CN112293422B - Herbicide composition containing pyroxsulam and flufenacet - Google Patents
Herbicide composition containing pyroxsulam and flufenacet Download PDFInfo
- Publication number
- CN112293422B CN112293422B CN201910692552.6A CN201910692552A CN112293422B CN 112293422 B CN112293422 B CN 112293422B CN 201910692552 A CN201910692552 A CN 201910692552A CN 112293422 B CN112293422 B CN 112293422B
- Authority
- CN
- China
- Prior art keywords
- flufenacet
- pyroxsulam
- active ingredients
- dispersible
- granules
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000005531 Flufenacet Substances 0.000 title claims abstract description 80
- IANUJLZYFUDJIH-UHFFFAOYSA-N flufenacet Chemical compound C=1C=C(F)C=CC=1N(C(C)C)C(=O)COC1=NN=C(C(F)(F)F)S1 IANUJLZYFUDJIH-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 239000005607 Pyroxsulam Substances 0.000 title claims abstract description 67
- GLBLPMUBLHYFCW-UHFFFAOYSA-N n-(5,7-dimethoxy-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl)-2-methoxy-4-(trifluoromethyl)pyridine-3-sulfonamide Chemical compound N1=C2N=C(OC)C=C(OC)N2N=C1NS(=O)(=O)C1=C(OC)N=CC=C1C(F)(F)F GLBLPMUBLHYFCW-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 239000000203 mixture Substances 0.000 title claims abstract description 50
- 230000002363 herbicidal effect Effects 0.000 title claims description 12
- 239000004009 herbicide Substances 0.000 title description 10
- 238000009333 weeding Methods 0.000 claims abstract description 31
- 239000004480 active ingredient Substances 0.000 claims abstract description 24
- 239000004562 water dispersible granule Substances 0.000 claims abstract description 12
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- 239000000843 powder Substances 0.000 claims description 11
- 244000264242 Descurainia sophia Species 0.000 claims description 10
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- 241000196324 Embryophyta Species 0.000 abstract description 38
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- 235000021307 Triticum Nutrition 0.000 abstract description 18
- 239000000375 suspending agent Substances 0.000 abstract description 14
- 239000000575 pesticide Substances 0.000 abstract description 11
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- 239000004615 ingredient Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 30
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- 229940051841 polyoxyethylene ether Drugs 0.000 description 17
- 229920000056 polyoxyethylene ether Polymers 0.000 description 17
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 15
- -1 alkyl naphthalene sulfonates Chemical class 0.000 description 15
- 239000003795 chemical substances by application Substances 0.000 description 15
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- 229910019142 PO4 Inorganic materials 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
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- 235000021317 phosphate Nutrition 0.000 description 9
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- HVUMOYIDDBPOLL-XWVZOOPGSA-N Sorbitan monostearate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O HVUMOYIDDBPOLL-XWVZOOPGSA-N 0.000 description 7
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- 239000010452 phosphate Substances 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 5
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- DMAXMXPDVWTIRV-UHFFFAOYSA-N 2-(2-phenylethyl)phenol Chemical compound OC1=CC=CC=C1CCC1=CC=CC=C1 DMAXMXPDVWTIRV-UHFFFAOYSA-N 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
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- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
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- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 4
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- RZXLPPRPEOUENN-UHFFFAOYSA-N Chlorfenson Chemical compound C1=CC(Cl)=CC=C1OS(=O)(=O)C1=CC=C(Cl)C=C1 RZXLPPRPEOUENN-UHFFFAOYSA-N 0.000 description 3
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- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 3
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- YDEXUEFDPVHGHE-GGMCWBHBSA-L disodium;(2r)-3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Na+].[Na+].COC1=CC=CC(C[C@H](CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O YDEXUEFDPVHGHE-GGMCWBHBSA-L 0.000 description 3
- 229940079593 drug Drugs 0.000 description 3
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- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical class C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 3
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- 125000000217 alkyl group Chemical group 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
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- URXNVXOMQQCBHS-UHFFFAOYSA-N naphthalene;sodium Chemical compound [Na].C1=CC=CC2=CC=CC=C21 URXNVXOMQQCBHS-UHFFFAOYSA-N 0.000 description 2
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Classifications
-
- 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
-
- 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
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/82—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with three ring hetero atoms
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a weeding composition containing pyroxsulam and flufenacet, which comprises active ingredients of pyroxsulam and flufenacet, and the balance of pesticide auxiliary ingredients, wherein the mass ratio of the active ingredients of pyroxsulam and flufenacet in the weeding composition is 1: 50-50: 1, and the mass percentage of the sum of the pyroxsulam and the flufenacet in the weeding composition is 1-90%. The weeding composition can be prepared into one of dispersible oil suspending agent, wettable powder and water dispersible granule, and is used for preventing and killing annual weeds in wheat fields.
Description
Technical Field
The invention relates to a herbicide composition containing pyroxsulam and flufenacet, which is used for preventing annual weeds in wheat fields.
Background
Pyroxsulam (pyroxsulam) is a triazolopyrimidine systemic herbicide, a branched chain amino acid synthesis inhibitor; through phloem and xylem conduction, the drug is absorbed from leaf surfaces, buds and roots and is conducted to meristems; symptoms include bradykinesia and chlorosis, followed by necrosis and even death; the herbicide is mainly used for preventing and killing annual gramineous weeds and broadleaf weeds in cereal fields, and has the characteristic of wide herbicide controlling spectrum.
Flufenacet (flufenacet) is an aryloxyamide systemic herbicide belonging to unclassified cell division and cell growth inhibitors, and the main target site is fatty acid metabolism; tolerance is mainly due to rapid detoxification of glutathione transferases; the composition is used before or in early post-emergence period, has systemic activity, and has meristem activity through apoplast conduction and distribution; is a broad-spectrum selective herbicide for preventing and killing gramineous weeds and broadleaf weeds.
The herbicide composition has the advantages of broad weeding spectrum, actual effect improvement, weed resistance delay, time saving and labor saving. Through pesticide formula screening, the pesticide composition can effectively improve the control effect, reduce the dosage, reduce the cost, delay the generation of pesticide resistance of diseases, insect pests and grass pests, and is an important means for agricultural comprehensive treatment. The inventor conducts intensive research on the formulas of the pyroxsulam and the flufenacet, discovers that the pyroxsulam and the flufenacet are mixed, has synergism on annual weeds in wheat fields in a certain mixing proportion range, and completes the invention through further research.
Disclosure of Invention
The invention aims to solve the problems of poor drug resistance and actual control effect of a weeding preparation on farmland weeds in the prior art, and provides a weeding composition which is efficient, low in toxicity, good in quick response, long in lasting period and beneficial to comprehensive treatment of farmland weeds.
It is another object of the present invention to use the composition for controlling weeds in farmlands, particularly for controlling annual weeds in wheat fields.
The technical scheme of the invention is as follows:
weeding composition containing pyroxsulam and flufenacet, wherein the weight ratio of the active ingredients of pyroxsulam to flufenacet is 1:50-50:1;
further, the weight ratio of the active ingredients of the weeding composition, namely the pyroxsulam to the flufenacet, is 1:30-30:1;
further, the weight ratio of the active ingredients of the weeding composition, namely the pyroxsulam to the flufenacet, is 1:20-20:1;
further, the weight ratio of the active ingredients of the weeding composition, namely the pyroxsulam to the flufenacet, is 1:10-10:1;
further, the weight ratio of the active ingredients of the weeding composition, namely the pyroxsulam to the flufenacet, is 1:3-10:1;
further, the weight ratio of the active ingredients of the weeding composition, namely the pyroxsulam to the flufenacet, is 1:3-3:1;
furthermore, the weight ratio of the active ingredients of the weeding composition, namely the pyroxsulam to the flufenacet, is 1:3-1:1;
further, when the weeding composition is used for preventing and killing broadleaf weeds in a wheat field, the weight ratio is 1:3-1:1;
further, the weight ratio of the active ingredients of the weeding composition, namely the pyroxsulam to the flufenacet, is 1:2-3:1;
further, when the weeding composition is used for preventing and killing gramineous weeds in a wheat field, the weight ratio is 1:2-3:1;
further, the weight ratio of the pyroxsulam to the flufenacet is as follows: 1:30, 1:20, 1:10, 1:5, 1:3, 1:2, 1:1, 2:1, 3:1, 5:1, 10:1, 20:1, 30:1;
further, the weight ratio of the pyroxsulam to the flufenacet is as follows: 1:5, 1:3, 1:2, 1:1, 2:1, 3:1;
further, the weight ratio of the active ingredients of the weeding composition, namely the pyroxsulam to the flufenacet, is 1:2 or 1:1;
further, when the weeding composition is used for preventing and killing broadleaf weeds in a wheat field, the weight ratio is 1:2;
further, when the herbicidal composition is used for controlling grassy weeds in wheat fields, the weight ratio is 1:1;
the total weight of the active ingredients of the weeding composition accounts for 1-90% of the total weight of the composition, and is preferably 10-50%.
The invention provides a weeding composition containing pyroxsulam and flufenacet, which can be prepared into a preparation formulation acceptable in pesticides according to a method known by a person skilled in the art, wherein the preparation formulation comprises a solid preparation and a liquid preparation;
further, the solid preparation is powder, dispersible tablets, granules, soluble powder, soluble granules, soluble tablets, emulsion powder, emulsion granules, water dispersible granules, wettable powder, microcapsule granules, powder, large granules and water dispersible tablets;
further, the liquid preparation is microcapsule suspending agent, dispersible agent, emulsifiable concentrate, emulsion granule, oil emulsion, emulsion powder, aqueous emulsion, microemulsion, dispersible oil suspending agent, oil dispersion powder, suspending agent, soluble liquid and ultra-low volume liquid;
further, the preparation formulation is preferably selected from suspending agents, wettable powder, dispersible oil suspending agents and water dispersible granules;
further, suspending agents which may be used are: dispersants such as one or more of polycarboxylates, lignosulfonates, alkyl naphthalene sulfonates (diffusants NNOs), and the like; emulsifying agents such as one or more of BY (castor oil polyoxyethylene ether) series emulsifying agents (BY-110, BY-125, BY-140), nongru 700# (alkylphenol formaldehyde polyoxyethylene ether), nongru 2201, span-60# (sorbitan monostearate), tween-60# (sorbitan monostearate polyoxyethylene ether), nongru 1601# (phenethyl phenol polyoxyethylene polyoxypropylene ether) and the like; wetting agents such as one or more of alkylphenol ethoxylate formaldehyde condensate sulfates, alkylphenol ethoxylate phosphates, phenethyl phenol ethoxylate phosphates, alkyl sulfates, alkyl sulfonates, naphthalene sulfonates, and the like; one or more of thickeners such as white carbon black, polyvinyl alcohol, bentonite, magnesium aluminum silicate, etc.; one or more of antifreezing agents such as ethylene glycol, propylene glycol, glycerol, urea, inorganic salts such as sodium chloride, etc.; the carrier is deionized water;
further, the auxiliary agents usable for the wettable powder are: dispersants such as one or more of polycarboxylate, lignin sulfonate, polyoxyethylene polyoxypropylene ether block copolymer, alkyl naphthalene formaldehyde condensate sulfonate, alkylphenol polyoxyethylene ether phosphate, fatty alcohol polyoxyethylene ether phosphate, alkylphenol polyoxyethylene ether sulfonate, and the like; wetting agents such as one or more of alkyl sulfates, alkyl sulfonates, alkyl naphthalene sulfonates, and the like; fillers such as one or more of ammonium sulfate, urea, sucrose, glucose, diatomaceous earth, kaolin, white carbon black, light calcium, talc, attapulgite, clay, etc.;
further, adjuvants which may be used for the dispersible oil suspending agent are: dispersants such as one or more of polycarboxylates, lignosulfonates, alkyl naphthalene sulfonates (diffusants NNOs), and the like; emulsifying agents such as one or more of BY (castor oil polyoxyethylene ether) series emulsifying agents (BY-110, BY-125, BY-140), nongru 700# (alkylphenol formaldehyde polyoxyethylene ether), nongru 2201, span-60# (sorbitan monostearate), tween-60# (sorbitan monostearate polyoxyethylene ether), nongru 1601# (phenethyl phenol polyoxyethylene polyoxypropylene ether) and the like; wetting agents such as one or more of alkylphenol ethoxylate formaldehyde condensate sulfates, alkylphenol ethoxylate phosphates, phenethyl phenol ethoxylate phosphates, alkyl sulfates, alkyl sulfonates, naphthalene sulfonates, and the like; one or more of thickeners such as white carbon black, polyvinyl alcohol, bentonite, magnesium aluminum silicate, etc.; one or more of antifreezing agents such as ethylene glycol, propylene glycol, glycerol, urea, inorganic salts such as sodium chloride, etc.; dispersing medium such as one or more of soybean oil, rapeseed oil, wheat oil, methyl oleate, diesel oil, engine oil, mineral oil, etc.;
further, adjuvants which can be used in the water dispersible granule are: dispersants such as one or more of polycarboxylates (TERSPERSE 2700, T36, GY-D06, etc.), lignin sulfonates, alkyl naphthalene sulfonates, etc.; wetting agents such as one or more of alkyl sulfates, alkyl sulfonates, naphthalene sulfonates, and the like; disintegrants such as one or more of ammonium sulfate, sodium sulfate, polyvinylpyrrolidone, starch or its derivatives, bentonite, etc.; binding agents such as one or more of starch, glucose, polyvinyl alcohol, polyethylene glycol, sodium carboxymethyl cellulose, sucrose, etc.; fillers such as one or more of diatomaceous earth, kaolin, white carbon, light calcium, talc, attapulgite, clay, etc.;
further, the composition is a suspending agent, and the suspending agent comprises the following components in percentage by weight: 0.1 to 100 parts of pyroxsulam, 0.1 to 100 parts of flufenacet, 1 to 15 parts of dispersing agent, 0.5 to 20 parts of emulsifying agent, 1 to 10 parts of wetting agent, 1 to 10 parts of thickening agent, 0 to 10 parts of antifreezing agent and deionized water for the balance;
further, the composition is wettable powder, and the components and the content of the wettable powder are preferably as follows: 0.1 to 100 parts of pyroxsulam, 0.1 to 100 parts of flufenacet, 1 to 20 parts of dispersing agent, 1 to 15 parts of wetting agent and the balance of filler;
further, the composition is a dispersible oil suspending agent, and the dispersible oil suspending agent comprises the following components in percentage by weight: 0.1 to 100 parts of pyroxsulam, 0.1 to 100 parts of flufenacet, 1 to 15 parts of dispersing agent, 0.5 to 20 parts of emulsifying agent, 1 to 10 parts of wetting agent, 1 to 10 parts of thickening agent, 0 to 10 parts of antifreezing agent and the balance of dispersing medium;
further, the composition is a water dispersible granule, and the water dispersible granule comprises the following components in percentage by weight: 0.1 to 100 parts of pyroxsulam, 0.1 to 100 parts of flufenacet, 1 to 15 parts of dispersing agent, 1 to 10 parts of wetting agent, 1 to 15 parts of disintegrating agent, 1 to 10 parts of binder and the balance of filler.
The invention has reasonable components, good weeding effect and low medication cost, and the activity and weeding effect of the invention are not simple superposition of the activities of the components, but have obvious synergism, can enlarge the weed control spectrum, delay the resistance, has good safety to crops and meets the safety requirement of pesticide preparations.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more concise, the present invention will be described in the following specific examples, but the present invention is by no means limited to these examples. The following examples are only preferred embodiments of the present invention, which can be used to describe the present invention, and should not be construed as limiting the scope of the invention. It should be noted that any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Preparation examples
Example 1:30% sulfenamide-flufenacet suspension (2:1)
The formula comprises the following components: 20% of pyroxsulam, 10% of flufenacet, 2% of sodium alkyl sulfate, 3% of alkylphenol formaldehyde resin polyoxyethylene ether, 0.4% of carboxymethyl cellulose, 5% of propylene glycol, 0.2% of isothiazolinone and deionized water, and the balance of the components;
the preparation method comprises the following steps: according to the formula proportion, the active ingredients of pyroxsulam, flufenacet, surfactant and other functional auxiliary agents are sequentially placed in a reaction kettle, water is added and mixed uniformly, and the product is obtained through high-speed shearing, wet sanding and homogenizing and filtering.
EXAMPLE 2 25% Boscalid Fluofenacet suspension (4:1)
The formula comprises the following components: 20% of pyroxsulam, 5% of flufenacet, 10% of dodecyl polyoxyethylene ether phosphate, 2% of sodium alkyl polyoxyethylene ether sulfonate, 0.4% of magnesium aluminum silicate, 0.2% of carboxyethyl cellulose, 4% of sorbitol, 0.1% of sodium benzoate, 0.5% of silicone oil and deionized water are used for the balance;
the preparation method comprises the following steps: as in example 1.
Example 3:15% sulfenamide-flufenacet suspension (1:2)
The formula comprises the following components: 5% of pyroxsulam, 10% of flufenacet, 8% of dodecyl polyoxyethylene ether phosphate, 2% of sodium alkyl polyoxyethylene ether sulfonate, 0.4% of xanthan gum, 0.1% of carboxyethyl cellulose, 4% of sorbitol, 0.1% of sodium benzoate, 0.5% of silicone oil and deionized water, and the balance being made up;
the preparation method comprises the following steps: as in example 1.
Example 4:30% sulfentrazone-flufenacet wettable powder (1:2)
The formula comprises the following components: 10% of pyroxsulam, 20% of flufenacet, 5% of alkyl naphthalene formaldehyde condensate calcium sulfonate, 6% of alkylphenol polyoxyethylene ether sodium sulfonate, 3% of alkyl naphthalene sodium sulfonate, 5% of talcum powder and diatomite, and the balance of the components;
the preparation method comprises the following steps: according to the formula proportion of the embodiment, the active ingredients of the pyroxsulam and the flufenacet are added into a carrier, and a surfactant and other functional auxiliary agents are added into the carrier for mixing, and the wettable powder is prepared by mixing after jet milling.
Example 5:30% sulfentrazone-flufenacet wettable powder (2:1)
The formula comprises the following components: 20% of pyroxsulam, 10% of flufenacet, 4% of sodium lignin sulfonate, 5% of fatty alcohol polyoxyethylene ether phosphate, 4% of sodium polycarboxylate, 3% of sodium alkyl sulfate, 3% of white carbon black and talcum powder, wherein the balance is the rest;
the preparation method comprises the following steps: same as in example 4.
Example 6:20% sulfentrazone-flufenacet wettable powder (2:3)
The formula comprises the following components: 8% of pyroxsulam, 12% of flufenacet, 4% of alkyl naphthalene formaldehyde condensate calcium sulfonate, 5% of alkylphenol polyoxyethylene ether sodium sulfonate, 2% of alkyl naphthalene sodium sulfonate, 5% of talcum powder and kaolin, and the balance being the rest;
the preparation method comprises the following steps: same as in example 4.
Example 7:20% Boscalid/Fluothiazate dispersible oil suspension (1:1)
The formula comprises the following components: 10% of pyroxsulam, 10% of flufenacet, 2% of sodium polycarboxylate, 4% of agro-emulsion 1601#, 3% of tween-60#, 4% of agro-emulsion 2201, 1% of sodium alkyl sulfate, 0.5% of bentonite, 5% of propylene glycol and soybean oil, and the balance being made up;
the preparation method comprises the following steps: according to the formula proportion, the active ingredients of pyroxsulam, flufenacet, surfactant and other functional auxiliary agents are sequentially placed in a reaction kettle, and are evenly mixed by oiling, high-speed shearing and wet sanding are carried out, and finally, the product is obtained by homogenizing and filtering.
Example 8:15% sulfentrazone-flufenacet dispersible oil suspension (1:4)
The formula comprises the following components: 3% of pyroxsulam, 12% of flufenacet, 2% of sodium lignin sulfonate, 5% of span-60 #, 5% of agro-emulsion 700#, 4% of sodium naphthalene sulfonate, 1% of magnesium aluminum silicate, 4% of glycerol and rapeseed oil, and the balance being the rest;
the preparation method comprises the following steps: same as in example 8.
Example 9:30% sulfentrazone-flufenacet water dispersible granule (5:1)
The formula comprises the following components: 25% of pyroxsulam, 5% of flufenacet, 3% of polycarboxylate GY-D06, 4% of sodium dodecyl sulfate, 1% of sodium alkyl sulfonate, 2% of sucrose and the balance of clay;
the preparation method comprises the following steps: according to the formula proportion of the embodiment, the active ingredients of the pyroxsulam and the flufenacet are added into a carrier, and a surfactant and other functional auxiliary agents are added into the carrier, mixed, subjected to jet milling, added with 25% of water, and then kneaded, granulated, dried and screened to prepare the water dispersible granule product.
Example 10:15% sulfentrazone-flufenacet water dispersible granule (2:1)
The formula comprises the following components: 10% of pyroxsulam, 5% of flufenacet, 3% of polycarboxylate T36, 4% of sodium dodecyl sulfate, 1% of sodium alkyl sulfonate, 2% of glucose and talcum powder are used for the balance;
the preparation method comprises the following steps: same as in example 9.
Example 11:40% sulfentrazone-flufenacet water dispersible granule (1:3)
The formula comprises the following components: 10% of pyroxsulam, 30% of flufenacet, 4% of alkyl naphthalene sulfonate, 3% of sodium lignin sulfonate, 2% of dibutyl naphthalene sulfonate, 2% of sodium naphthalene sulfonate, 4% of sodium carboxymethyl cellulose, 5% of sodium sulfate and white carbon black are used for the balance;
the preparation method comprises the following steps: same as in example 9.
Indoor Activity test
Example 15: the test is based on: ny/T1155.4-2006 "pesticide indoor bioassay test criteria herbicide section 4: activity measurement test Stem and leaf spray method.
Test targets were descurainia sophia [ Descuminia sophia (L.) webb.Ex Prantl ], myrtle [ Alopecurus aequalis Sobol ]
Test agent: 96.5% of the pyroxsulam technical and 98% of the flufenacet technical are provided by the research and development center of the Hehlier pharmaceutical company, inc.
Drug configuration: dissolving the raw material with dimethylformamide, diluting with 0.1% Tween 80 water solution, and preparing into 5 series of mass concentrations according to an equal ratio method for use.
The test method comprises the following steps: respectively sowing quantitative grass seeds into pots with the diameter of 9cm, culturing in an illumination incubator, and carrying out spray treatment when weeds grow to 1-3 leaf periods, wherein each pot is used for fixing 20 plants. After the treatment, the culture is continued in the greenhouse, the weed control effect of each treatment is observed periodically, and the fresh weight of each treated weed is recorded after 14 days.
Test treatment: each treatment was set up for 4 replicates and water control was set up.
Data investigation: calculating fresh weight control efficiency of each treatment 21 days after spraying treatment, and obtaining EC of each treatment through linear regression analysis between the control efficiency value and the concentration logarithmic value 50 And (5) calculating the co-toxicity coefficient by using a grand cloud Pei method.
The calculation formula is as follows:
fresh weight control = (fresh weight of control zone-fresh weight of treatment zone) ×100/fresh weight of control zone
Measured virulence index (ATI) =standard agent EC 50 X100/test agent EC 50
Drug combination Theoretical Toxicity Index (TTI) =toxicity index of agent a x percent of agent a+toxicity index of agent B x percent of agent B
Co-toxicity coefficient (CTC) of the blend= (measured toxicity index of blend/theoretical toxicity index of blend) ×100
CTC is less than or equal to 80, exhibiting antagonism; 80 < CTC < 120, expressed as additive effect; CTC is more than or equal to 120, and the synergy is shown.
The test results are shown in the following table:
table 1: combined action test of pyroxsulam and flufenacet mixed pair descurainia sophia
Table 2: combined action test of mixed pair of pyroxsulam and flufenacet on Myrtle
The indoor activity test shows that the mixed control of the pyripyroxsulam and the flufenacet has good indoor activity when used for controlling common weeds, namely, the descurainia sophia, in the wheat fields (see table 1 and table 2). When the mass ratio of the pyroxsulam to the flufenacet is 1:50-50:1, the CTC of the descurainia sophia and the descurainia sophia is more than 80, and the adding or synergistic effect is shown; when the mass ratio of the pyroxsulam to the flufenacet is 1:30-30:1, the indoor activity CTC of the descurainia sophia is more than 120, and the synergy is shown; when the mass ratio of the pyroxsulam to the flufenacet is 1:10-10:1, the indoor activity CTC of the descurainia sophia is more than 150, and the obvious synergistic effect is shown; when the mass ratio of the pyroxsulam to the flufenacet is 1:5-1:1, the indoor activity CTC of the descurainia sophia is more than 200, and the remarkable synergy is shown; when the mass ratio of the pyroxsulam to the flufenacet is 1:2, the indoor activity CTC of the descurainia sophia is larger than 264.76, and the synergistic effect is shown; when the mass ratio of the pyroxsulam to the flufenacet is 1:20-20:1, the indoor activity CTC of the alopecuroide is more than 120, and the synergistic effect is shown; when the mass ratio of the pyroxsulam to the flufenacet is 1:3-10:1, the indoor activity CTC of the alopecuroide is more than 150, and the obvious synergistic effect is shown; when the mass ratio of the pyroxsulam to the flufenacet is 1:1-3:1, the indoor activity CTC of the alopecuroide is more than 200, and the obvious synergistic effect is shown; when the mass ratio of the pyroxsulam to the flufenacet is 1:1, the indoor activity CTC of the alopecuroide is larger than 253.64, and the synergistic effect is shown; the preferred mass ratio of pyroxsulam to flufenacet is 1:30, 1:20, 1:10, 1:5, 1:3, 1:2, 1:1, 2:1, 3:1, 5:1, 10:1, 20:1, 30:1; further mass ratios of 1:5, 1:3, 1:2, 1:1, 2:1, 3:1 are preferred; even more preferably 1:2, 1:1.
Example 16: the pyroxsulam and the flufenacet are mixed to control the field efficacy of weeds in wheat fields.
Test agent: 20% of pyroxsulam-flufenacet dispersible oil suspending agent (1:1), 10% of pyroxsulam wettable powder and 30 g/L of flufenacet dispersible oil suspending agent.
Test crop: wheat (tainong 18).
And (3) test design: the test was run with a total of 6 treatments and with a water control, repeated 4 times per treatment and 20 square meters per repetition.
The application method comprises the following steps: and (3) stem and leaf spraying treatment, namely preparing liquid medicine according to the dosage of test design, and uniformly spraying the liquid medicine on wheat and weeds by adopting a backpack high-pressure sprayer.
The investigation method comprises the following steps: and (3) drug effect investigation, namely randomly selecting 4 points per cell by adopting an absolute value investigation method, wherein each point is 0.25 square meter, calculating the types, the plant numbers and the fresh weights of residual weeds in 1 square meter, and respectively calculating the plant number control effect and the fresh weight control effect.
Plant number control (%) = (number of weed plants in blank control area-number of weed plants in treated area)/(number of weed plants in blank control area×100)
Fresh weight control (%) = (fresh weight of weed in blank control area-fresh weight of weed in treated area)/(fresh weight of weed in blank control area×100)
Crop safety investigation: the leaf color, long phase and growth vigor of crops are observed and recorded while the pesticide effect is investigated, and the safety of the medicament to the crops is clear.
The test results are shown in Table 3:
table 3 compounded sulfentrazone and flufenacet for controlling weeds in wheat fields (40 days)
The test results showed (see table 3): the mixed pyroxsulam and flufenacet have good control effect on annual weeds in wheat fields, and when the dosage of the 20% pyroxsulam-flufenacet dispersible oil suspension is 20, 30, 40 and 50 g/mu respectively, the plant control effect is 87.3%, 90.3%, 93.3% and 95.6%, and the fresh weight control effect is 87.5%, 90.4%, 93.4% and 95.6%.
In the test process, the wheat is safe to winter wheat at the test dosage, and the abnormal development of winter wheat is not found.
As can be known from indoor activity tests and field efficacy tests, the weeding composition provided by the invention has the following beneficial effects: 1. the weeding composition provided by the invention has obvious synergistic effect within a certain proportion range, the control effect of the composition is obviously improved compared with that of a single agent, the dosage of pesticides is reduced, the times of pesticide use are reduced, the cost of pesticide use is reduced, and the adverse effect of pesticides on ecological environment is reduced. 2. The weeding composition provided by the invention has the advantages that the weeding spectrum is enlarged due to the combination of the two active ingredients, the weed problem can be solved by once administration, and the defects and limitations of single-dose use are overcome. 3. The weeding composition provided by the invention has the advantages of quick effect exertion, long lasting period, low use cost, convenience in use, time and labor saving, and great economic and social benefits in popularization and application.
Claims (8)
1. The use of a weeding composition containing pyroxsulam and flufenacet for preventing and controlling descurainia sophia or alopecuroide is characterized in that: the weeding composition comprises active ingredients of pyroxsulam and flufenacet, wherein the mass ratio of the active ingredients of pyroxsulam to flufenacet is 1:10-10:1.
2. Use according to claim 1, characterized in that the mass ratio of active ingredients pyroxsulam and flufenacet is 1:3-10:1.
3. The weeding composition according to claim 1, wherein the mass ratio of the active ingredients of pyroxsulam to flufenacet is 1:3-3:1.
4. Use according to claim 1, characterized in that the mass ratio of active ingredients pyroxsulam and flufenacet is 1:2 or 1:1.
5. Use according to claim 1, characterized in that the sum of the active ingredients pyroxsulam and flufenacet is 1% -90% of the composition.
6. Use according to claim 1, characterized in that the sum of the active ingredients pyroxsulam and flufenacet is 10% -50% of the composition.
7. The use according to claim 1, wherein the herbicidal composition is in the form of any one of dispersible tablets, granules, soluble powders, soluble granules, soluble tablets, water dispersible granules, wettable powders, micro-encapsulated granules, powders, macro-granules, water dispersible tablets, micro-encapsulated suspensions, dispersible liquids, emulsifiable concentrates, emulsion, oil emulsions, emulsion concentrates, aqueous emulsions, micro-emulsions, dispersible oil suspensions, oil dispersible powders, suspensions, suspoemulsions, soluble solutions, ultra-low volume liquids.
8. The use according to claim 7, wherein the formulation is any one of emulsifiable concentrates, wettable powders, water dispersible granules, suspensions, dispersible oil suspensions.
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| CN1761395A (en) * | 2003-03-13 | 2006-04-19 | 巴斯福股份公司 | Synergistically acting herbicidal mixtures |
| CN105613552A (en) * | 2016-03-15 | 2016-06-01 | 山东省农业科学院植物保护研究所 | Herbicide composition containing pyroxsulam and hingosulfuron-methyl |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1761395A (en) * | 2003-03-13 | 2006-04-19 | 巴斯福股份公司 | Synergistically acting herbicidal mixtures |
| CN105613552A (en) * | 2016-03-15 | 2016-06-01 | 山东省农业科学院植物保护研究所 | Herbicide composition containing pyroxsulam and hingosulfuron-methyl |
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