CN111328817B - A herbicidal composition containing metsulfuron-methyl and flumetsulam and its application - Google Patents
A herbicidal composition containing metsulfuron-methyl and flumetsulam and its application Download PDFInfo
- Publication number
- CN111328817B CN111328817B CN202010343339.7A CN202010343339A CN111328817B CN 111328817 B CN111328817 B CN 111328817B CN 202010343339 A CN202010343339 A CN 202010343339A CN 111328817 B CN111328817 B CN 111328817B
- Authority
- CN
- China
- Prior art keywords
- methyl
- flumetin
- active ingredient
- flumetsulam
- weight ratio
- Prior art date
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- 239000005584 Metsulfuron-methyl Substances 0.000 title claims 3
- RSMUVYRMZCOLBH-UHFFFAOYSA-N metsulfuron methyl Chemical group COC(=O)C1=CC=CC=C1S(=O)(=O)NC(=O)NC1=NC(C)=NC(OC)=N1 RSMUVYRMZCOLBH-UHFFFAOYSA-N 0.000 title claims 3
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- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 150000005693 branched-chain amino acids Chemical class 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 230000003915 cell function Effects 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 210000002390 cell membrane structure Anatomy 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- BEFDCLMNVWHSGT-UHFFFAOYSA-N ethenylcyclopentane Chemical compound C=CC1CCCC1 BEFDCLMNVWHSGT-UHFFFAOYSA-N 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 229940095686 granule product Drugs 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000010902 jet-milling Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000004292 methyl p-hydroxybenzoate Substances 0.000 description 1
- 235000010270 methyl p-hydroxybenzoate Nutrition 0.000 description 1
- LXCFILQKKLGQFO-UHFFFAOYSA-N methylparaben Chemical compound COC(=O)C1=CC=C(O)C=C1 LXCFILQKKLGQFO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-M naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-M 0.000 description 1
- URXNVXOMQQCBHS-UHFFFAOYSA-N naphthalene;sodium Chemical compound [Na].C1=CC=CC2=CC=CC=C21 URXNVXOMQQCBHS-UHFFFAOYSA-N 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005502 peroxidation Methods 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920000053 polysorbate 80 Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 235000010241 potassium sorbate Nutrition 0.000 description 1
- 239000004302 potassium sorbate Substances 0.000 description 1
- 229940069338 potassium sorbate Drugs 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 229940095574 propionic acid Drugs 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 238000001243 protein synthesis Methods 0.000 description 1
- 229950003776 protoporphyrin Drugs 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 235000009165 saligot Nutrition 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- ZLVSYODPTJZFMK-UHFFFAOYSA-M sodium 4-hydroxybenzoate Chemical compound [Na+].OC1=CC=C(C([O-])=O)C=C1 ZLVSYODPTJZFMK-UHFFFAOYSA-M 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 description 1
- 239000004299 sodium benzoate Substances 0.000 description 1
- 235000010234 sodium benzoate Nutrition 0.000 description 1
- 229960003885 sodium benzoate Drugs 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- JXKPEJDQGNYQSM-UHFFFAOYSA-M sodium propionate Chemical compound [Na+].CCC([O-])=O JXKPEJDQGNYQSM-UHFFFAOYSA-M 0.000 description 1
- 239000004324 sodium propionate Substances 0.000 description 1
- 235000010334 sodium propionate Nutrition 0.000 description 1
- 229960003212 sodium propionate Drugs 0.000 description 1
- LROWVYNUWKVTCU-STWYSWDKSA-M sodium sorbate Chemical compound [Na+].C\C=C\C=C\C([O-])=O LROWVYNUWKVTCU-STWYSWDKSA-M 0.000 description 1
- 235000019250 sodium sorbate Nutrition 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 235000010199 sorbic acid Nutrition 0.000 description 1
- 239000004334 sorbic acid Substances 0.000 description 1
- 229940075582 sorbic acid Drugs 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000007619 statistical method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229940124530 sulfonamide Drugs 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000014616 translation Effects 0.000 description 1
- 229940117013 triethanolamine oleate Drugs 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000000230 xanthan gum Substances 0.000 description 1
- 235000010493 xanthan gum Nutrition 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
- 229940082509 xanthan gum Drugs 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
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
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)
- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
本发明公开了一种含嗪草酸甲酯和唑嘧磺草胺的除草组合物及其应用，有效成分包含活性成分A和活性成分B，其中活性成分A为嗪草酸甲酯，活性成分B为唑嘧磺草胺。所述的活性成分A与活性成分B的重量比为50:1～1:50。本组合物可配制成农业上允许的剂型，优选为可分散油悬浮剂、乳油、悬浮剂、水分散粒剂。本发明组分合理，除草效果好，具有防效高、用药量低、杀草谱广、对作物安全等特点。The present invention discloses a herbicidal composition containing flumetin-methyl and flumetin-amid and its application, wherein the active ingredients include active ingredient A and active ingredient B, wherein active ingredient A is flumetin-methyl and active ingredient B is flumetin-amid. The weight ratio of active ingredient A to active ingredient B is 50:1 to 1:50. The composition can be formulated into a dosage form permitted in agriculture, preferably a dispersible oil suspension, emulsifiable concentrate, suspension, or water-dispersible granule. The present invention has reasonable components, good weed control effect, high prevention effect, low dosage, wide weed control spectrum, and safety to crops.
Description
Technical Field
The invention relates to the technical field of compound pesticides, in particular to a weeding composition containing methyl zincate and flumetsulam and application thereof.
Background
With the increase of corn planting area and the continuous improvement of field reseeding index, and the rough cultivation in partial areas, the weed hazard in the corn field is more serious. The occurrence of weeds in corn fields forms a serious threat to the production of corn in China, and the prevention and removal work of the prepared weeds is a key factor for guaranteeing the high and stable yield of the corn. At present, chemical agents are the main means and important measures for preventing and killing weeds in corn fields, and a large number of herbicides are widely applied to corn production. However, some residual periods are long and single for long-term use, so that yield loss can be caused for some sensitive corns, adverse effects can be caused on environment, underground water and corn aftercrop crops, and even the generation of weed drug resistance can be caused, so that the stability of the population structure of a weed community is influenced.
The oxazinate methyl belongs to a protoporphyrinogen oxidase inhibitor, and acts rapidly on the leaf surfaces of sensitive weeds to cause protoporphyrin accumulation, so that the peroxidation of cell membrane lipid is enhanced, and the cell membrane structure and cell function of the sensitive weeds are irreversibly damaged. The herbicide is mainly used for preventing and killing broadleaf weeds in corn fields and soybean fields, and has good effect on some broadleaf weeds which are difficult to prevent and kill. The chemical structural formula is as follows:
Flumetsulam belongs to triazolopyrimidine sulfonamides and is a typical acetolactate synthase inhibitor. Protein synthesis is hindered by inhibiting synthesis of branched-chain amino acids, and plants stop growing. Is suitable for preventing and controlling annual and perennial broadleaf weeds in corn fields. The chemical structural formula is as follows:
The herbicide composition has the advantages of expanding weed control spectrum, improving control effect, delaying weed resistance, saving time and labor. Through pesticide formula screening, the control effect can be effectively improved, the dosage is reduced, the cost is reduced, and the generation of drug resistance of weeds is delayed, thus being an important means of agricultural comprehensive treatment. The applicant has conducted intensive research on the formulation of the oxazin methyl and the flumetsulam, found that the oxazin methyl and the flumetsulam are mixed, and the oxazin methyl and the flumetsulam have synergism on preventing and killing weeds in corn fields in a certain mixing proportion range, and further studied, and completed the invention.
Disclosure of Invention
The invention aims to solve the problems of poor drug resistance and actual control effect of herbicide on farmland weeds in the prior art, and provides the weeding composition which has high efficiency, low toxicity, good quick acting performance and long lasting period and is beneficial to comprehensive treatment of farmland weeds.
It is another object of the present invention to use the composition for controlling weeds in farmlands, especially in corn fields.
The technical scheme of the invention is as follows:
A weeding composition containing oxaziclomefone and flumetsulam is characterized by comprising an active ingredient A and an active ingredient B, wherein the active ingredient A is oxaziclomefone, and the active ingredient B is flumetsulam.
Further, the weight ratio of the active ingredient A to the active ingredient B is 50:1-1:50.
Further, the weight ratio of the oxazin methyl to the flumetsulam is 10:1-1:25, and the preferable mass ratio is 5:1-1:15.
Further, the total weight percentage of the active ingredient A and the active ingredient B in the composition is 5% -95%, preferably 10% -90%.
Further, the herbicide composition further comprises an auxiliary agent selected from one or more of a solvent, a wetting agent, a dispersing agent, an emulsifying agent, a thickening agent, a disintegrating agent, an antifreezing agent, a defoaming agent, a preservative, a stabilizer, a binder, a dispersion medium, a carrier and a filler.
The solvent is selected from one or more of benzene, toluene, xylene, methanol, ethanol, N-butanol, trimethylbenzene, methyl oleate, N-dimethyl decanoamide, dimethyl sulfoxide, dimethylformamide, propylene carbonate, etc.;
The wetting agent is one or more selected from alkyl naphthalene sulfonate, alkyl phenol polyoxyethylene ether formaldehyde condensate sulfate, alkyl phenol polyoxyethylene ether phosphate, phenethyl phenol polyoxyethylene ether phosphate, alkyl sulfate, alkyl sulfonate, naphthalene sulfonate, fatty alcohol ethoxylate and the like;
the dispersing agent is selected from one or more of polycarboxylate (TERSPERSE 2700, T36, GY-D06, etc.), 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, etc.;
The emulsifier is selected from one or more of fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene polyoxypropylene ether, castor oil ethylene oxide adduct and its derivatives, polyoxyethylene polyoxypropylene block copolymer, and calcium dodecyl benzene sulfonate, and the emulsifier is selected from BY (castor oil polyoxyethylene ether) series emulsifier (BY-110, BY-125, BY-140), pesticide emulsion 700# (alkylphenol formaldehyde polyoxyethylene ether), pesticide emulsion 2201, span-60# (sorbitan monostearate), tween-60# (sorbitan monostearate polyoxyethylene ether), pesticide emulsion 1601# (phenethyl phenol polyoxyethylene polyoxypropylene ether), etc.;
the thickener is one or more of xanthan gum, white carbon black, polyvinyl alcohol, bentonite, magnesium aluminum silicate, sodium alginate, etc.;
The disintegrating agent is selected from one or more of sodium sulfate, ammonium chloride, aluminum chloride, ammonium sulfate, sodium sulfate, polyvinylpyrrolidone, starch or its derivative, bentonite, etc.;
the antifreezing agent is one or more selected from ethylene glycol, propylene glycol, glycerol, urea, inorganic salts such as sodium chloride, etc.;
the defoamer is one or more selected from C 10-C20 saturated fatty acid compounds, silicone oil, silicone compounds, C 8-C10 fatty alcohol and the like;
The preservative is one or more selected from sodium propionate, propionic acid, sorbic acid, sodium sorbate, potassium sorbate, benzoic acid, sodium benzoate, sodium p-hydroxybenzoate, methyl p-hydroxybenzoate, etc.;
The stabilizer is one or more selected from bentonite, attapulgite, white carbon black, talcum powder, disodium hydrogen phosphate, oxalic acid, succinic acid, adipic acid, borax, 2, 6-di-tert-butyl p-methylphenol, triethanolamine oleate, epoxidized vegetable oil, montmorillonite, starch and the like;
the binder is one or more of starch, glucose, polyvinyl alcohol, polyethylene glycol, sodium carboxymethyl cellulose, sucrose and the like;
The dispersion medium is one or more selected from soybean oil, rapeseed oil, wheat oil, methyl oleate, diesel oil, engine oil, mineral oil and the like;
the carrier is selected from one or more of ammonium salt, ground natural mineral, ground artificial mineral, silicate, resin, wax, solid fertilizer, water, organic solvent, mineral oil, vegetable oil, etc.;
the filler is selected from one or more of ammonium sulfate, urea, sucrose, glucose, diatomite, kaolin, white carbon black, light calcium carbonate, talcum powder, attapulgite, clay and the like.
Further, the herbicide composition is any one of powder, granules, soluble powder, soluble granules, suspending agents, dispersible oil suspending agents, water aqua, oil agents, microcapsule suspending agents, emulsifiable concentrates, aqueous emulsion, wettable powder, water dispersible granules, microemulsion and soluble liquid;
the preferable dosage form is any one of dispersible oil suspending agent, emulsifiable concentrate, wettable powder and water dispersible granule.
Further, the composition is a dispersible oil suspending agent, and the dispersible oil suspending agent comprises, by weight, 0.1-100 parts of an active ingredient A, 0.1-100 parts of an active ingredient B, 1-10 parts of a wetting agent, 1-10 parts of a thickening agent, 1-5 parts of a stabilizing agent, 0-10 parts of an antifreezing agent and 10-80 parts of a dispersing medium.
The dispersible oil suspending agent has the advantages of small particle size, high suspension rate, good dispersibility, good adhesion, good affinity to a target and the like, and has strong spreading and adhesion on the plant surface and rain wash resistance. The dispersible oil suspending agent refers to a stable liquid-solid system which is high in dispersion, high in suspension and capable of flowing, wherein one or more pesticide active ingredients (at least one of the active ingredients is solid) are in a non-aqueous dispersion medium, and the active ingredients are uniformly dispersed in an oil phase by grinding through a sand mill by virtue of auxiliary agents. The dispersible oil suspending agent consists of an active ingredient, a wetting agent, a thickening agent, a stabilizing agent, a dispersing medium, an antifreezing agent and the like.
Further, the composition is an emulsifiable concentrate, and the emulsifiable concentrate comprises the following components and the content of the emulsifiable concentrate are preferably 0.1-100 parts of active ingredient A, 0.1-100 parts of active ingredient B, 0.1-20 parts of emulsifying agent, 0.1-5 parts of stabilizing agent and 10-100 parts of solvent;
the emulsifiable concentrate is a liquid prepared by dissolving high-concentration active ingredients in a solvent and adding an emulsifier. The emulsifiable concentrate mainly comprises active ingredients, solvents, emulsifying agents, stabilizing agents and the like.
Further, the composition is wettable powder, and the wettable powder comprises the components and the content of 0.1-100 parts of active ingredient A, 0.1-100 parts of active ingredient B, 1-20 parts of dispersing agent, 1-10 parts of wetting agent and 10-100 parts of filler;
Wettable powders are formulations which are uniformly dispersible in water and which contain, in addition to the active and inert substances, a certain amount of anionic or nonionic surfactant. The wettable powder does not use solvents or emulsifying agents, is safer to plants, is not easy to produce phytotoxicity and is safe to the environment. The wettable powder mainly comprises active ingredients, dispersing agents, wetting agents, fillers and the like.
Further, the composition is a water dispersible granule, and the water dispersible granule comprises the following components and the content of preferably 0.1-100 parts of an active ingredient A, 0.1-100 parts of an active ingredient B, 1-15 parts of a dispersing agent, 1-10 parts of a wetting agent, 1-15 parts of a disintegrating agent, 1-10 parts of a binder, 0.1-5 parts of a defoaming agent and 10-100 parts of a filler;
the water dispersible granule is prepared by re-forming wettable powder or suspending agent into water dispersible granule, mixing the composition with proper surfactant and inert substance (kaolin, diatomite and Tao Tulei) powder according to a certain proportion to form a mixture, and granulating by a fluidized bed granulation or spray granulation or pan granulation method. The preparation has good fluidity, convenient use, no dust flying, safety and reliability. The water dispersible granule mainly comprises active ingredients, dispersing agents, wetting agents, disintegrating agents, binders, fillers, defoamers and the like.
The invention also provides the use of a herbicidal composition as described above for combating unwanted plants.
The invention also provides a method for controlling unwanted plants by using the weeding composition;
further, applying the above herbicidal composition to the growing locus and/or leaves and/or stems of unwanted plants;
Further, the field of growth of the unwanted plants is corn fields;
Further, the unwanted plants are broadleaf weeds in the corn fields, and the broadleaf weeds in the corn fields are one or more of abutilon, amaranth, quinoa, black nightshade, acalypha australis and chickweed.
The invention has the beneficial effects that:
1) The invention has reasonable components, good weeding effect and low medication cost, and the activity and weeding effect of the herbicide composition in a certain proportion range exceed the superposition of the components, has obvious synergistic effect, can enlarge the weeding spectrum, improve the prevention effect and delay the resistance, has good safety to crops and meets the safety requirement of pesticide preparations.
2) The weeding composition has lasting efficacy, can be applied at one time, and can control various weed hazards in the growing period of corn fields. The composition has complementary advantages of all components, and has good control effect on broadleaf weeds such as abutilon, amaranthus retroflexus, quinoa, black nightshade, copperleaf herb, chickweed and the like in corn fields.
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 of formulation examples
The present invention will be further described with reference to examples.
Preparation example 1:20% methyl zincate flumetsulam dispersible oil suspension (1:3)
The formula comprises 5% of oxazin methyl, 15% of flumetsulam, 2% of sodium polycarboxylate, 4% of agricultural emulsion 1601#, 3% of tween-60#, 4% of agricultural emulsion 2201, 1% of sodium alkyl sulfate, 0.5% of bentonite, 5% of propylene glycol and the balance of soybean oil;
the preparation method comprises the steps of sequentially placing the effective components of the oxazin methyl, the flumetsulam, the surfactant and other functional auxiliary agents into a reaction kettle according to the formula proportion, adding oil, uniformly mixing, shearing at a high speed, performing wet sanding, and finally homogenizing and filtering to obtain a suspending agent product.
PREPARATION EXAMPLE 2 14% oxaziclomefone-flumetsulam emulsifiable concentrate (1:6)
The formula comprises 2% of oxaziclomefone, 12% of flumetsulam, 10% of dimethyl sulfoxide, 5% of fatty alcohol polyoxyethylene ether, 9% of alkylphenol polyoxyethylene polyoxypropylene ether, 1% of calcium dodecyl benzene sulfonate and the balance of methyl oleate;
the preparation method comprises the steps of adding the effective components of the methyl zincate and the flumetsulam into a carrier according to the formula proportion of the embodiment, adding the surfactant and other functional additives into the carrier, and uniformly stirring and mixing in a stirring and mixing kettle to obtain the emulsifiable concentrate product.
Preparation example 3 30% oxazin methyl, flumetsulam wettable powder (1:2)
The formula comprises 10 percent of oxazin methyl, 20 percent of flumetsulam, 5 percent of alkyl naphthalene formaldehyde condensate calcium sulfonate, 6 percent of alkylphenol polyoxyethylene ether sodium sulfonate, 3 percent of alkyl naphthalene sodium sulfonate, 5 percent of talcum powder and diatomite, and the balance of the components;
the preparation method comprises the steps of adding the effective components of the methyl zincate and the flumetsulam into a carrier according to the formula proportion of the embodiment, adding the surfactant and other functional additives into the carrier, mixing the components, and carrying out air flow crushing and mixing to obtain the wettable powder product.
Preparation example 4:55% oxaziclomefone-flumetsulam water-dispersible granule (1:10)
The formula comprises 5% of oxazin methyl, 50% of flumetsulam, 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 steps of adding the effective components of methyl zincate and flumetsulam into a carrier according to the formula proportion of the embodiment, adding a surfactant and other functional additives into the carrier, mixing, adding 10-25% of water after jet milling, and then kneading, granulating, drying and screening to obtain the water dispersible granule product.
Preparation example 5:40% methyl oxazin-flumetsulam dispersion oil suspension (1:7)
The formula comprises 5% of oxazin methyl, 35% of flumetsulam, 5% of sodium polycarboxylate, 5% of agricultural emulsion 1601#, 2% of tween-60#, 4% of agricultural emulsion 2201, 0.8% of alkyl sulfonate, 0.5% of bentonite, 5% of ethylene glycol and the balance of rapeseed oil;
the preparation method comprises the steps of sequentially placing the effective components of the oxazin methyl, the flumetsulam, the surfactant and other functional auxiliary agents into a reaction kettle according to the formula proportion, adding oil, uniformly mixing, shearing at a high speed, performing wet sanding, and finally homogenizing and filtering to obtain a suspending agent product.
Indoor Activity measurement example
Example 6 Combined action of herbicidal compositions containing Methanoxazin and flumetsulam on common weeds
To further understand the type of combined action of the compounded herbicidal composition on weeds, the inventors conducted an indoor formulation screening test on the compounded composition. The herbicidal activity of the compositions with different proportions and single dose is compared by a greenhouse potting method activity measurement test. The specific test is based on NY/T1155.4-2006 "spray method for testing stem and leaf of test for activity determination of biological assay in pesticide laboratory" NY/T1155.7-2006 "combined action determination of biological assay in pesticide laboratory" rule compounding.
The target to be tested is quinoa and acalypha australis.
The test agent is 95% of oxaziclomefone original drug and 97% of flumetsulam original drug, and the original drug is provided by research and development center of the Heilier pharmaceutical company Limited.
The preparation method comprises accurately weighing a certain mass of oxazin methyl and flumetsulam crude drug, dissolving the crude drug with DMF, diluting with 0.1% Tween 80 aqueous solution, and preparing into 5 series of mass concentrations according to an equal ratio method for use.
The stem leaf spraying method is to fill quantitative soil in a plastic pot with the height of 7cm and the diameter of 9cm, seed 15-20 seeds of weeds to be tested are sowed in the plastic pot, the plastic pot is covered with fine soil for 0.5-2 cm and then is placed in a greenhouse for cultivation, thinning and setting are carried out after the weeds emerge, the density of the weeds is ensured to be consistent, and the stem leaves are sprayed until the weeds grow to 2-4 leaf stages. Each treatment was repeated 4 times and a treatment without agent was set as a blank. Naturally air-drying the liquid medicine on the surface of the tested material after treatment, and transferring the tested material into a greenhouse for conventional culture. After treatment, the plant is moved into a greenhouse for conventional culture, and water is supplemented by an infiltrating irrigation mode at the bottom of the pot.
14D after treatment, the fresh weight control effect of each treated weed was investigated. According to the investigation data, the fresh weight control effect of each treatment is calculated according to the following formula, wherein the unit is percentage (%):
The evaluation method of the combined action type of the active compositions is as follows:
The Gowing method and the Gowing method are combined action type evaluation methods for herbicide mixture proposed in 1960. The specific steps are that firstly, the prevention effect of a single agent and a mixed agent on target weeds is measured, the theoretical prevention effect of the mixed agent is calculated through the actual measurement prevention effect of the single agent, and then the combined action type is evaluated by comparing the theoretical prevention effect with the actual measurement prevention effect of the mixed agent.
Fresh weed weight control effect (E)% = [ (fresh weed weight in blank area-fresh weed weight in control area)/fresh weed weight in blank area ] ×100
The theoretical fresh weight inhibition rate (E 0)% = weed fresh weight inhibition rate of compound a at the amount of P + weed fresh weight inhibition rate of compound B at the amount of Q- (weed fresh weight inhibition rate of compound a at the amount of P x weed fresh weight inhibition rate of compound B at the amount of Q)/100;
Evaluation criteria for combined action of compounding agents:
When E-E 0 is more than 10%, the synergistic effect of the mixed herbicide is shown, when E-E 0 is less than-10%, the antagonistic effect of the mixed herbicide is shown, when E-E 0 value is +/-10%, the additive effect of the mixed herbicide is shown, and in the formula, E represents the actual control% of each treatment.
As shown in Table 1, each single dose and compound dose of the oxaziclomefone and the flumetsulam show higher herbicidal activity on the caltrops, the actual measurement prevention effect of 10g/hm 2 of the oxaziclomefone is 65.59%, and the actual measurement prevention effect of 50g/hm 2 of the flumetsulam is 55.46%. The oxazin methyl ester and the flumetsulam are compounded to generate an addition or synergistic effect on the calfskin, and the synergistic effect is shown by 2+10 (1:5), 2+20 (1:10), 2+40 (1:20), 4+20 (1:5), 4+40 (1:10), 6+20 (3:10), 6+40 (3:20) and 6+50 (3:25).
As shown in Table 2, each single dose and the compound of the methyl oxazin and the flumetsulam show higher herbicidal activity to the acalypha australis, the actual control effect of 10g/hm 2 of the methyl oxazin is 65.62%, and the actual control effect of 50g/hm 2 of the flumetsulam is 51.00%. The compound of the oxazin methyl and the flumetsulam has addition or synergism on acalypha australis, and the synergistic effect is shown by 2+20 (1:10), 2+30 (1:15), 6+30 (1:5), 6+40 (3:20), 8+30 (4:15) and 8+40 (1:5).
The actual measurement prevention effect (E) of the mixed use of the oxazin methyl and the flumetsulam on the quinoa and the acalypha australis is mostly larger than the theoretical prevention effect (E 0), the value of part of the mixture ratio (E-E 0) is larger than 10%, the combined action type of the oxazin methyl and the flumetsulam is synergistic action, the value of the other rest mixture ratio E-E 0 is +/-10%, and the combined action type of the oxazin methyl and the acalypha australis is additive action. The weed control effect of the mixed oxaziclomefone and flumetsulam is higher than that of two single agents, the weeding activity is improved, and the combined action type of the two mixed agents is synergistic action and addition action.
TABLE 1 determination of the Combined action of methyl oxazin and flumetsulam and their blends on quinoa
TABLE 2 Combined action of methyl oxazin and flumetsulam and mixtures thereof on acalypha australis
Field efficacy test
Example 7 efficacy test of methyl oxazin and flumetsulam against weeds in corn fields in field
As can be seen from tables 1 and 2, the combined action of the oxaziclomefone and the flumetsulam is an addition action or a synergistic action, and according to the combined action data, the effect of the oxaziclomefone and the flumetsulam in the field can be expected to have good prevention effect.
The test is carried out according to GB/T17980.42-2004 "pesticide field efficacy test criterion (one) 42 nd section: herbicide control of corn weeds".
The test agent comprises 20% of oxaziclomefone and flumetsulam dispersible oil suspending agent, 14% of oxaziclomefone and flumetsulam emulsifiable concentrate, 30% of oxaziclomefone and flumetsulam wettable powder, 55% of oxaziclomefone and flumetsulam water dispersible granule and 40% of oxaziclomefone and flumetsulam dispersible oil suspending agent;
the control medicament comprises 5% of methyl oxazin emulsifiable concentrate and 80% of flumetsulam water dispersible granule.
Test treatment, namely, different cells to be tested are arranged in a random block, the cell area is 30m 2, and the test is repeated for 4 times.
The application method comprises applying the medicine 1 time after seedling in corn field by stem and leaf spraying.
Dosage used:
Table 3 field test dose statistics
| Sequence number | Medicament treatment | Dosage g.i./hm 2 |
| 1 | 20% Oxaziclomefone-flumetsulam dispersible oil suspension (1:3) | 20 |
| 2 | 14% Oxazin methyl, flumetsulam emulsifiable concentrate (1:6) | 20 |
| 3 | 30% Oxazin methyl, flumetsulam wettable powder (1:2) | 20 |
| 4 | 55% Oxaziclomefone, flumetsulam water-dispersible granule (1:10) | 20 |
| 5 | 40% Oxaziclomefone methyl and flumetsulam dispersion oil suspension (1:7) | 20 |
| 6 | 5% Oxazin methyl ester emulsifiable concentrate | 10 |
| 7 | 80% Flumetsulam water-dispersible granule | 60 |
| 8 | Clear water control | / |
Experimental investigation and safety observations basal investigation, the effect of each treatment agent on corn growth after 10d of continuous observation before application (period of growth of weed species, and percentage distribution of main weeds), and investigation 2 times 15 and 30 days after application. Randomly selecting 0.25-1m 2 square blocks for each cell, sampling 3-4 plants for investigation, investigating the plant number of residual weeds, and observing whether the plants have safety problems.
The control effect calculating method comprises the following steps:
Plant control (%) = (number of blank space plants-number of treated space plants)/number of blank space plants×100
The main weeds in the test fields are annual broadleaf weeds such as amaranth, quinoa, abutilon, acalypha australis and the like.
And calculating the prevention effect according to the formula, and carrying out significance analysis by using a new complex polar difference method.
Crop investigation, namely observing whether the pesticide has phytotoxicity to corn, recording the type and degree of the phytotoxicity, and grading the phytotoxicity of each district according to a phytotoxicity grading method;
the corn grows normally, and no victim symptoms exist;
2, the corn is slightly phytotoxicity, and the phytotoxicity is less than 10%;
Grade 3, the pesticide injury in corn can be recovered later, and the yield is not affected;
grade 4, the corn has heavier phytotoxicity, is difficult to recover, and causes yield reduction;
grade 5, serious phytotoxicity of corn, inability to recover, and obvious yield reduction or absolute yield.
Meanwhile, the phytotoxicity symptoms of the corn are accurately described, and the growth conditions of the corn in all cases are recorded.
Results and analysis
TABLE 4 prevention and removal effects of methyl oxazin and flumetsulam on annual broadleaf weeds in corn fields
Note that the control effect in the above table is overall control effect, with capital letters representing a very significant level of 1% difference and lowercase letters representing a significant level of 5% difference.
The biological statistical analysis method adopts Duncan's new complex polar Difference (DMRT) method.
According to Table 4, it can be seen that the prevention effect of the 20% oxazin methyl/flumetsulam dispersible oil suspension, the 14% oxazin methyl/flumetsulam emulsifiable oil, the 30% oxazin methyl/flumetsulam wettable powder, the 55% oxazin methyl/flumetsulam water dispersible granule and the 40% oxazin methyl/flumetsulam dispersible oil suspension is above 85% after each test treatment, and the 14% oxazin methyl/flumetsulam emulsifiable oil has a prevention effect of 93.25%, and shows a higher prevention effect.
Over time, the prevention effect of each compound medicament strain is over 90 percent in 30 days after medicament, the prevention effect of 5 percent of oxaziclomefone missible oil strain is 76.62 percent, the prevention effect of 80 percent of flumetsulam water dispersible granule is 60.53 percent, and the obvious difference exists between each compound medicament and the control medicament, namely 5 percent of oxaziclomefone missible oil and 80 percent of flumetsulam water dispersible granule at the level of 0.01 and 0.05.
Table 5 corn field test safety statistics
| Test agent | Effective amount g a.i./hm 2 | Corn phytotoxicity grade condition record of each cell |
| 20% Oxaziclomefone-flumetsulam dispersible oil suspension (1:3) | 20 | 1 Grade, 1 grade grade 1, grade 1 |
| 14% Oxazin methyl, flumetsulam emulsifiable concentrate (1:6) | 20 | 1 Grade, 1 grade grade 1, grade 1 |
| 30% Oxazin methyl, flumetsulam wettable powder (1:2) | 20 | Level 1, level 2, level 1 |
| 55% Oxaziclomefone, flumetsulam water-dispersible granule (1:10) | 20 | 1 Grade, 1 grade grade 1, grade 1 |
| 40% Oxaziclomefone methyl and flumetsulam dispersion oil suspension (1:7) | 20 | 1 Grade, 1 grade grade 1, grade 1 |
| 5% Oxazin methyl ester emulsifiable concentrate | 10 | 1 Grade, 1 grade grade 1, grade 1 |
| 80% Flumetsulam water-dispersible granule | 60 | Level 1, level 2, level 1 |
Safety investigation, namely, during the test period, 60g a.i./hm 2 treatment area of 80% flumetsulam water dispersible granule has one area with slight phytotoxicity to corn, but the phytotoxicity is less than 10%,30% of oxazin methyl-flumetsulam wettable powder (1:2) treatment area has one area with the safety level of 2, the phytotoxicity is recovered in the later growth process, and other treatments are safe to the corn growth and have no phytotoxicity phenomenon. After 21d observation after the medicine, the corns in each cell normally grow, and obvious phytotoxicity symptoms are avoided, so that the corn-killing agent is safe for corns.
In conclusion, the composition is compounded by adopting two active ingredients, the control effect and the activity level of the composition exceed the superposition of the components, and compared with the existing single preparation, the composition has obvious synergistic herbicidal effect, obvious synergistic effect, can delay resistance, reduce the residual quantity of the preparation, has no pollution to crops, has good safety, and can meet the requirements of current agricultural production, especially the corn planting process on herbicides.
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