CN112006025A - Weeding composition containing pinoxaden and triclopyr and preparation method thereof - Google Patents
Weeding composition containing pinoxaden and triclopyr and preparation method thereof Download PDFInfo
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- CN112006025A CN112006025A CN202010919621.5A CN202010919621A CN112006025A CN 112006025 A CN112006025 A CN 112006025A CN 202010919621 A CN202010919621 A CN 202010919621A CN 112006025 A CN112006025 A CN 112006025A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
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Abstract
The invention discloses a weeding composition containing pinoxaden and triclopyr in a compounding manner and application thereof, wherein the mass ratio of the pinoxaden to the triclopyr serving as an effective component in the weeding composition is 1: 60-60: 1, and the preferable mass ratio is 1: 30-30: 1. The dosage forms are missible oil, suspending agent, aqueous emulsion, dispersible oil suspending agent, wettable powder, water dispersible granule and dry suspending agent. The invention is mainly used for preventing and controlling annual gramineous weeds and various broadleaf weeds in wheat fields, has obvious synergistic effect, has obviously better prevention effect than a single dose, has high safety to wheat and meets the safety requirement of pesticide preparations.
Description
Technical Field
The invention belongs to the technical field of pesticides, and particularly relates to a weeding composition containing pinoxaden and triclopyr in a compounding manner, which is used for preventing and killing gramineous and broadleaf weeds in wheat field after-seedling stem and leaf treatment.
Background
Pinoxaden (Pinoxaden), chemical name: 2, 2-dimethyl-propiolic acid 8- (2, 6-diethyl-4-methyl-phenyl) -9-oxo-1, 2,4,5-4 hydro-9H-pyrazolo [1,2-d ] [1,4,5] oxadiazepin-7-yl ester. It is a phenylpyrazoline herbicide discovered, developed and produced by prometryn and has a unique chemical structure. It inhibits the activity of acetyl-coa carboxylase (ACCase), blocks fatty acid biosynthesis, interferes with cell membrane formation, causes the growth of weeds to stop, and eventually dies. Pinoxaden is a selective and systemic conduction type gramineae weed herbicide, has high efficiency and broad spectrum, and can be quickly absorbed by stems and leaves. After 1-3 weeks of administration, phytotoxic symptoms appear, and meristems stop growing and rapidly die. After germination, the herbicide composition can be used for preventing and killing annual gramineous weeds in wheat and barley fields, such as alopecurus, Japanese alopecurus, wild oat, ryegrass, green bristlegrass, stiff grass, club grass and the like. It is safe to wheat, barley and non-target organism in the current crop, and safe to the succeeding crop and environment.
Triclopyr (Trichlopyr) in its chemical form including triclopyr, triclopyr triethylamine salt, triclopyr choline salt and triclopyr butoxyethyl ester. Triclopyr, a pyridyloxycarboxylic acid herbicide, is systemic, conductive and low-toxic, belongs to hormone herbicides, is absorbed by leaf surfaces and root systems of plants, and is conducted to the whole plant in the plant body, so that the root, stem and leaf of the plant are deformed, vascular bundles are plugged or broken, and the plant dies gradually. Gramineous crops have a certain resistance to them. The weeding composition is suitable for weeding, killing and irrigating before forest forestation, maintaining fire lines, supporting pine trees to breed and improving forestry, preventing and removing broadleaf weeds and woody plants in non-cultivated land, and can also be used for preventing and removing broadleaf weeds in fields of gramineous crops such as wheat, corn, sorghum and the like.
At present, no report is made on the weeding composition compounded by pinoxaden and triclopyr and the application thereof.
Disclosure of Invention
Based on the situation, the invention aims to provide a weeding composition containing pinoxaden and triclopyr, which is mainly used for preventing and treating annual gramineous weeds and various broadleaf weeds in wheat fields.
In order to achieve the purpose, the invention adopts the technical scheme that:
a weeding composition consists of pinoxaden and triclopyr, wherein the mass ratio of the pinoxaden to the triclopyr is 1: 60-60: 1, and the preferable mass ratio is 1: 30-30: 1; more preferably, the mass ratio of pinoxaden to triclopyr is 1:4-1:6 or 1:8-1:20 or 1:8/3-1:20 or 1:4/3-1:8/3 or 1:4-1:8 or 1:12-1: 16.
It is a further object of the present invention to provide a herbicidal formulation containing the above herbicidal composition.
The pesticide formulation which can be prepared by the weeding preparation comprises missible oil, suspending agent, aqueous emulsion, dispersible oil suspending agent, wettable powder, water dispersible granule and dry suspending agent.
The specific embodiment of the pesticide formulation prepared from the weeding composition is as follows:
when the weeding preparation is missible oil, the missible oil consists of the following components in percentage by mass: 1-30% of pinoxaden, 1-30% of triclopyr, 5-10% of an emulsifier, and the balance of organic solvent.
Specifically, the missible oil consists of the following components in percentage by mass: 5% of pinoxaden, 10% of triclopyr, 4.5% of EL-30 (castor oil polyoxyethylene ether emulsifier), 3% of emulsifier No. 500 (calcium dodecyl benzene sulfonate emulsifier), 20% of n-amyl alcohol, 35% of sec-butyl acetate and solvent oil S-200, wherein the balance is 100%.
The specific production process of the missible oil comprises the following steps: firstly, the pinoxaden and the triclopyr which are effective components are added into a solvent, stirred and mixed until the mixture is transparent and uniform, then an emulsifier is added, stirred and uniform, and the emulsifiable concentrate preparation of the composition of the invention can be obtained after filtration.
When the herbicide preparation is a suspending agent, the suspending agent consists of the following components in percentage by mass: 1-30% of pinoxaden, 1-30% of triclopyr, 2-10% of a dispersant, 1-5% of a wetting agent, 2-10% of an antifreezing agent, 0.1-1% of an antifoaming agent, 0.1-3% of a thickening agent, 0.1-2% of a preservative, and the balance of water.
Specifically, the suspending agent comprises the following components in percentage by mass: pinoxaden 6%, triclopyr 24%, Agrilan 788 (polyacrylate dispersant, akzo nobel) 3%, Supragil MNS/90 (naphthalene formaldehyde condensate sulfonate dispersant, Solvay) 3%, Genapol X080 (fatty alcohol polyoxyethylene ether sulfate wetting agent, Clariant) 2%, propylene glycol (anti-freeze agent) 5%, Sag622 (organosilicone defoamer, Momentive) 0.2%, xanthan gum (thickener) 0.2%, karson (preservative) 0.2%, water to 100%.
The specific production process of the suspending agent comprises the following steps: firstly, adding other additives except the thickening agent into water, uniformly mixing the additives by high-speed shearing, adding the pinoxaden serving as an effective component and the triclopyr, uniformly mixing the materials, and enabling the particle diameter D to be larger by a sand mill taking grinding media as zirconium beads50Controlling the particle size below 5 mu m, adding the thickening agent and uniformly shearing to obtain the suspending agent preparation of the composition.
When the weeding preparation is an aqueous emulsion, the aqueous emulsion consists of the following components in percentage by mass: 1-30% of pinoxaden, 1-30% of triclopyr, 2-10% of a dispersant, 1-5% of an emulsifier, 10-30% of an organic solvent, 2-10% of an anti-freezing agent, 0.1-1% of an antifoaming agent, 0.1-3% of a thickener, 0.1-2% of a preservative, and the balance of water.
Specifically, the aqueous emulsion comprises the following components in percentage by mass: 3% of pinoxaden, 8% of triclopyr, 10% of solvent oil S-150#, 3% of Soprophor SC (alkylphenol polyoxyethylene phosphate dispersant, Solvay), 3% of EL-40 (castor oil polyoxyethylene ether), 5% of urea (anti-freezing agent), 0.2% of Sag 630 (organic silicone defoamer), 0.2% of xanthan gum (thickening agent), 0.2% of kathon (preservative) and the balance of water to 100%.
The specific production process of the aqueous emulsion comprises the following steps: dissolving pinoxaden in an organic solvent to form an oil phase, mixing the rest components with water to form a water phase, finally slowly adding the oil phase into the high-speed sheared water phase in batches, homogenizing, emulsifying and filtering to obtain the aqueous emulsion preparation of the composition.
When the herbicide preparation is a dispersible oil suspending agent, the dispersible oil suspending agent consists of the following components in percentage by mass: 1-30% of pinoxaden, 1-30% of triclopyr, 1-5% of a dispersant, 5-20% of an emulsifier, 1-5% of a thickener and the balance of an oil medium.
Specifically, the dispersible oil suspending agent comprises the following components in percentage by mass: pinoxaden 12%, triclopyr 16%, Atlox Metaperse 550S (polyacrylic acid and maleic anhydride copolymer salt dispersant, Croda) 2%, Atlas G-1096 (sorbitol polyoxyethylene ether oleate emulsifier, Croda) 15%, AEROSIL R974 (fumed silica thickener, EVONIK) 2%, mineral oil Genera 9 (oil medium, Total) to 100%.
The specific production process of the dispersible oil suspending agent comprises the following steps: adding other auxiliary agents into an oil medium, uniformly mixing the auxiliary agents through high-speed shearing, adding the pinoxaden and the triclopyr serving as effective components, uniformly mixing the mixture, and enabling the particle size D to be larger through a sand mill taking grinding media as zirconium beads50Controlling the particle size below 5 mu m, and uniformly shearing to obtain the dispersible oil suspending agent preparation of the composition.
When the herbicide preparation is wettable powder, the wettable powder comprises the following components in percentage by mass: 1-30% of pinoxaden, 1-30% of triclopyr, 3-10% of a dispersant, 1-5% of a wetting agent and the balance of a filler.
Specifically, the wettable powder comprises the following components in percentage by mass: pinoxaden 9%, triclopyr 30%,
NN 8906 (naphthalene formaldehyde condensate sulfonate dispersant, BASF) 7%, Geropon SDS (dioctyl sodium sulfosuccinate wetting agent, Solvay) 3%, SIPERNAT22LS (white carbon black, EVONIK) 7%, Celite 499 (diatomaceous earth, Imerys) to 100%.
The specific production process of the wettable powder comprises the following steps: the pinoxaden serving as an effective component, the triclopyr, the dispersant, the wetting agent and the filler are uniformly stirred and mixed in a mixing kettle according to the proportion, and are crushed by a jet mill and then are uniformly mixed, so that the wettable powder preparation of the composition can be obtained.
When the weeding preparation is a water dispersible granule, the water dispersible granule consists of the following components in percentage by mass: 1-30% of pinoxaden, 1-30% of triclopyr, 1-10% of a dispersant, 1-5% of a wetting agent and the balance of a filler.
The water dispersible granule comprises the following components in percentage by mass: 5% pinoxaden, 30% triclopyr, 7% suprex K powder (naphthalene formaldehyde condensate sulfonate dispersant, switzerland's ang high chemical company), 4% sodium lauryl sulfate (wetting agent), 20% corn starch, MXK201 (kaolin filler, inner mongol monty kaolin limited) to make up to 100%.
The specific production process of the water dispersible granule comprises the following steps: the preparation method comprises the steps of uniformly stirring and mixing pinoxaden as an effective component, triclopyr, a dispersing agent, a wetting agent and a filler in a mixing kettle according to a ratio, crushing by a jet mill, uniformly mixing, kneading, granulating, drying, screening, and sampling and analyzing to obtain the water dispersible granule preparation of the composition.
When the herbicide preparation is a dry suspending agent, the dry suspending agent consists of the following components in percentage by mass: 1-30% of pinoxaden, 1-30% of triclopyr, 5-25% of a dispersant, 1-5% of a wetting agent and the balance of a filler.
Specifically, the dry suspending agent comprises the following components in percentage by mass: pinoxaden 21%, triclopyr 28%, REAX 910 (sodium lignosulfonate dispersant, Meadwestvaco) 20%, BX (sodium diisobutylnaphthalenesulfonate wetting agent, Anyang bicyclic adjuvant Co., Ltd.) 3%, MXK201 (kaolin filler, inner Mongolian Kaolin Co., Ltd.) to make up 100%.
The specific production process of the dry suspending agent comprises the following steps: adding the auxiliary agent and the filler into water, uniformly mixing the auxiliary agent and the filler through high-speed shearing, adding the pinoxaden serving as an effective component and the triclopyr, uniformly mixing the materials, and enabling the particle diameter D to be larger through a sand mill taking a grinding medium as zirconium beads90Controlling the particle size below 5 mu m, then entering a spray drying tower for spray drying, and then screening to obtain the dry suspending agent preparation of the composition.
The dispersing agent is selected from one or a mixture of more than two of naphthalene or alkyl naphthalene formaldehyde condensate sulfonate, fatty alcohol ethylene oxide adduct sulfonate, alkylphenol polyoxyethylene ether sulfonate, lignin and derivative sulfonate thereof, polymerized alkylaryl sulfonate, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, fatty alcohol polyoxyethylene ether sulfate, fatty alcohol ethane adduct phosphate, alkylphenol polyoxyethylene phosphate, polyacrylate, polyacrylic acid and maleic anhydride copolymer salt (or ester), EO-PO block copolymer, hydroxystearic acid and alkyl glycol block copolymer.
The wetting agent is selected from one or a mixture of more than two of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, sodium triisopropyl naphthalene sulfonate, sodium diisobutyl naphthalene sulfonate, dioctyl sodium sulfosuccinate, fatty alcohol-polyoxyethylene ether sulfate, alkylphenol polyoxyethylene ether sulfosuccinate and fatty alcohol-polyoxyethylene ether (containing normal and isomeric).
The emulsifier is selected from one or more of alkylphenol polyoxyethylene ether, benzyl phenol polyoxyethylene ether, phenylethylphenol polyoxyethylene ether phosphate, fatty alcohol polyoxyethylene ether, phenylethylphenol polyoxyethylene ether polyoxypropylene ether, castor oil polyoxyethylene ether (such as EL-30 and EL-40), alkylphenol polyoxyethylene ether formaldehyde condensate, polyoxyethylene sorbitan monooleate, sorbitan fatty acid ester, polyethylene glycol oleate, sorbitol polyoxyethylene ether oleate (such as Atlas G-1096) and dodecyl benzene sulfonate (calcium salt or isopropylamine salt, such as emulsifier 500 #).
The antifreezing agent is one or a mixture of more than two of ethylene glycol, propylene glycol, glycerol, polyethylene glycol, urea, sorbitol and inorganic salt.
Wherein the defoaming agent is selected from one or a mixture of more than two of organic silicones (such as Sag622 and Sag 630), C19-C20 saturated aliphatic carboxylic acids and esters and ester-ether compounds thereof.
The thickening agent is one or a mixture of more than two of xanthan gum, Arabic gum, methylcellulose, sodium carboxymethylcellulose, hydroxypropyl cellulose, sodium acrylate, polyvinyl alcohol, polyvinylpyrrolidone, sodium polyacrylate, polyvinyl acetate, disperse silicic acid, precipitated silica, fumed silica, organic bentonite and magnesium aluminum silicate.
The preservative is selected from one or a mixture of more than two of sodium benzoate, sorbic acid, sodium salicylate, cason, benziothiazolinone and phenoxyethanol.
The organic solvent is one or a mixture of more than two of cyclohexanone, N-dimethylformamide, N-dimethyldecanamide, N-dimethyloctadecanoamide, N-methylpyrrolidone, N-octylpyrrolidone, propylene carbonate, diethyl carbonate, sec-butyl acetate, diethyl malonate, diisononyl phthalate, C3-10 alcohol and aromatic solvent oil (such as S-150#, S-200# and S-330 #).
Wherein the oil medium is selected from one or more of soybean oil, oleum Rapae, oleum gossypii semen, oleum Maydis, oleum ricini, palm oil, epoxidized soybean oil, diesel oil, methyl esterified vegetable oil, engine oil, and mineral oil (such as mineral oil Genera 9).
The filler is selected from one or a mixture of more than two of diatomite, attapulgite, light calcium carbonate, sepiolite, kaolin, white carbon black, talcum powder, montmorillonite, corn starch and ammonium sulfate.
Still another object of the present invention is to provide the above herbicidal composition and use of the herbicidal formulation.
The application provided by the invention is the application of the weeding composition and the weeding preparation in preventing and controlling annual gramineous weeds and various broadleaf weeds in wheat fields.
The weeds comprise: alopecurus, setaria, cleavers and speedwell.
The inventor selects two herbicides of pinoxaden and triclopyr which have different weed control spectrums and complementary advantages and disadvantages to be compounded for preventing and removing weeds in wheat fields. The result shows that the two are compounded to have obvious synergistic effect on weeds in wheat fields, the weed control spectrum is expanded, the application dosage is obviously reduced, the safety is obviously improved, and the environmental pollution is small. The present inventors have completed the present invention on the basis of a large number of indoor formulation screening tests and field efficacy tests.
The compound herbicide taking pinoxaden and triclopyr as effective components is used for preventing and treating annual gramineous weeds and various broadleaf weeds in wheat fields, has obvious synergistic effect, has obviously better prevention effect than a single agent, reduces the prevention and treatment cost, has high safety on wheat and meets the safety requirement of pesticide preparations.
Detailed Description
The method of the present invention is illustrated by the following specific examples, but the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.
The experimental procedures used in the following examples are all conventional procedures unless otherwise specified.
Materials, reagents and the like used in the following examples are commercially available unless otherwise specified.
Examples of indoor biological activities:
the tested weeds: alopecurus, setaria, cleavers and speedwell.
Test conditions and culture of test materials: and (3) culturing the test material in a light incubator at the temperature of 25-35 ℃. Quantitative alopecurus pellucida seeds (Shandong Ruihe Setaria Seisakurz Co., Ltd.), green bristlegrass seeds (Jiangsu Changjing Sejing Co., Ltd.), cleavers seeds (Nanjing Fengshao gardening Co., Ltd.), and speedwell seeds (Jiangsu Changjing Sejing Sciryu Co., Ltd.) are sowed in plastic pots with the diameter of 8cm after germination and white exposure, covered with 1-2 mm of soil, put into trays filled with water, let water gradually permeate into the soil, and transferred to a light culture room for standby after water permeates into the soil surface.
Reagent to be tested: 97% pinoxaden raw material, provided by Jiangsu Rensheng crop protection technology, Inc.; 99% triclopyr technical, available from egsen chemical company, hong kong. In the examples, the amount of the test agent is the amount of the effective ingredient after hundred percent.
Preparing a test reagent liquid medicine: quantitative pinoxaden and triclopyr raw drugs are respectively weighed by an electronic balance, dissolved by Dimethylformamide (DMF), and diluted to the required concentration by 0.1% Tween-80 aqueous solution.
The instrument equipment comprises: ASS-4 type automatic quantitative spraying system (national research center for agricultural information engineering and technology). Ten thousandth electronic balance of GA110 type (germany); ZDR2000 intelligent data recorder (hangzhou ze large instruments ltd); SPX type intelligent biochemical incubator (Ningbo Jiangnan Instrument factory).
Design of experimental dosage: see table 1.
Table 1 dosage design (g a.i./hm) of test agent for weed control2)
The application method comprises the following steps: the test is that the soil is evenly sprayed after the weed seeds are exposed and sown. Uniformly laying weeds in an area of 1m2Spraying with ASS-4 type automatic quantitative spraying system, Teejet 9503EVS fan-shaped spray head, with a liquid spraying amount of 450L/hm2Spraying pressure 0.275MPa, 4 times.
Weed investigation method, time: weighing the fresh weight of the overground part of each treated weed 20 days after the application of the herbicide, and calculating the fresh weight control effect.
The drug effect calculation method comprises the following steps: the theoretical fresh weight inhibition (E) of each treated mixed composition was calculated by the Gowing method0X + Y-X Y/100), and comparing with the observed inhibition rate (E) to evaluate the combined action type of the two on weeds when E-E is used0Values greater than 10% are synergistic, values less than-10% are antagonistic, and values between-10% and 10% are additive.
TABLE 2 prevention and control of grassy weeds by the combination of pinoxaden and triclopyr
TABLE 3 broad-leaved weed control effect of pinoxaden in combination with triclopyr
As can be seen from the above tables 2 and 3, the composition provided by the invention has excellent control effect on gramineous weeds and broadleaf weeds, and can improve the control effect of pinoxaden and triclopyr on alopecurus, setaria, cleavers and veronica, and has obvious synergistic effect. The two effective components have different weeding mechanisms and are safe to wheat, so the herbicide can be used for treating weeds in gramineae, latifoliaceae and the like in wheat fields.
The present invention will be further described with reference to the following examples.
Formulation example 1, 15% Azolinate-Trifluoxyacetic acid cream
5% of pinoxaden, 10% of triclopyr, 4.5% of EL-30 (castor oil polyoxyethylene ether emulsifier, CRODA), 3% of emulsifier 500# (calcium dodecylbenzenesulfonate emulsifier, Jiangsu Xinde Biotech Co., Ltd.), 20% of n-amyl alcohol (solvent, DOW), 35% of sec-butyl acetate (solvent, Nantong Runfeng petrochemical Co., Ltd.), and 100% of solvent oil S-200 (Jiangsu Hualun chemical Co., Ltd.). The 15 percent pinoxaden-triclopyr missible oil is prepared.
Formulation example 2, 30% pinoxaden-triclopyr suspension
Pinoxaden 6%, triclopyr 24%, Agrilan 788 (polyacrylate dispersant, akzo nobel) 3%, Supragil MNS/90 (naphthalene formaldehyde condensate sulfonate dispersant, Solvay) 3%, Genapol X080 (fatty alcohol polyoxyethylene ether sulfate wetting agent, Clariant) 2%, propylene glycol (anti-freeze agent, new source chemical limited company of shandonghai) 5%, Sag622 (organosilicone defoamer, Momentive) 0.2%, xanthan gum (thickener, shanghai wan chemical trade limited company) 0.2%, karson (preservative, shandongdan blue chemical limited company) 0.2%, water to make up 100%. To prepare 30 percent pinoxaden-triclopyr suspending agent.
Formulation example 3, 11% aqueous Azolinate-Trifluoxyacetic acid emulsion
3% of pinoxaden, 8% of triclopyr, 10% of solvent oil S-150# (Jiangsu Hualun chemical Co., Ltd.), 3% of Soprophor SC (alkylphenol polyoxyethylene phosphate dispersant, Solvay), 3% of EL-40 (castor oil polyoxyethylene ether, Jiangsu Haian petrochemical Co., Ltd.), 5% of urea (antifreeze, chemical fertilizer control Co., Ltd.), 0.2% of Sag 630 (organic silicone defoamer, Michigan high-new material group), 0.2% of xanthan gum (thickener, Shanghai Wan chemical trade Co., Ltd.), 0.2% of Kathon (preservative, Beijing Guangyuan agricultural chemical Co., Ltd.), and the balance of water being 100%. The 11 percent pinoxaden-triclopyr emulsion in water is prepared.
Formulation example 4, 28% Azolinate Trifluoxyacetic acid dispersible oil suspension
Pinoxaden 12%, triclopyr 16%, Atlox Metaperse 550S (polyacrylic acid and maleic anhydride copolymer salt dispersant, Croda) 2%, Atlas G-1096 (sorbitol polyoxyethylene ether oleate emulsifier, Croda) 15%, AEROSIL R974 (fumed silica thickener, EVONIK) 2%, mineral oil Genera 9 (oil medium, Total) to 100%. The 28 percent pinoxaden-triclopyr dispersible oil suspending agent is prepared.
Formulation example 5, 39% wettable powder of pinoxaden-triclopyr
Pinoxaden 9%, triclopyr 30%,
NN 8906 (naphthalene formaldehyde condensate sulfonate dispersant, BASF) 7%, geopon SDS (dioctyl sodium sulfosuccinate wetting agent, Solvay) 3%, SIPERNAT22LS (precipitated silica, EVONIK) 7%, Celite 499 (diatomaceous earth, Imerys) to make up 100%. The preparation is 39 percentThe pinoxaden-triclopyr wettable powder.
Formulation example 6, 35% Azolinate-Trifluoxyacetic acid Water dispersible granule
5% of pinoxaden, 30% of triclopyr, 7% of suppex K powder (Naphthalen chemical company, Switzerland Ohio chemical Co., Ltd.), 4% of sodium lauryl sulfate (wetting agent, Tomingtie evolution chemical Co., Ltd.), 20% of corn starch (Linyitailong practical Co., Ltd.), MXK201 (kaolin filler, Nemontmor Mongoli Kaolin Co., Ltd.) to make up 100%. To prepare 35 percent pinoxaden-triclopyr water dispersible granules.
Formulation example 7, 49% pinoxaden-triclopyr dry suspension
Pinoxaden 21%, triclopyr 28%, REAX 910 (sodium lignosulfonate dispersant, Meadwestvaco) 20%, BX (sodium diisobutylnaphthalenesulfonate wetting agent, Anyang bicyclic adjuvant Co., Ltd.) 3%, MXK201 (kaolin filler, inner Mongolian Kaolin Co., Ltd.) to make up 100%. To prepare 49 percent pinoxaden-triclopyr dry suspending agent.
(II) field efficacy test
Take wheat field as an example: in a wheat field, in the 4-5 leaf stage of the tender bud of a wheat seedling, weeds mainly comprise alopecurus, setaria, cleavers and speedwell, and in the 3-5 leaf stage, the pinoxaden-triclopyr mixture prepared in preparation examples 1-7 is diluted with water to carry out the efficacy experiment on the weeds in the wheat field. And 5% pinoxaden emulsifiable concentrate (Aster plant protection engineering, Inc. of Anhui province) and 480g/L triclopyr emulsifiable concentrate (Shandong Esson chemical Co., Ltd.) were used as a control, and the death condition of weeds was investigated and the control effect was calculated at 15d and 30 days after the application (as shown in Table 4), while the phytotoxicity condition was observed.
TABLE 4 field test results for controlling weeds in wheat fields
The experimental results in table 4 show that the compounding of pinoxaden and triclopyr in the composition of the invention can form a synergistic effect, and can expand the weed control spectrum, and meanwhile, the composition has no antagonistic effect, thereby significantly improving the weeding effect and reducing the cost.
Safety survey, observation during the test period, and safety of all tested agents on wheat growth without phytotoxicity.
In conclusion, the weeding composition containing pinoxaden and triclopyr has a good control effect on annual gramineous weeds and various broadleaf weeds in wheat fields, and is safe to wheat. The compound preparation not only expands the weed control spectrum and improves the control effect, but also reduces the dosage and the cost. Therefore, the invention and the popularization of the compound preparation have very important significance to the society.
Claims (10)
1. A weeding composition comprises pinoxaden and triclopyr, wherein the mass ratio of the pinoxaden to the triclopyr is 1: 60-60: 1.
2. A herbicidal composition according to claim 1, characterized in that: the mass ratio of the pinoxaden to the triclopyr is 1: 30-30: 1.
3. A herbicidal preparation, the active ingredient of which is the herbicidal composition according to claim 1.
4. A herbicidal formulation according to claim 3, characterized in that: the dosage form of the herbicidal formulation comprises: missible oil, suspending agent, emulsion in water, dispersible oil suspending agent, wettable powder, water dispersible granule and dry suspending agent.
5. A herbicidal formulation according to claim 4, characterized in that: the weeding preparation is missible oil which is composed of the following components in percentage by mass: 1-30% of pinoxaden, 1-30% of triclopyr, 5-10% of an emulsifier, and the balance of organic solvent.
6. A herbicidal formulation according to claim 4, characterized in that: the weeding preparation is a suspending agent, and the suspending agent consists of the following components in percentage by mass: 1-30% of pinoxaden, 1-30% of triclopyr, 2-10% of a dispersant, 1-5% of a wetting agent, 2-10% of an antifreezing agent, 0.1-1% of an antifoaming agent, 0.1-3% of a thickening agent, 0.1-2% of a preservative, and the balance of water.
7. A herbicidal formulation according to claim 4, characterized in that: the weeding preparation is an aqueous emulsion which comprises the following components in percentage by mass: 1-30% of pinoxaden, 1-30% of triclopyr, 2-10% of a dispersant, 1-5% of an emulsifier, 10-30% of an organic solvent, 2-10% of an anti-freezing agent, 0.1-1% of an antifoaming agent, 0.1-3% of a thickener, 0.1-2% of a preservative, and the balance of water.
8. A herbicidal formulation according to claim 4, characterized in that:
the weeding preparation is a dispersible oil suspending agent which comprises the following components in percentage by mass: 1-30% of pinoxaden, 1-30% of triclopyr, 1-5% of a dispersant, 5-20% of an emulsifier, 1-5% of a thickener and the balance of an oil medium;
or, the weeding preparation is wettable powder, and the wettable powder comprises the following components in percentage by mass: 1-30% of pinoxaden, 1-30% of triclopyr, 3-10% of a dispersant, 1-5% of a wetting agent and the balance of a filler;
or the weeding preparation is water dispersible granules which comprise the following components in percentage by mass: 1-30% of pinoxaden, 1-30% of triclopyr, 1-10% of a dispersant, 1-5% of a wetting agent and the balance of a filler;
or the weeding preparation is a dry suspending agent which comprises the following components in percentage by mass: 1-30% of pinoxaden, 1-30% of triclopyr, 5-25% of a dispersant, 1-5% of a wetting agent and the balance of a filler.
9. A herbicidal formulation according to any one of claims 5 to 8, characterized in that:
the dispersing agent is selected from one or a mixture of more than two of naphthalene or alkyl naphthalene formaldehyde condensate sulfonate, fatty alcohol ethylene oxide adduct sulfonate, alkylphenol polyoxyethylene ether sulfonate, lignin and derivative sulfonate thereof, polymerized alkylaryl sulfonate, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, fatty alcohol polyoxyethylene ether sulfate, fatty alcohol ethane adduct phosphate, alkylphenol polyoxyethylene phosphate, polyacrylate, polyacrylic acid and maleic anhydride copolymer salt (or ester), EO-PO block copolymer, hydroxystearic acid and alkyl glycol block copolymer;
the wetting agent is selected from one or a mixture of more than two of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, sodium triisopropyl naphthalene sulfonate, sodium diisobutyl naphthalene sulfonate, dioctyl sodium sulfosuccinate, fatty alcohol-polyoxyethylene ether sulfate, alkylphenol polyoxyethylene ether sulfosuccinate and fatty alcohol-polyoxyethylene ether;
the emulsifier is selected from one or a mixture of more than two of alkylphenol polyoxyethylene ether, benzyl phenol polyoxyethylene ether, phenethyl phenol polyoxyethylene ether phosphate, fatty alcohol polyoxyethylene ether, phenethyl phenol polyoxyethylene ether polyoxypropylene ether, castor oil polyoxyethylene ether, alkylphenol polyoxyethylene ether formaldehyde condensate, polyoxyethylene sorbitan monooleate, sorbitan fatty acid ester, polyethylene glycol oleate, sorbitol polyoxyethylene ether oleate and dodecyl benzene sulfonate;
the antifreezing agent is one or a mixture of more than two of ethylene glycol, propylene glycol, glycerol, polyethylene glycol, urea, sorbitol and inorganic salt;
the defoaming agent is selected from one or a mixture of more than two of organic silicone, C19-C20 saturated aliphatic carboxylic acid and ester-ether compounds thereof;
the thickening agent is selected from one or a mixture of more than two of xanthan gum, Arabic gum, methylcellulose, sodium carboxymethylcellulose, hydroxypropyl cellulose, sodium acrylate, polyvinyl alcohol, polyvinylpyrrolidone, sodium polyacrylate, polyvinyl acetate, disperse silicic acid, precipitated silica, fumed silica, organic bentonite and magnesium aluminum silicate;
the preservative is selected from one or a mixture of more than two of sodium benzoate, sorbic acid, sodium salicylate, carbazone, benziothiazolinone and phenoxyethanol;
the organic solvent is one or a mixture of more than two of cyclohexanone, N-dimethylformamide, N-dimethyldecanamide, N-dimethyloctadecanoamide, N-methylpyrrolidone, N-octylpyrrolidone, propylene carbonate, diethyl carbonate, sec-butyl acetate, diethyl malonate, diisononyl phthalate, C3-10 alcohol and aromatic solvent oil;
the oil medium is selected from one or more of soybean oil, rapeseed oil, cottonseed oil, corn oil, castor oil, palm oil, epoxidized soybean oil, diesel oil, methyl esterified vegetable oil, engine oil and mineral oil;
the filler is selected from one or a mixture of more than two of diatomite, attapulgite, light calcium carbonate, sepiolite, kaolin, white carbon black, talcum powder, montmorillonite, corn starch and ammonium sulfate.
10. Use of the herbicidal composition according to claim 1 or 2 or the herbicidal formulation according to any one of claims 3 to 9 for weeding, preferably for controlling annual grassy weeds and various broadleaf weeds in wheat fields.
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