CN111296459A - Weeding composition containing cyclosulfamuron and application thereof - Google Patents
Weeding composition containing cyclosulfamuron and application thereof Download PDFInfo
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- CN111296459A CN111296459A CN202010290202.XA CN202010290202A CN111296459A CN 111296459 A CN111296459 A CN 111296459A CN 202010290202 A CN202010290202 A CN 202010290202A CN 111296459 A CN111296459 A CN 111296459A
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- cyclosulfamuron
- pyribenzoxim
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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
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/54—1,3-Diazines; Hydrogenated 1,3-diazines
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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
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
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Abstract
The invention discloses a weeding composition containing cyclosulfamuron and application thereof. The mass ratio of the active ingredient A to the active ingredient B of the composition is 1:50-50: 1. The composition can be prepared into agriculturally allowable dosage forms, and preferably missible oil, suspending agents, aqueous emulsion, wettable powder, water dispersible granules and dispersible oil suspending agents. The invention has reasonable components, good weeding effect in paddy fields, and activity which is not simple superposition of the components, and has the advantages of low dosage, wide weed control spectrum, safety to crops and the like compared with the existing single preparation.
Description
Technical Field
The invention relates to a weeding composition and application thereof, in particular to a weeding composition containing cyclosulfamuron and application thereof, and belongs to the technical field of pesticide compounding.
Background
The CAS number of the Cyclosulfamuron is 136849-15-5, belongs to sulfonylurea herbicides, and is an inhibitor of acetolactate synthase (ALS). The cyclosulfamuron can be absorbed by the roots and the leaves of the weeds and is conducted in the plants, the weeds stop growing, the leaves are green, and the weeds are generally completely withered after several weeks. The herbicide has high efficiency and low toxicity, is mainly used for preventing and killing annual and perennial broadleaf weeds and sedge weeds, has activity on gramineous weeds, but cannot completely prevent and kill the gramineous weeds. Is mainly used for preventing and killing broadleaf weeds in the pre-emergence and post-emergence application of rice, wheat, barley and the like.
Pyribenzoxim (Pyribenzoxim) CAS number 168088-61-7 is a novel oxime ester compound, a broad-spectrum selective post-emergence herbicide. The action mechanism is similar to sulfonylurea and imidazolinone herbicides, and both belong to acetolactate synthase (ALS) inhibitors. Has selectivity to rice and wheat, has super-high-efficiency postemergence herbicidal activity and no preemergence herbicidal activity, and is used for preventing and killing various weeds such as barnyard grass, alopecurus macrorhizus, polygonum hydropiper and the like. But the weeding speed is slow, the weeds can be inhibited from growing after the application, the weeds are finally died, and the chemical structural formula is as follows:
pyrazosulfuron-ethyl (Pyrazosulfuron-ethyl) is a sulfonylurea herbicide widely used at present, and inhibits the normal mitosis of cells by inhibiting the biosynthesis of acetolactate synthase, essential leucine and amino acid valine in plants, thereby finally achieving the aim of weeding. The herbicide is systemic herbicide, and is absorbed by roots and leaves of plants and conducted to meristematic tissue; the method is mainly used for direct seeding or transplanting annual or perennial broadleaf weeds, nutgrass flatsedge and the like in the paddy field; the pyrazosulfuron-ethyl is absorbed by rice and then undergoes carboxylation reaction in vivo, and is rapidly degraded into inactive compounds, so that the pyrazosulfuron-ethyl is safe to rice. The chemical structural formula is as follows:
the herbicide variety containing a single active component has defects of different degrees in weed control, and after continuous use, weeds are easy to generate drug resistance, so that the problems of narrow weed control spectrum, environmental pollution and the like occur. The reasonable compounding of the herbicide is an effective method for improving the preventing and killing effect, expanding the weed control spectrum, delaying the drug resistance of weeds, reducing the environmental pollution and reducing the use cost and the herbicide residue. After the test of the applicant, the result shows that the mixing of the cyclosulfamuron, the pyribenzoxim and the pyrazosulfuron-ethyl has obvious synergistic effect on various dicotyledonous weeds such as eclipta prostrata, monochoria vaginalis and rhizoma pleionis and monocotyledonous weeds such as barnyard grass, moleplant seed, rice leersia and cyperus rotundus, the control effect on weeds in paddy fields is obviously improved, the weed control spectrum is expanded, the drug dosage is reduced, the control cost is reduced, and a series of problems caused by long-term use of a single-component herbicide are solved.
And the herbicide containing any one of the cyclosulfamuron, the pyribenzoxim and the pyrazosulfuron-ethyl for preventing and killing the weeds in the paddy field is not reported after retrieval.
Disclosure of Invention
The invention aims to provide the weeding composition containing the cyclosulfamuron, which has the advantages of reasonable components, low medication cost, obvious synergistic effect, good weeding effect, wide weed control spectrum and safety to crops.
Another object of the present invention is to provide a formulation of a herbicidal composition containing cyclosulfamuron, and its use for controlling weeds in paddy fields.
The technical scheme of the invention is as follows:
the weeding composition containing the cyclosulfamuron is characterized in that the effective components comprise an active component A and an active component B, wherein the active component A is the cyclosulfamuron, and the active component B is any one of pyribenzoxim and pyrazosulfuron-ethyl;
furthermore, the weight ratio of the active ingredient A to the active ingredient B of the weeding composition is 1:50-50: 1;
furthermore, the weight ratio of the active ingredient A to the active ingredient B of the weeding composition is 1:20-20: 1;
further, the mass ratio of the active ingredients of the cyclosulfamuron to the pyribenzoxim is 1:10-10: 1; preferably, the mass ratio of the cyclosulfamuron to the pyribenzoxim is 1:5-5: 1.
Further, the mass ratio of the active ingredients of the cyclosulfamuron to the pyrazosulfuron-ethyl is 1:5-15: 1; preferably, the mass ratio of the cyclosulfamuron to the pyrazosulfuron-ethyl is 1:3-8: 1.
Further, the preferable mass ratio of the cyclosulfamuron to the pyribenzoxim is 1:1, 1:2, 3:1 and 5: 1; the preferable mass ratio of the cyclosulfamuron to the pyrazosulfuron-ethyl is 1:2, 1:1, 3:1, 5:1 and 6: 1;
further, the herbicidal composition according to claim 1, characterized in that the sum of the mass of the active ingredients a and B is 5% to 90%, preferably 10% to 60% of the composition.
The invention provides a weeding composition containing an active ingredient A and an active ingredient B, which can be prepared into a preparation formulation acceptable for agricultural chemicals according to a method known by a person skilled in the art, and comprises a solid preparation and/or a liquid preparation;
the solid preparation is any one of powder, granules, wettable powder, water dispersible granules, soluble powder and soluble granules, and the liquid preparation is any one of missible oil, suspending agent, aqueous solution, aqueous emulsion, microemulsion and soluble solution;
furthermore, the preparation formulation is missible oil, a suspending agent, an aqueous emulsion, wettable powder, water dispersible granules and a dispersible oil suspending agent.
Pesticide adjuvant (pesticide adjuvant) is a general term for other auxiliary substances used in the processing or application of pesticide formulations, in addition to the active ingredient of pesticides. The auxiliary agent is various additives necessary for processing raw medicines into preparations, generally has no biological activity, but plays an important role in preparation processing.
Furthermore, the main components of the missible oil are raw pesticide, solvent, emulsifier, stabilizer and the like. Specifically, a solvent such as one or more of trimethylbenzene, methyl oleate, N-dimethyldecanamide, dimethyl sulfoxide, propylene carbonate, and the like; emulsifier such as fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene polyoxypropylene ether, castor oil ethylene oxide adduct and its derivatives, polyoxyethylene polyoxypropylene block copolymer, calcium dodecylbenzene sulfonate, etc.; stabilizers such as one or more of disodium hydrogen phosphate, oxalic acid, succinic acid, oxalic acid, and the like;
further, the suspending agent mainly comprises raw pesticide, a dispersing agent, a wetting agent, a thickening agent, an antifreezing agent, water and the like. Specifically, a dispersant such as one or more of polycarboxylate, lignosulfonate, alkylnaphthalene sulfonate (diffuser NNO), and the like; wetting agents such as one or more of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkylphenol polyoxyethylene ether phosphate, phenethylphenol polyoxyethylene ether phosphate, alkyl sulfate, alkyl sulfonate, naphthalene sulfonate, and the like; thickening agent such as one or more of white carbon black, polyvinyl alcohol, bentonite, magnesium aluminum silicate, etc.; antifreeze agents such as one or more of alcohols, alcohol ethers, chlorinated hydrocarbons, inorganic salts and the like; the carrier is deionized water;
further, the aqueous emulsion mainly comprises raw medicines, a solvent, an emulsifier, an antifreezing agent, water and the like. Specifically, a solvent such as one or more of benzene, toluene, xylene, durene, methanol, ethanol, isopropanol, n-butanol, dimethyl sulfoxide, dimethylformamide, cyclohexanone, alkylene carbonate, diesel oil, mineral spirits, vegetable oil derivatives, water, and the like; emulsifiers such as one or more of calcium dodecylbenzenesulfonate, alkylphenol formaldehyde resin polyoxyethylene ether, phenethylphenol polyoxyethylene polyoxypropylene ether, fatty alcohol ethylene oxide-propylene oxide copolymer, styrylphenol polyoxyethylene ether, castor oil polyoxyethylene ether, alkylphenol ether phosphate, and the like; antifreeze agents such as one or more of alcohols, alcohol ethers, chlorinated hydrocarbons, inorganic salts and the like;
furthermore, the wettable powder mainly comprises raw pesticide, a dispersing agent, a wetting agent, a filler and the like. Specifically, a dispersing agent such as one or more of polycarboxylate, lignosulfonate, 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 carbonate, talcum powder, attapulgite, pottery clay and the like;
furthermore, the water dispersible granule mainly comprises raw pesticide, a dispersing agent, a wetting agent, a disintegrating agent, a binder, a filler and the like. Specifically, a dispersant such as one or more of polycarboxylic acid salts, lignosulfonates, alkylnaphthalenesulfonates, and the like; wetting agents such as one or more of alkyl sulfates, alkyl sulfonates, naphthalene sulfonates (MF, CNF), and the like; disintegrating agent such as one or more of ammonium sulfate, sodium sulfate, aluminum chloride, sodium chloride, polyvinylpyrrolidone, starch or its derivatives, bentonite, etc.; binder such as one or more of starch, glucose, polyvinyl alcohol, polyethylene glycol, sodium carboxymethylcellulose, sucrose, etc.; the filler is one or more of diatomite, kaolin, white carbon black, light calcium carbonate, talcum powder, attapulgite, pottery clay and the like.
Further, the dispersible oil suspending agent mainly comprises a technical material, a dispersing agent, an emulsifying agent, a wetting agent, a thickening agent, an antifreezing agent, a dispersion medium and the like. Specifically, a dispersant such as one or more of polycarboxylate, lignosulfonate, alkylnaphthalene sulfonate (diffuser NNO), and the like; the emulsifier is one or more of BY (castor oil polyoxyethylene ether) series emulsifiers (BY-110, BY-125 and BY-140), Nongru 700# (alkylphenol formaldehyde resin polyoxyethylene ether), Nongru 2201, span-60 # (sorbitan monostearate), Tween-60 # (sorbitan monostearate polyoxyethylene ether), Nongru 1601# (phenethylphenol polyoxyethylene polyoxypropylene ether) and the like; wetting agents such as one or more of alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkylphenol polyoxyethylene ether phosphate, phenethylphenol polyoxyethylene ether phosphate, alkyl sulfate, alkyl sulfonate, naphthalene sulfonate, and the like; thickening agent such as one or more of white carbon black, polyvinyl alcohol, bentonite, magnesium aluminum silicate, etc.; antifreeze agents such as one or more of ethylene glycol, propylene glycol, glycerol, urea, inorganic salts (such as sodium chloride), etc.; the dispersion medium is selected from one or more of soybean oil, oleum Rapae, wheat oil, methyl oleate, diesel oil, engine oil, mineral oil, etc.
The invention also discloses the use of the herbicidal composition for controlling unwanted plants;
further, the unwanted plants are monocotyledonous weeds and/or dicotyledonous weeds, and still preferably, the monocotyledonous weeds are one or more of barnyard grass, moleplant seeds, Leersia graminis and Cyperus rotundus, and the dicotyledonous weeds are one or more of eclipta prostrata, monochoria vaginalis and Arrowia cremastra;
further, the herbicidal composition containing active ingredient a and active ingredient B is applied to the growing locus and/or leaves and/or stems of unwanted plants;
further, the growing place of the unwanted plants is a paddy field.
The invention has the beneficial effects that:
the invention has reasonable components and lasting drug effect, is applied at one time, and can control various weed hazards in the rice growth period; the weeding composition has good weeding effect and low drug cost, and the activity and the weeding effect of the weeding composition are not simple superposition of the activities of all components, but have obvious synergistic effect, can expand the weed control spectrum, delay resistance, are safe to crops, and meet the safety requirement of pesticide preparations. The invention has good control effect on weeds such as barnyard grass, moleplant seed, rice leek, cyperus rotundus, eclipta prostrata, oldenlandia diffusa and the like in the paddy field.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more concise and clear, the present invention is described with the following specific embodiments, but the present invention is by no means limited to these embodiments. The following described 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 present invention. It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Preparation examples of formulations
In order to better illustrate the invention, the following examples are given to further illustrate the invention.
Example 1: 17% Cyclosulfuron-methyl-pyribenzoxim emulsifiable concentrate (15:2)
The formula is as follows: 15% of cyclosulfuron, 2% of pyribenzoxim, 30% of dimethyl sulfoxide, 5% of fatty alcohol-polyoxyethylene ether, 9% of alkylphenol polyoxyethylene polyoxypropylene ether, 2% of butyl acetic acid, 1% of calcium dodecyl benzene sulfonate and propylene carbonate to make up the balance;
the preparation method comprises the following steps: adding the active ingredients of the cyclosulfuron methyl and the pyribenzoxim into a carrier according to the proportion of the formula of the embodiment, adding a surfactant and other functional auxiliaries, and uniformly stirring and mixing in a stirring and mixing kettle to obtain the emulsifiable concentrate.
Example 2: 36% Cyclosulfuron-pyrazosulfuron emulsifiable concentrate (5:1)
The formula is as follows: 30% of cycloamisulfuron, 6% of pyrazosulfuron-ethyl, 10% of N, N-dimethyldecanamide, 2% of castor oil, 3% of calcium dodecylbenzene sulfonate and trimethylbenzene to make up the balance;
the preparation method comprises the following steps: the same as in example 1.
Example 3: 22% Cyclosulfuron-pyribenzoxim suspension (10:1)
The formula is as follows: 20% of cyclosulfuron-methyl, 2% of pyribenzoxim, 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 to make up the balance;
the preparation method comprises the following steps: according to the formula proportion, the active ingredients of the cyclosulfuron-methyl, the pyribenzoxim, the surfactant and other functional auxiliaries are sequentially placed in a reaction kettle, water is added for uniform mixing, and the suspending agent product is obtained through high-speed shearing, wet sanding and finally homogeneous filtering.
Example 4: 25% Cyclosulfuron-pyrazosulfuron suspending agent (4:1)
The formula is as follows: 20 percent of cyclsulfuron-methyl, 5 percent of pyrazosulfuron-ethyl, 9 percent of dodecyl polyoxyethylene ether phosphate, 2 percent of alkyl polyoxyethylene ether sodium sulfonate, 0.4 percent of magnesium aluminum silicate, 0.2 percent of carboxyethyl cellulose, 4 percent of sorbitol, 0.1 percent of sodium benzoate, 0.5 percent of silicone oil and deionized water to make up the balance;
the preparation method comprises the following steps: the same as in example 3.
Example 5: 15% Cyclosulfuron-pyribenzoxim suspending agent (2:1)
The formula is as follows: 10% of cyclosulfuron-methyl, 5% of pyribenzoxim, 7% 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 to make up the balance;
the preparation method comprises the following steps: the same as in example 4.
Example 6: 30% amisuluron-pyribenzoxim wettable powder (1:1)
The formula is as follows: 15 percent of cycloamisulfuron, 15 percent of pyribenzoxim, 5 percent of calcium alkyl naphthalene formaldehyde condensate sulfonate, 7 percent of sodium alkyl phenol polyoxyethylene ether sulfonate, 2 percent of sodium alkyl naphthalene sulfonate, 4 percent of talcum powder and diatomite, and the balance;
the preparation method comprises the following steps: according to the formula proportion of the embodiment, the effective components of the cyclosulfuron-methyl and the pyribenzoxim are added into the carrier, the surfactant and other functional additives are added into the carrier, the mixture is mixed, and the wettable powder can be prepared by mixing the components after airflow crushing.
Example 7: 30% amisulsulfuron pyrazosulfuron wettable powder (2:1)
The formula is as follows: 20% of cycloamisulfuron, 10% of pyrazosulfuron-ethyl, 5% of sodium lignosulfonate, 5% of fatty alcohol-polyoxyethylene ether phosphate, 4% of sodium polycarboxylate, 3% of sodium alkyl sulfate, 3% of white carbon black and talcum powder;
the preparation method comprises the following steps: the same as in example 6.
Example 8: 16% amisulsulfuron pyrazosulfuron wettable powder (3:1)
The formula is as follows: 12 percent of cyclamate, 4 percent of pyrazosulfuron-ethyl, 4 percent of calcium alkyl naphthalene formaldehyde condensate sulfonate, 5 percent of sodium alkylphenol polyoxyethylene ether sulfonate, 2 percent of sodium alkyl naphthalene sulfonate, 5 percent of talcum powder and kaolin, and the balance being made up;
the preparation method comprises the following steps: the same as in example 6.
Example 9: 30% Cyclosulfuron-methyl pyribenzoxim water dispersible granule (5:1)
The formula is as follows: 25% of cyclosulfuron-methyl, 5% of pyribenzoxim, 3% of polycarboxylate GY-D06, 4% of sodium dodecyl sulfate, 1% of sodium alkyl sulfonate, 1% of sucrose and argil, and the balance being made up;
the preparation method comprises the following steps: adding the effective components of the cyclosulfamuron and the pyribenzoxim into a carrier according to the formula proportion of an embodiment, adding a surfactant and other functional auxiliaries, mixing, carrying out air flow crushing, adding 10% of water, kneading, granulating, drying and screening to obtain the water dispersible granule product.
Example 10: 15% amisulsulfuron-pyrazosulfuron water dispersible granule (2:1)
The formula is as follows: 10% of cyclosulfamuron, 5% of pyrazosulfuron-ethyl, 3% of polycarboxylate T36, 4% of sodium dodecyl sulfate, 1% of alkyl sodium sulfonate, 3% of glucose and talcum powder, and the balance is made up;
the preparation method comprises the following steps: the same as in example 9.
Example 11: 40% amisulsulfuron pyrazosulfuron water dispersible granule (3:1)
The formula is as follows: 30% of cycloamisulfuron, 10% of pyrazosulfuron-ethyl, 4% of sodium alkyl naphthalene sulfonate, 3% of sodium lignosulfonate, 2% of sodium dibutyl naphthalene sulfonate, 2% of sodium naphthalene sulfonate, 5% of sodium carboxymethylcellulose, 5% of sodium sulfate and white carbon black for balancing;
the preparation method comprises the following steps: the same as in example 10.
Example 12: 32% Cyclosulfuron-pyribenzoxim dispersible oil suspending agent (15:1)
The formula is as follows: 30% of cyclosulfuron-methyl, 2% of pyribenzoxim, 2% of sodium polycarboxylate, 4% of nanoemulsion 1601#, 3% of tween-60 #, 4% of microemulsion 2201, 1% of sodium alkyl sulfate, 0.5% of bentonite, 5% of propylene glycol and soybean oil for supplementing the balance;
the preparation method comprises the following steps: according to the formula proportion, the active ingredients of the cyclosulfuron, the pyribenzoxim, the surfactant and other functional additives are sequentially placed in a reaction kettle, added with oil and uniformly mixed, and subjected to high-speed shearing, wet sanding and finally homogeneous filtration to obtain the product.
Example 13: 15% Cyclosulfuron-pyrazosulfuron-ethyl dispersible oil suspending agent (4:1)
The formula is as follows: 12% of cycloamisulfuron, 3% of pyrazosulfuron-ethyl, 2% of sodium lignosulfonate, 5% of span-60 #, 5% of agricultural milk 700#, 4% of sodium naphthalene sulfonate, 1% of magnesium aluminum silicate, 4% of glycerol and rapeseed oil;
the preparation method comprises the following steps: the same as in example 12.
Example 14: 25% Cyclosulfuron-methyl pyribenzoxim emulsion in water (4:1)
The formula is as follows: 20% of cyclosulfuron-methyl, 5% of pyribenzoxim, 2% of dimethylformamide, 4% of calcium dodecyl benzene sulfonate, 2% of calcium dodecyl benzene sulfonate, 3% of glycol and deionized water to make up the balance;
the preparation method comprises the following steps: dissolving the effective components of the cyclosulfamuron and the pyribenzoxim into a solvent according to the formula proportion, adding an emulsifier, dissolving into a uniform oil phase, and mixing deionized water and an antifreezing agent together to form a uniform water phase; under high-speed shearing, adding the water phase into the oil phase to form well-dispersed aqueous emulsion.
Activity assay
Example 15: the test basis is as follows: NY/T1155.9-2008 "indoor bioassay of pesticides test criteria herbicides part 9: test stem and leaf spraying method for determining activity of paddy field herbicide and NY/T1155.7-2006 part 7 of herbicide standard for indoor bioassay of pesticides: combined action assay of compounding.
Test targets: barnyard grass, moleplant seed, monochoria vaginalis and short arrowhead.
Reagent to be tested: 99% of cyclosulfamuron technical, 98% of pyribenzoxim technical and 98% of pyrazosulfuron-ethyl technical are provided by research and development center of Hilier pharmaceutical industry group Limited.
Preparation of the medicament: dissolving the raw materials 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 the quantified grass seeds in pots with the diameter of 9cm, culturing in a light incubator, and performing spray treatment on 20 plants per pot when weeds grow to the 1-3 leaf stage. The cultivation is continued in the greenhouse after the treatment, the weed control effect of each treatment is regularly observed, and the fresh weight of each treated weed is recorded after 14 days.
And (3) test treatment: repeat for 4 times in each treatment setting, and set clear water as a control.
Data investigation: the fresh weight control effect of each treatment was calculated 14 days after the spray treatment.
The calculation formula is as follows:
the weed fresh weight inhibition ratio (E) ═ fresh weight of weeds in blank area-fresh weight of weeds in control area/fresh weight of weeds in blank area ] × 100
Theoretical fresh weight inhibition ratio (E) of mixed herbicide0) The fresh weight inhibition ratio of the compound a at the dosage of P + the fresh weight inhibition ratio of the compound B at the dosage of Q- (the fresh weight inhibition ratio of the compound a at the dosage of P × the fresh weight inhibition ratio of the compound B at the dosage of Q)/100.
The combined action evaluation standard of the mixed medicament is as follows:
E-E0more than 10% is synergistic effect, E-E010% below is antagonistic, E-E0An addition of. + -. 10% is obtained.
The test results are shown in the following tables:
according to indoor activity tests, the cymsulfuron-methyl, the pyribenzoxim and the pyrazosulfuron-ethyl are mixed to form the compound herbicide which has good indoor activity on common weeds in the paddy field.
The mixture ratio of the cyclosulfuron to the pyribenzoxim is 30+35(6:7), 30+70(3:7), 45+17.5(18:7), 45+70(9:14), 60+17.5(24:7), 60+35(12:7) and 60+70(6:7), so that the pyributicarb synergistic control effect is realized on the barnyard grass in the paddy field; when the mixing ratio of the cyclosulfuron to the pyribenzoxim is 45+35(9:7) and 60+35(12:7), the mixture shows good control effect on the stephania japonica in the paddy field, and the combined action is evaluated as synergism; the mixing ratio of the cyclamate to the pyribenzoxim is 45+35(9:7), 60+17.5(24:7) and 60+35(12:7), the compound herbicide has good control effect on the monochoria vaginalis in the paddy field, the fresh weight inhibition rates are respectively 76.83%, 75.41% and 78.33%, and the combined action is evaluated as synergistic action; the mixture ratio of the cyclosulfuron to the pyribenzoxim is 45+35(9:7), 60+17.5(24:7), 60+35(12:7) and 60+70(6:7), the cyclosulfuron and the pyribenzoxim show better control effect on the rice field dwarf arrowheads, and the combined action is evaluated as synergistic action.
The mixing ratio of the cyclosulfamuron to the pyrazosulfuron-ethyl is 45+10(9:2) and 45+40(9:8), the inhibition rates of the cyclosulfamuron to the fresh weight of the barnyard grass in the paddy field are 49.58% and 62.14% respectively, the theoretical inhibition rates of the fresh weight are 37.57% and 52.01% respectively, and the synergistic effect is shown; the mixing ratio of the cyclosulfamuron to the pyrazosulfuron is 45+10(9:2), 45+20(9:4) and 45+40(9:8), the synergistic effect is shown for preventing and treating the moleplant seeds in the paddy field, and the synergistic effect is shown for preventing and treating the monochoria vaginalis in the paddy field by the cyclosulfamuron and the pyrazosulfuron 45+20(9:4), 45+40(9:8) and 60:40(3: 2); the cyclosulfamuron and the pyrazosulfuron-ethyl 45+10(9:2), 60:10(6:1), 60+20(3:1) and 60:40(3:2) have good indoor activity on the dwarf arrowheads in the paddy field, and show synergistic control effects, the proportions of 30+10(3:1), 30+20(3:2), 30+40(3:4), 45+20(9:4) and 45+40(9:8) show additive effects on the dwarf arrowheads, and the other proportions show synergistic effects.
The results of the indoor activity tests show that the cyclosulfamuron and pyribenzoxim or pyrazosulfuron are mixed to form common weeds such as barnyard grass, moleplant seed, monochoria vaginalis and rhizoma pleionis in the paddy field, and have good indoor activity.
Test of field drug effect
Example 16: and (3) field efficacy test of the weeding composition containing the cyclosulfamuron.
The inventor carries out a field pesticide effect test of preventing and treating paddy field weeds by 24% of cyclosulfamuron-pyribenzoxim wettable powder (5:1), 40% of cyclosulfamuron-pyribenzoxim water dispersible granules (4:1), 20% of cyclosulfamuron wettable powder, 5% of pyribenzoxim microemulsion and 10% of pyrazosulfuron wettable powder in 2018 in Hunan Changde, wherein the dosage of the pesticide is 20, 15, 30, 35 and 25g of a.i./ha respectively, and the pesticide verifies the preventing and treating effect of the pesticide on the paddy field weeds and the safety of the pesticide on rice.
The test crop is rice, the control object is conventional weeds in the rice field, and the weeds are applied in the 2-5 leaf stage.
The test field has flat vigor, soil is loam, the fertility is moderate, and the pH value is 7.2. Blank control is set, each treatment is repeated for 4 times, each cell is 20 square meters, and random blocks of different treatment cells are arranged in groups in the test by adopting a conventional spraying method.
The investigation method comprises the following steps: on the treatment day, recording the weed species of each plot, the growth period of main weeds, the growth period and coverage of rice and the like; 5d after treatment, observing the prevention condition by visual observation; fresh weight investigation was conducted 21 days after the administration.
The drug effect calculation method comprises the following steps:
fresh matter weight control effect (%) - (weight of fresh weed matter in blank control area-weight of fresh weed matter in treated area)/weight of fresh weed matter in blank control area × 100
And calculating the control effect according to the formula, and performing significance analysis by using a new repolarization method.
Crop investigation: observing whether the pesticide has phytotoxicity on the rice, recording the type and the degree of the phytotoxicity, and grading the phytotoxicity of each cell according to a phytotoxicity grading method;
level 1: the rice grows normally without any damage symptom;
and 2, stage: the rice has slight phytotoxicity which is less than 10 percent;
and 3, level: the rice can recover after medium phytotoxicity, and the yield is not influenced;
4, level: the rice has serious phytotoxicity and is difficult to recover, thereby causing the reduction of yield;
and 5, stage: the rice has serious phytotoxicity and can not be recovered, thereby causing obvious yield reduction or no yield.
Meanwhile, the phytotoxicity symptoms of the rice are accurately described, and the growth conditions of the rice under all conditions are recorded.
Results and analysis
According to field investigation, the main monocotyledon weeds in the paddy field comprise large crabgrass, barnyard grass, eleusine indica, moleplant seed and the like, and the dicotyledons comprise monochoria vaginalis, rhizoma pleionis, eclipta prostrata and Equisetum ramosissimum. As shown in Table 5, test results show that the control effects of the 24% cyclosulfuron-pyribenzoxim wettable powder (5:1) and the 40% cyclosulfuron-pyribenzoxim water dispersible granule (4:1) on monocotyledons are more than 80%, and the control effects of the 24% cyclosulfuron-pyribenzoxim wettable powder (5:1) and the 40% cyclosulfuron-pyribenzoxim water dispersible granule (4:1) on dicotyledons are better than that of a control single agent, namely 20% cyclosulfuron-sodium wettable powder, 5% pyribenzoxim microemulsion and 10% pyrazosulfuron wettable powder, and the control effects of the 24% cyclosulfuron-pyribenzoxim wettable powder (5:1) and the 40% cyclosulfuron-pyribenzoxim water dispersible granule (4:1) on dicotyledons, so that the.
TABLE 5 herbicidal composition containing cyclosulfamuron for paddy field weed control
Note: the control effect in the table above is the average control effect of 4 replicates.
TABLE 6 Total control Effect of Cycarbazone-sodium herbicidal compositions on Paddy field weeds
Note: the control effect in the above table is the overall control effect, with capital letters representing the most significant level of 1% difference and lowercase letters representing the most significant level of 5% difference.
The results of the total control effects of the weeding composition containing the cyclosulfamuron on paddy field weeds in table 6 show that the total control effect of 24% of the cyclosulfamuron pyribenzoxim wettable powder (5:1) on monocotyledons is 81.52%, the total control effect of 40% of the cyclosulfamuron pyribenzoxim water dispersible granules (4:1) on the monocotyledons is 91.45%, a biometrical analysis method is adopted to adopt a Duncan's new double polar Difference (DMRT) method, the two compound medicaments are superior to a control single medicament at the levels of 0.01 and 0.05, and have significant difference with the control medicaments of 20% of cyclosulfamuron wettable powder, 5% of pyribenzoxim microemulsion and 10% of pyrazosulfuron wettable powder; the total control effect of the 24% cyclosulfamuron-pyribenzoxim wettable powder (5:1) on dicotyledons is 90.66%, the total control effect of the 40% cyclosulfamuron-pyribenzoxim water dispersible granule (4:1) on dicotyledons is 96.07%, the two compound medicaments have no difference under the level of 0.05, the control effect is more than 90%, the control effect is better, the two compound medicaments are both superior to a single medicament, and the two compound medicaments have obvious difference under the levels of 0.01 and 0.05.
Safety investigation: and (4) observing during the test period, wherein all the test agents are safe to the growth of rice and have no phytotoxicity phenomenon. Observed 21 days after the application, as can be seen from the following table 7, the rice in each cell grows normally without any damage symptom, and the safety grade is 1 grade, which indicates that each agent is safe to the rice.
TABLE 7 Rice safety situation record table
In conclusion, the composition adopts a compound scheme of any one of the cyclosulfamuron, the pyribenzoxim and the pyrazosulfuron-ethyl, the activity and the weeding effect are not simple superposition of the activities of all components, and compared with the existing single preparation, the composition has excellent control effect on a plurality of monocotyledonous weeds and dicotyledonous weeds, remarkable synergistic effect, capability of delaying resistance, small pesticide residue and good safety, and meets the safety requirement of pesticide preparations.
Claims (10)
1. The weeding composition containing the cyclosulfamuron is characterized in that the effective components comprise an active component A and an active component B, wherein the active component A is the cyclosulfamuron, and the active component B is selected from any one of pyribenzoxim and pyrazosulfuron-ethyl.
2. The herbicidal composition according to claim 1, wherein the weight ratio of the active ingredient a to the active ingredient B is 1:50 to 50: 1.
3. The herbicidal composition according to claim 1, wherein the weight ratio of the active ingredient a to the active ingredient B is 1:20 to 20: 1.
4. The weeding composition according to claim 1, wherein the mass ratio of the active ingredients of the tembotrions to the pyribenzoxim is 1:10 to 10: 1; preferably, the mass ratio of the cyclosulfamuron to the pyribenzoxim is 1:5-5: 1.
5. A herbicidal composition according to claim 1, wherein the mass ratio of the active ingredients cyclosulfamuron to pyrazosulfuron-ethyl is 1:5 to 15: 1; preferably, the mass ratio of the cyclosulfamuron to the pyrazosulfuron-ethyl is 1:3-8: 1.
6. A herbicidal composition according to claim 1, characterized in that the sum of the mass of the active ingredients a and B is 5-90%, preferably 10-60% of the composition.
7. The herbicidal composition as claimed in claim 1, wherein said herbicidal composition can be prepared into solid preparation and/or liquid preparation, said solid preparation is any one of powder, granule, wettable powder, water dispersible granule, soluble powder, soluble granule, said liquid preparation is any one of emulsifiable concentrate, suspension, aqueous solution, aqueous emulsion, microemulsion, soluble solution;
preferably, the preparation formulation is missible oil, a suspending agent, an aqueous emulsion, wettable powder, water dispersible granules and a dispersible oil suspending agent.
8. Use of the herbicidal composition according to any one of claims 1 to 7 and a formulation thereof for controlling unwanted vegetation.
9. Use of the herbicidal composition according to claim 8, for controlling unwanted vegetation, characterized in that the unwanted vegetation is monocotyledonous weeds and/or dicotyledonous weeds;
more preferably, the monocotyledonous weeds are one or more of barnyard grass, moleplant seed, Leersia graminis and Cyperus rotundus, and the dicotyledonous weeds are one or more of eclipta prostrata, monochoria vaginalis and Arrowia cremastra.
10. Use of the herbicidal composition according to claim 9 for controlling unwanted vegetation, characterized in that it is used on the locus and/or the foliage and/or the stem of the unwanted vegetation;
preferably, the growing place of the unwanted plants is a paddy field.
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| CN104186536A (en) * | 2014-08-21 | 2014-12-10 | 青岛蓝图文化传播有限公司市南分公司 | Herbicidal composition applied to rice transplanting field |
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