulose, Sodium Polyacrylate, modified starch, xanthans, bentonite, silica and Magnesiumaluminumsilicate.
Described antifreezing agent is selected from the mixture of one or more compositions in ethylene glycol, propane diols, glycerine or urea.
Described defoamer is selected from the mixture of one or more compositions in silicone oil, silicone compound, C10 ~ C20 saturated fat acid compounds or C8 ~ C10 aliphatic alcohols compound.
Described disintegrant is selected from the mixture of one or more compositions in bentonite, urea, ammonium sulfate, aluminium chloride, low-substituted hydroxypropyl cellulose, lactose, citric acid, succinic acid or sodium bicarbonate.
Described stabilizing agent is selected from epoxidized soybean oil, epoxychloropropane, BHT, ethyl acetate, the mixture of one or more compositions of triphenyl phosphate.
Material described above is all well known to a person skilled in the art material, buys by market.
The formulation of described Herbicidal combinations is missible oil, suspension emulsion, wetting powder, water dispersible granules, aqueous emulsion or microemulsion.
Compared with prior art, the invention has the beneficial effects as follows: in Herbicidal combinations, two kinds of active ingredients have coordination synergistic effect, effectively can reduce the usage amount of agricultural chemicals, reduce drug cost, reduce the pollution to environment; Can delay the generation of herbicide resistance, the drug action time is long; To crop safety, safe for human and animal and environment.
Embodiment
Below in conjunction with embodiment, the present invention is further explained.
Embodiment 1
Contain a Herbicidal combinations for dimethenamid and pyribenzoxim, be missible oil, be made up of the component of following weight percentage: dimethenamid, 58%; Pyribenzoxim, 7%; Agriculture breast 500# and agriculture breast 601# selected by emulsifier, and consumption is respectively 4% and 6%; Dimethylbenzene, surplus.
Preparation method: active ingredient dimethenamid and pyribenzoxim weed killer herbicide are added in carrier by formula rate, and add surfactant and other functional aid wherein, is uniformly mixed being uniformly mixed in still.Be uniformly mixed still and can select enamel reaction still, stainless steel stirred tank etc.
Embodiment 2
Contain a Herbicidal combinations for dimethenamid and pyribenzoxim, be suspension emulsion, be made up of the component of following weight percentage: dimethenamid, 40%; Pyribenzoxim, 20%; Emulsifier agriculture breast OP-10,2%; Dispersant polycarboxylate, 7%; Xanthans selected by thickener, and consumption is respectively 0.1%; Antifreeze glycol, 5%; Defoamer silicone compound, 0.5%; Water, surplus.
Preparation method: by formula rate, is first placed in reactor by active ingredient pyribenzoxim weed killer herbicide, adds water and mix, obtain dense suspension by grinding technics; Again dimethenamid, surfactant and other functional aid are added reactor, mix by high speed shear, through modulating the suspension emulsion of final system.Capital equipment is batching kettle, colloid mill or homogeneous mixer, sand mill.
Embodiment 3
Contain a Herbicidal combinations for dimethenamid and pyribenzoxim, be wetting powder, be made up of the component of following weight percentage: dimethenamid, 30%; Pyribenzoxim, 20%; Wetting agent lauryl sodium sulfate, 4%; Dispersant calcium lignosulfonate, 7%; Filler white carbon, 10%, filler kaolin, surplus.
Preparation method: by formula rate, adds active ingredient dimethenamid and pyribenzoxim weed killer herbicide in carrier, and adds surfactant and other functional aid wherein, mixing, and after air-flow crushing, mixing obtains wetting powder again.Capital equipment has mixer, airslide disintegrating mill.
Embodiment 4
Contain a Herbicidal combinations for dimethenamid and pyribenzoxim, be water dispersible granules, be made up of the component of following weight percentage: dimethenamid, 45%; Pyribenzoxim, 5%; Wetting agent dodecylbenzene sodium sulfonate, 4%; Dispersant alkylnaphthalene sulfonate formaldehyde condensation products, 8%; Filler attapulgite, surplus.
Preparation method: by formula rate, active ingredient dimethenamid and pyribenzoxim weed killer herbicide are added in carrier, and add surfactant and other functional aid wherein, mixing, after air-flow crushing, add the water of 10 ~ 25%, then obtain water dispersible granules product through kneading, granulation, drying, screening; Maybe the powder pulverized is sprayed water in boiling granulator, granulation, drying, the afterwards obtained product of screening.Capital equipment has mixer, airslide disintegrating mill, kneader, Squeezinggranulator, drying room or fluid-bed drying, or boiling granulator, screening machine.
Embodiment 5
Contain a Herbicidal combinations for dimethenamid and pyribenzoxim, be aqueous emulsion, be made up of the component of following weight percentage: dimethenamid, 40%; Pyribenzoxim, 5%; 601PT and agriculture breast BY-125 selected by emulsifier, and consumption is respectively 2% and 6%; Dimethylbenzene, 10%; Ethylene glycol selected by antifreeze, and 5%; Water, surplus.
Preparation method: active ingredient dimethenamid and the agent of pyribenzoxim weed killer herbicide are added in carrier by formula rate, and add surfactant wherein and make it be dissolved into homogeneous oil phase, other functional aid and water are mixed into homogeneous aqueous phase.Under high-speed shearing machine stirs, aqueous phase is joined in oil phase, finely disseminated aqueous emulsion can be formed.
Embodiment 6
Contain a Herbicidal combinations for dimethenamid and pyribenzoxim, be microemulsion, be made up of the component of following weight percentage: dimethenamid, 40%; Pyribenzoxim, 10%; KT and agriculture breast 601# selected by emulsifier, and consumption is respectively 6% and 8%; Dimethylbenzene, 15%; Water, surplus.
Preparation method: active ingredient dimethenamid and pyribenzoxim weed killer herbicide are added in carrier by formula rate, and add surfactant wherein, make it be homogeneous oil phase being uniformly mixed in still to stir, then add water and stir transparent state under slowly stirring.Be uniformly mixed still and can select enamel reaction still, stainless steel stirred tank etc.
Embodiment 7
Be the indoor biometrics test of Herbicidal combinations of the present invention below.
For examination weeds: lady's-grass (Digitaria sanguinalis (L.) Scop), barnyard grass (Echinochloa crusgalli (L.) Beauv), acalypha copperleaf (Acalypha hispida Burm), kitchen garden (Portulaca oleracea L.)
The cultivation of experimental condition and examination material: carry out the cultivation testing examination material in illumination cultivation room, temperature 25 ~ 35 DEG C.Be sowed in the plastic basin of diameter 8cm by quantitative lady's-grass, barnyard grass, acalypha copperleaf, kitchen garden seed, earthing 1 ~ 2mm, puts into the enamel tray that water is housed, and allows water infiltrate gradually, transfers to illumination cultivation room stand-by after waiting water to be seeped into soil table.
Reagent agent: 90% dimethenamid crude oil, Yin Bang Chemical Co., Ltd. of Shangyu city provides; The former medicine of 90% pyribenzoxim, Changzhou Rui Ping Chemical Co., Ltd. provides.
Reagent agent drug solution preparing: take quantitative dimethenamid, the former medicine of pyribenzoxim respectively with electronic balance, after adding emulsifier special dissolving, then the acetone adding 2 times extremely dissolves completely, is diluted to required concentration with the Tween-80 aqueous solution of 0.1%.
Test dose designs: every medicament single dose is according to as follows to the respective featured configuration concentration testing weeds: dimethenamid establishes 200,400,800,1600g.a.i./ha (lady's-grass, barnyard grass); 240,480,960,1920 g.a.i./ha (acalypha copperleaf, kitchen garden), pyribenzoxim establishes 10,20,40,80g.a.i./ha (lady's-grass, barnyard grass); 15,30,60,120g.a.i./ha (acalypha copperleaf, kitchen garden); Each medicament variable concentrations uses to obtain different blended dosing with between two.Concrete experimental scheme dosage is in table 1 and table 2.
Table 1 reagent agent prevents and kill off lady's-grass, barnyard grass test dose design (consumption g.a.i./ha)
Table 2 reagent agent prevents and kill off acalypha copperleaf, kitchen garden test dose design (consumption g.a.i./ha)
Application method: tested in lady's-grass, barnyard grass, acalypha copperleaf 2 leaf 1 heart stage, the cauline leaf even spraying process of kitchen garden 4 leaf phase.Accurately calculate by accurate spray tower actual spray powder is long-pending and prepares required liquid, pending plastic basin annular being evenly arranged on rotating spraying platform, spraying process.Atomisation pressure 2kg/m2, Conic nozzle flow 100ml/min, repeat for 4 times.
Weedy rices method, time and number of times: the damage symptoms (as growth inhibition, chlorosis, deformity etc.) recording weeds after dispenser in detail, weighs each process weeds acrial part fresh weight after 20 days, calculate fresh weight preventive effect.
Drug effect computational methods: the evaluation of result of the test Gowing method use with after synergy type.Gowing law theory preventive effect calculating formula is:
In formula, X, Y are respectively the anti-valid value of actual measurement (%) of two single doses, E is the anti-valid value of actual measurement (%) that different ratio is used with, E0 is theoretical anti-valid value (%), when E-E0 is summation action between-10 ~ 10 time, is synergistic effect as E-E0>10, is antagonism as E-E0<-10.
Result of the test is in table 3 and table 4.
Table 3 dimethenamid preventive effect result to lady's-grass, barnyard grass mixed with pyribenzoxim
Table 4 dimethenamid preventive effect result to kitchen garden, acalypha copperleaf mixed with pyribenzoxim
In process of the test, find, after dimethenamid and pyribenzoxim are used, have the symptoms such as reddening to leaves such as kitchen gardens, late-acting weak effect.As can be seen from table 3,4, survey the difference of preventive effect and theoretical preventive effect between 0 ~ 6 after dimethenamid is mixed with pyribenzoxim to lady's-grass, barnyard grass, between-10 ~ 10, both explanations are mixed all belongs to summation action to lady's-grass, barnyard grass; As can be seen from Table 3, survey the difference of preventive effect and theoretical preventive effect between 0 ~ 11.1 to kitchen garden, acalypha copperleaf after dimethenamid is mixed with pyribenzoxim, both explanations are used with to kitchen garden, Acalypha in summation action, and have synergistic effect.
Embodiment 8
Use below embodiment 1,4, comparative example carries out drug effect control to corn weeds in field, mainly prevent and kill off object be grassy weed lady's-grass, green foxtail, barnyard grass, eleusine indica, the rhizome of nutgrass flatsedge etc., broad leaved weed kitchen garden, Amaranthus retroflexus, lamb's-quarters etc.Comparative example is: 720g/l dimethenamid missible oil, 10% pyribenzoxim aqueous emulsion, and clear water contrast (CK).
Establish embodiment medicament, comparative example medicament and with clear water (CK) totally 9 process in contrast in this field trial, each process repetition 4 times, totally 36 process communities, see that weeds 2 ~ 4 Leaf-Age-Period carries out cauline leaf spraying process in corn field.Preventive effect is investigated, and investigates 2 times respectively at 20d, 40d after dispenser.Often process random 4 point samplings in community, often some 0.25m2, point each treatment region of Variety investigation remaining weeds strain number, weeds are extracted and take overground part fresh weight by second time investigation.Calculate strain preventive effect and fresh weight preventive effect.The results are shown in Table 5, table 6 and table 7.
After table 5 medicine, 20d is to corn field weed preventive effect (%)
After table 6 medicine, 40d is to corn field weed preventive effect (%)
After table 7 embodiment 1 and embodiment 4 medicine, 40d is to corn field weed fresh weight preventive effect (%)
Table 5,6, the result of the test of 7 shows, after medicine after 20 days and medicine 40 days, embodiment 1 and embodiment 4 pairs of corn fields are mixed with the strain preventive effects such as mare Tang, green foxtail, barnyard grass, eleusine indica, the rhizome of nutgrass flatsedge, kitchen garden, Amaranthus retroflexus, lamb's-quarters and namely fresh weight preventive effect reaches desirable control efficiency, all higher than comparative example; Embodiment 1 uses active ingredient more than 60 grams, embodiment 4 per hectare to use active ingredient more than 65 grams in per hectare, and preventive effect is all more than 90%.This invention composition just reaches desirable control efficiency under low dosage, reduces medicament usage amount, reduces production cost, decreases environmental pollution.In addition, duration of test field observation find, this invention composition on corn growth without impact, high to crop safety.
Claims (9)
1. contain a Herbicidal combinations for dimethenamid and pyribenzoxim, it is characterized in that, the active ingredient of described Herbicidal combinations is dimethenamid and pyribenzoxim, and the weight ratio of dimethenamid and pyribenzoxim is 35:1 ~ 1:25.
2. the Herbicidal combinations of dimethenamid according to claim 1 and pyribenzoxim, is characterized in that, the weight ratio of described active ingredient dimethenamid and pyribenzoxim is 2 ~ 10:1.
3. the Herbicidal combinations of dimethenamid according to claim 1 and pyribenzoxim, is characterized in that, the weight ratio of described active ingredient dimethenamid and pyribenzoxim is 8 ~ 10:1
4. the Herbicidal combinations of dimethenamid according to claim 1 and pyribenzoxim, is characterized in that, described active ingredient dimethenamid and pyribenzoxim account for 1% ~ 90% in described Herbicidal combinations.
5. the Herbicidal combinations of dimethenamid according to claim 4 and pyribenzoxim, is characterized in that, also containing carrier and auxiliary agent in described Herbicidal combinations.
6. the Herbicidal combinations of dimethenamid according to claim 5 and pyribenzoxim, is characterized in that, described carrier is one or more in water, solvent or filler.
7. follow the Herbicidal combinations of dimethenamid according to claim 5 and pyribenzoxim, it is characterized in that, described auxiliary agent comprises surfactant or other conven-tional adjuvants.
8. the Herbicidal combinations of dimethenamid according to claim 5 and pyribenzoxim, is characterized in that, described auxiliary agent comprises emulsifier, dispersant, wetting agent, bleeding agent, antifreezing agent, thickener, stabilizing agent, disintegrant or defoamer.
9. the dimethenamid according to the arbitrary claim of claim 1 ~ 8 and the Herbicidal combinations of pyribenzoxim, is characterized in that, the formulation of described Herbicidal combinations is missible oil, suspension emulsion, wetting powder, water dispersible granules, aqueous emulsion or microemulsion.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001024633A2 (en) * | 1999-10-06 | 2001-04-12 | Bayer Aktiengesellschaft | Selective herbicides based on pyrimidine-derivatives |
| WO2003000058A1 (en) * | 2001-06-21 | 2003-01-03 | Bayer Cropscience Ag | Selective herbicides based on pyrimidine derivatives |
| CN103096715A (en) * | 2010-08-18 | 2013-05-08 | 孟山都技术公司 | Early applications of encapsulated acetamides for reduced injury in crops |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001024633A2 (en) * | 1999-10-06 | 2001-04-12 | Bayer Aktiengesellschaft | Selective herbicides based on pyrimidine-derivatives |
| WO2003000058A1 (en) * | 2001-06-21 | 2003-01-03 | Bayer Cropscience Ag | Selective herbicides based on pyrimidine derivatives |
| CN103096715A (en) * | 2010-08-18 | 2013-05-08 | 孟山都技术公司 | Early applications of encapsulated acetamides for reduced injury in crops |
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