A herbicidal composition containing flumeturon

Abstract

The application discloses a herbicidal composition containing flumeturon and application thereof, and the composition contains active ingredient A and active ingredient B, wherein the active ingredient A is flumeturon, and the active ingredient B is bispyribac. The mass ratio of the active ingredient A to the active ingredient B is 1:50-50:1. The application is reasonable in component, has good herbicidal effect in a rice field, and the activity and the herbicidal effect are not simple superposition of each component. Compared with existing single preparation, the application has the characteristics of significant herbicidal effect, low drug dosage, wide weed spectrum and good safety to crops.

Description

[0001] This invention application is a divisional application of application number 202310692280.6, filed on August 14, 2019, entitled "A herbicidal composition containing triazine fluroxypyr". Technical Field

[0002] This invention relates to a herbicidal composition, specifically a herbicidal composition containing triazine-flufenoxam, belonging to the field of pesticide compound technology. Background Technology

[0003] Triaziflam (CAS number 131475-57-5) is a novel triazine herbicide developed by Idemitsu Kosan Co., Ltd. of Japan in the late 1990s. It is mainly used for pre- and post-emergence control of grass and broadleaf weeds in rice fields. Triaziflam can act on multiple sites (inhibiting photosynthesis, microtubule formation, and cellulose formation), and has a novel weeding mechanism.

[0004] Penoxsulam, CAS number 219714-96-2, is an inhibitor of branched-chain amino acid (leucine, isoleucine, and valine) synthesis (ALS or AHAS). It is mainly absorbed through leaves, followed by roots, and translocated in the phloem and xylem. It is used in paddy fields to control barnyard grass and many broadleaf and sedge aquatic weeds.

[0005] Pyrazosulfuron-ethyl (CAS No. 93697-74-6) is a branched-chain amino acid synthesis (ALS or AHAS) inhibitor. It inhibits cell division and plant growth by suppressing the synthesis of leucine and valine. It is a systemic herbicide that is absorbed through the roots and leaves of plants and translocated to meristematic tissues. It is mainly used for annual or perennial broadleaf weeds and sedges in direct-seeded or transplanted rice fields.

[0006] Bispyribac-sodium (CAS number 125401-92-5) is a selective benzoic acid herbicide that inhibits the synthesis of acetolactate (ALS) through root and leaf absorption, thereby hindering the biosynthesis of branched-chain amino acids and inhibiting the growth of plant meristems, thus killing weeds. When used in direct-seeded rice fields, it controls annual broadleaf weeds.

[0007] Herbicides containing a single active ingredient have varying degrees of shortcomings in weed control. Continuous use can easily lead to herbicide resistance in weeds, resulting in a narrowed spectrum of weed control and environmental pollution. Rational herbicide formulation is an effective method to improve control efficacy, broaden the weed control spectrum, delay weed resistance development, reduce environmental pollution, lower usage costs, and reduce herbicide residues. The applicant unexpectedly discovered that mixing triazine flumetsulam with one or more of penoxsulam, pyrimisulfuron, and bispyribac-sodium, which have different mechanisms of action, significantly enhances the control of various broadleaf weeds such as *Eclipta prostrata*, *Monochoria vaginalis*, and *Sagittaria sagittifolia*, as well as grasses such as barnyard grass, *Echinochloa crus-galli*, and *Cyperus difformis*, and sedges such as *Cyperus difformis*. This significantly improves the control efficacy against broadleaf and grass weeds in rice paddies, broadens the weed control spectrum, reduces dosage, lowers control costs, and improves crop safety. Furthermore, a search revealed no reports of mixtures containing one or more of triazine fluroxypyr, penoxsulam, pyrimisulfuron, or bispyribac-sodium. Summary of the Invention

[0008] The purpose of this invention is to provide a herbicidal composition containing triazine fluroxypyr, which has a reasonable composition, low application cost, significant synergistic effect, good herbicidal effect, broad spectrum of weed control, and is safe for crops.

[0009] Another object of the present invention is to provide a formulation of a herbicidal composition containing triazine-fluoxane.

[0010] Another object of the present invention is to provide the above composition for the control of grass and broadleaf weeds in paddy fields.

[0011] The technical solution of the present invention is as follows:

[0012] A herbicidal composition containing triazinon-flufenican, wherein the active ingredients include active ingredient A and active ingredient B, wherein active ingredient A is triazinon-flufenican, and active ingredient B is selected from one or more of penoxsulam, pyrimisulfuron, and bispyribac-sodium.

[0013] Furthermore, in the herbicidal composition, the weight ratio of active ingredient A to active ingredient B is 1:50-50:1;

[0014] Furthermore, in the herbicidal composition, the weight ratio of active ingredient A to active ingredient B is 1:20-20:3;

[0015] Furthermore, in the herbicidal composition, the mass ratio of the active ingredients triazine flumetsulam to penoxsulam is 5:1-20:1; the mass ratio of triazine flumetsulam to pyrimisulfuron is 10:3-8:1; and the mass ratio of triazine flumetsulam to bispyribac-sodium is 2:1-20:3.

[0016] Further, the preferred mass ratio of triazine flumetsulam to penoxsulam is 10:1, 5:1, 10:3, 15:1, 15:2, 20:1, or 20:3; the preferred mass ratio of triazine flumetsulam to pyrimisulfuron is 5:1, 4:1, 10:3, 15:2, 6:1, 8:1, or 20:3; and the preferred mass ratio of triazine flumetsulam to bispyribac-sodium is 10:3, 5:2, 2:1, 5:1, 15:4, 3:1, 20:3, or 4:1.

[0017] Furthermore, the preferred mass ratio of triazine flumetsulam to penoxsulam is 10:1, 5:1, 15:1, or 15:2; the preferred mass ratio of triazine flumetsulam to pyrimisulfuron is 5:1, 4:1, or 6:1; and the preferred mass ratio of triazine flumetsulam to bispyribac-sodium is 15:4, 3:1, or 4:1.

[0018] The total weight of the active ingredients in the herbicidal composition accounts for 10% to 90% of the total weight of the composition, preferably 20% to 60%.

[0019] The present invention provides a herbicidal composition containing active ingredient A and active ingredient B, which can be formulated into pesticide-acceptable formulations, including solid formulations and liquid formulations, according to methods known to those skilled in the art.

[0020] Furthermore, the liquid formulation includes microcapsule suspensions, dispersible liquids, emulsifiable concentrates, emulsions, granules, oil emulsions, powders, water emulsions, microemulsions, dispersible oil suspensions, oil-dispersible powders, suspensions, suspension emulsions, soluble concentrates, and ultra-low volume liquids.

[0021] Furthermore, the preferred dosage form is an emulsifiable concentrate, a suspension concentrate, a wettable powder, a water-dispersible granule, or a dispersible oil suspension.

[0022] Furthermore, the additives that can be used in emulsifiable concentrates include: emulsifiers such as fatty alcohol polyoxyethylene ether, alkylphenol polyoxyethylene ether, alkylphenol polyoxyethylene polyoxypropylene ether, castor oil ethylene oxide adduct and its derivatives, polyoxyethylene polyoxypropylene block copolymer, and calcium dodecylbenzene sulfonate; and solvents such as one or more of thallium, methyl oleate, N,N-dimethyldecylamide, dimethyl sulfoxide, and propylene carbonate.

[0023] Furthermore, the adjuvants that can be used in suspension concentrates include: dispersants such as one or more of polycarboxylate, lignin sulfonate, and alkyl naphthalene sulfonate (dispersant NNO); emulsifiers such as BY (castor oil polyoxyethylene ether) series emulsifiers (BY-110, BY-125, BY-140), agricultural emulsion 700# (alkylphenol formaldehyde resin polyoxyethylene ether), agricultural emulsion 2201, Span-60# (sorbitan monostearate), Tween-60# (dehydrated sorbitan monostearate polyoxyethylene ether), and agricultural emulsion 16. One or more of the following: 01# (phenylethylphenol polyoxyethylene polyoxypropylene ether); one or more of the following wetting agents: alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkylphenol polyoxyethylene ether phosphate, phenylethylphenol polyoxyethylene ether phosphate, alkyl sulfate, alkyl sulfonate, naphthalene sulfonate; one or more of the following thickeners: silica, polyvinyl alcohol, bentonite, magnesium aluminum silicate; one or more of the following antifreeze agents: ethylene glycol, propylene glycol, glycerin, urea, inorganic salts such as sodium chloride; and deionized water as the carrier.

[0024] Furthermore, the additives that can be used in wettable powders include: dispersants such as one or more of polycarboxylate salts, lignin sulfonates, polyoxyethylene polyoxypropylene ether block copolymers, alkylnaphthalene formaldehyde condensate sulfonates, alkylphenol polyoxyethylene ether phosphates, fatty alcohol polyoxyethylene ether phosphates, and alkylphenol polyoxyethylene ether sulfonates; wetting agents such as one or more of alkyl sulfates, alkyl sulfonates, and alkylnaphthalene sulfonates; and fillers such as one or more of ammonium sulfate, urea, sucrose, glucose, diatomaceous earth, kaolin, silica, light calcium carbonate, talc, attapulgite, and clay.

[0025] Furthermore, the adjuvants that can be used in water-dispersible granules include: dispersants such as polycarboxylate (TERSPERSE 2700, T36, GY-D06, etc.), lignin sulfonate, alkyl naphthalene sulfonate, etc.; wetting agents such as alkyl sulfate, alkyl sulfonate, naphthalene sulfonate, etc.; disintegrants such as ammonium sulfate, sodium sulfate, polyvinylpyrrolidone, starch or its derivatives, bentonite, etc.; binders such as starch, glucose, polyvinyl alcohol, polyethylene glycol, sodium carboxymethyl cellulose, sucrose, etc.; fillers such as diatomaceous earth, kaolin, silica, light calcium carbonate, talc, attapulgite, clay, etc.

[0026] Furthermore, the adjuvants that can be used in dispersible oil suspensions include: dispersants such as one or more of polycarboxylates, lignin sulfonates, and alkyl naphthalene sulfonates (dispersant NNO); emulsifiers such as BY (castor oil polyoxyethylene ether) series emulsifiers (BY-110, BY-125, BY-140), agricultural emulsion 700# (alkylphenol formaldehyde resin polyoxyethylene ether), agricultural emulsion 2201, Span-60# (sorbitan monostearate), Tween-60# (dehydrated sorbitan monostearate polyoxyethylene ether), and agricultural emulsion 1601# (phenylethylphenol polyoxyethylene ether). One or more of the following: oxypropylene ether; wetting agents such as alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkylphenol polyoxyethylene ether phosphate, phenethylphenol polyoxyethylene ether phosphate, alkyl sulfate, alkyl sulfonate, naphthalene sulfonate, etc.; thickeners such as silica, polyvinyl alcohol, bentonite, magnesium aluminum silicate, etc.; antifreeze agents such as ethylene glycol, propylene glycol, glycerin, urea, inorganic salts such as sodium chloride, etc.; dispersion media such as soybean oil, rapeseed oil, wheat oil, methyl oleate, diesel oil, engine oil, mineral oil, etc.

[0027] Furthermore, the composition is an emulsifiable concentrate, and the components and contents of the emulsifiable concentrate are preferably: 0.1 to 100 parts of active ingredient A, 0.1 to 100 parts of active ingredient B, 0.1 to 20 parts of emulsifier, and the remainder is made up with solvent;

[0028] Furthermore, the composition is a suspending agent, and the components and contents of the suspending agent are preferably as follows: 0.1-100 parts of active ingredient A, 0.1-100 parts of active ingredient B, 1-15 parts of dispersant, 0.5-20 parts of emulsifier, 1-10 parts of wetting agent, 1-10 parts of thickener, 0-10 parts of antifreeze, and deionized water to make up the balance;

[0029] Furthermore, the composition is a wettable powder, and the components and contents of the wettable powder are preferably: 0.1-100 parts of active ingredient A, 0.1-100 parts of active ingredient B, 1-20 parts of dispersant, 1-15 parts of wetting agent, and filler to make up the balance;

[0030] Furthermore, the composition is a water-dispersible granule, and the components and contents of the water-dispersible granule are preferably as follows: 0.1-100 parts of active ingredient A, 0.1-100 parts of active ingredient B, 1-15 parts of dispersant, 1-10 parts of wetting agent, 1-15 parts of disintegrant, 1-10 parts of binder, and filler to make up the balance.

[0031] Furthermore, the composition is a dispersible oil suspension, and the components and contents of the dispersible oil suspension are preferably as follows: active ingredient A 0.1-100 parts, active ingredient B 0.1-100 parts, dispersant 1-15 parts, emulsifier 0.5-20 parts, wetting agent 1-10 parts, thickener 1-10 parts, antifreeze 0-10 parts, and the remaining amount is made up by the dispersion medium;

[0032] The present invention also discloses the use of the herbicidal composition described above for controlling unwanted plants;

[0033] Furthermore, the unwanted growing environment is rice paddies;

[0034] Furthermore, the unwanted plants are grass weeds and / or broadleaf weeds and / or sedge weeds;

[0035] Furthermore, the grassy weeds are one or more of barnyard grass, Echinochloa crus-galli, and Leymus chinensis; the broadleaf weeds are one or more of Eclipta prostrata, Commelina communis, and Sagittaria sagittifolia; and the sedges are one or more of Cyperus difformis and Cyperus rotundus.

[0036] The present invention also discloses a method for controlling unwanted plants, wherein the herbicidal composition containing active ingredient A and active ingredient B as described above is applied to the growth site and / or leaves and / or stems of the unwanted plants; preferably, the growth site of the unwanted plants is a paddy field; preferably, the unwanted plants are grass weeds and / or broadleaf weeds and / or sedge weeds; more preferably, the grass weeds are one or more of barnyard grass, Echinochloa crus-galli, Leymus chinensis, and sedge, the broadleaf weeds are one or more of Eclipta prostrata, Commelina communis, and Sagittaria sagittifolia, and the sedge weeds are one or more of Cyperus difformis and Cyperus rotundus.

[0037] The beneficial effects of this invention are:

[0038] This invention features a rationally formulated composition, excellent weed control, and low application cost. Furthermore, its activity and weed control effect are not simply the sum of the activities of its components, but rather exhibit a significant synergistic effect, broadening the weed control spectrum, delaying resistance development, and demonstrating good crop safety, meeting the safety requirements for pesticide formulations. This invention provides excellent control of broadleaf weeds, grasses, and sedges in paddy fields, including barnyard grass, Echinochloa crus-galli, Leymus chinensis, Eclipta prostrata, Monochoria lingua, Sagittaria sagittifolia, Cyperus difformis, and Cyperus rotundus. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer and more concise, the invention is described using the following specific embodiments, but the invention is by no means limited to these embodiments. The embodiments described below are merely preferred embodiments of the invention and can be used to describe the invention, but 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 principles of this invention should be included within the protection scope of this invention.

[0040] Formulation preparation examples

[0041] To better illustrate the present invention, the following description, in conjunction with embodiments, further explains the content of the present invention.

[0042] Example 1: 17% triazine fluazinam·pentoxuron emulsifiable concentrate (15:2)

[0043] Formula: 15% triazine fluroxypyr, 2% penoxsulam, 30% dimethyl sulfoxide, 5% fatty alcohol polyoxyethylene ether, 9% alkylphenol polyoxyethylene polyoxypropylene ether, 1% calcium dodecylbenzene sulfonate, methyl oleate to make up the balance;

[0044] Preparation method: Add the active ingredients triazine fluroxypyr and penoxsulam to the carrier according to the formulation ratio in the example, and add surfactants and other functional adjuvants thereto. Mix evenly in a stirred mixing tank to obtain emulsifiable oil.

[0045] Example 2: 36% triazine fluazinam·pyrimisulfuron EC (5:1)

[0046] Formula: 30% triazine fluroxypyr, 6% pyrimisulfuron, 10% N,N-dimethyldecylamide, 2% castor oil, 3% calcium dodecylbenzenesulfonate, and thiol to make up the balance;

[0047] Preparation method: Same as in Example 1.

[0048] Example 3: 38% triazine-flufenoxam·bispyribac-sodium emulsifiable concentrate (15:4)

[0049] Formula: 30% triazine fluroxypyr, 8% bispyribac-sodium, 10% N,N-dimethyldecylamide, 10% dimethyl sulfoxide, 10% propylene carbonate, 5% fatty alcohol polyoxyethylene ether, 12% castor oil, 3% calcium dodecylbenzenesulfonate, and tricresylbenzene to make up the balance;

[0050] Preparation method: Same as in Example 1.

[0051] Example 4: 22% triazine-flufenoxam·pentoxam suspension concentrate (10:1)

[0052] Formula: 20% triazine fluroxypyr, 2% penoxsulam, 2% sodium alkyl sulfate, 3% alkylphenol formaldehyde resin polyoxyethylene ether, 0.4% carboxymethyl cellulose, 5% propylene glycol, 0.2% isothiazolinone, deionized water to make up the balance;

[0053] Preparation method: According to the formula ratio, the active ingredients triazine fluroxypyr, penoxsulam, surfactant and other functional adjuvants are placed in the reaction vessel in sequence, water is added and mixed evenly, and then subjected to high-speed shearing, wet sand milling, and finally homogenized filtration to obtain the suspension product.

[0054] Example 5: 25% triazine fluroxypyr·pyrimisulfuron suspension (4:1)

[0055] Formula: 20% triazine fluazinam, 5% pyrimisulfuron, 10% dodecyl polyoxyethylene ether phosphate, 2% sodium alkyl polyoxyethylene ether sulfonate, 0.4% magnesium aluminum silicate, 0.2% carboxyethyl cellulose, 4% sorbitol, 0.1% sodium benzoate, 0.5% silicone oil, deionized water to make up the balance;

[0056] Preparation method: Same as in Example 4.

[0057] Example 6: 15% triazine-flufenoxam·bispyribac-sodium suspension (2:1)

[0058] Formula: 10% triazine flufenoxam, 5% bispyribac-sodium, 8% dodecyl polyoxyethylene ether phosphate, 2% sodium alkyl polyoxyethylene ether sulfonate, 0.4% xanthan gum, 0.1% carboxyethyl cellulose, 4% sorbitol, 0.1% sodium benzoate, 0.5% silicone oil, deionized water to make up the balance;

[0059] Preparation method: Same as in Example 4.

[0060] Example 7: 30% triazine-flufenoxam·pentoxam wettable powder (1:1)

[0061] Formula: 15% triazine fluroxypyr, 15% penoxsulam, 5% alkylnaphthalene formaldehyde condensate calcium sulfonate, 6% alkylphenol polyoxyethylene ether sodium sulfonate, 3% alkylnaphthalene sodium sulfonate, 5% talc, diatomaceous earth to make up the balance;

[0062] Preparation method: According to the formulation ratio in the example, the active ingredients triazine fluroxypyr and penoxsulam are added to the carrier, and surfactants and other functional additives are added to it. After mixing, the mixture is pulverized by air jet and then mixed again to obtain wettable powder.

[0063] Example 8: 30% triazine fluroxypyr·pyrimisulfuron wettable powder (2:1)

[0064] Formula: 20% triazine fluroxypyr, 10% pyrimisulfuron, 4% sodium lignosulfonate, 5% fatty alcohol polyoxyethylene ether phosphate, 4% sodium polycarboxylate, 3% sodium alkyl sulfate, 3% silica, talc to make up the balance;

[0065] Preparation method: Same as in Example 7.

[0066] Example 9: 16% triazine-flufenoxam·bispyribac-sodium wettable powder (3:1)

[0067] Formula: 12% triazine fluroxypyr, 4% bispyribac-sodium, 4% alkylnaphthalene formaldehyde condensate calcium sulfonate, 5% alkylphenol polyoxyethylene ether sodium sulfonate, 2% alkylnaphthalene sodium sulfonate, 5% talc, kaolin to make up the balance;

[0068] Preparation method: Same as in Example 7.

[0069] Example 10: 30% triazine fluroxypyr·pentoxuron water-dispersible granules (5:1)

[0070] Formula: 25% triazine fluroxypyr, 5% penoxsulam, 3% polycarboxylate GY-D06, 4% sodium dodecyl sulfate, 1% sodium alkyl sulfonate, 2% sucrose, clay to make up the balance;

[0071] Preparation method: According to the formulation ratio in the example, the active ingredients triazine fluroxypyr and penoxsulam are added to the carrier, and surfactants and other functional additives are added to it. After mixing, the mixture is pulverized by air jet and 10-25% water is added. Then, the mixture is kneaded, granulated, dried and sieved to obtain the water-dispersible granule product.

[0072] Example 11: 15% triazine fluroxypyr·pyrimisulfuron water-dispersible granules (2:1)

[0073] Formula: 10% triazine fluroxypyr, 5% pyrimisulfuron, 3% polycarboxylate T36, 4% sodium dodecyl sulfate, 1% sodium alkyl sulfonate, 2% glucose, talc to make up the balance;

[0074] Preparation method: Same as in Example 10.

[0075] Example 12: 40% triazine-flufenoxam·bispyribac-sodium water-dispersible granules (3:1)

[0076] Formula: 30% triazine fluroxypyr, 10% bispyribac-sodium, 4% sodium alkyl naphthalene sulfonate, 3% sodium lignin sulfonate, 2% sodium dibutyl naphthalene sulfonate, 2% sodium naphthalene sulfonate, 4% sodium carboxymethyl cellulose, 5% sodium sulfate, with silica to make up the balance;

[0077] Preparation method: Same as in Example 10.

[0078] Example 13: 32% Triazine Fluroxypyr·Pivoxil Dispersible Oil Suspension (15:1)

[0079] Formula: 30% triazine fluroxypyr, 2% penoxsulam, 2% sodium polycarboxylate, 4% agricultural emulsion 1601#, 3% Tween-60#, 4% agricultural emulsion 2201, 1% sodium alkyl sulfate, 0.5% bentonite, 5% propylene glycol, soybean oil to make up the balance;

[0080] Preparation method: According to the formula ratio, the active ingredients triazine fluroxypyr, penoxsulam, surfactant and other functional adjuvants are placed in the reaction vessel in sequence, mixed with oil until uniform, and then subjected to high-speed shearing, wet sand milling, and finally homogenized filtration to obtain the product.

[0081] Example 14: 15% triazine fluroxypyr·pyrimisulfuron dispersible oil suspension (4:1)

[0082] Formula: 12% triazine flufenoxuron, 3% pyrimisulfuron, 2% sodium lignosulfonate, 5% Span-60#, 5% agricultural emulsion 700#, 4% sodium naphthalenesulfonate, 1% magnesium aluminum silicate, 4% glycerin, rapeseed oil to make up the balance;

[0083] Preparation method: Same as in Example 13.

[0084] Example 15: 25% triazine-flufenoxam·bispyribac-sodium dispersible oil suspension (4:1)

[0085] Formula: 20% triazine flufenoxam, 5% bispyribac-sodium, 2% sodium lignosulfonate, 4% agricultural emulsion 1601#, 3% Tween-60#, 4% agricultural emulsion 2201, 4% sodium naphthalenesulfonate, 1% magnesium aluminum silicate, 4% glycerin, rapeseed oil to make up the balance;

[0086] Preparation method: Same as in Example 13.

[0087] Activity test

[0088] Example 16: Test basis: NY / T1155.9-2008 "Guidelines for Indoor Bioassay Tests of Pesticides - Herbicides Part 9: Herbicide Activity Determination Tests in Paddy Fields - Foliar Spray Method".

[0089] Experimental targets: barnyard grass, Echinochloa crus-galli, Rhizophora oryzae, Cyperus difformis, Eclipta prostrata, Monochoria vaginalis, Sagittaria sagittifolia.

[0090] Test reagents: 99% triazine fluroxypyr technical, 98% penoxsulam technical, 98% pyrimisulfuron technical, and 97% bispyribac-sodium technical, provided by the R&D Center of Hailier Pharmaceutical Group Co., Ltd.

[0091] Preparation of reagents: Dissolve the drug in dimethylformamide and dilute with 0.1% Tween 80 aqueous solution. Prepare five series of mass concentrations according to the same ratio and set aside for later use.

[0092] Experimental method: A fixed amount of grass seeds was sown in pots with a diameter of 9 cm and cultivated in a light incubator. When the weeds reached the 1-3 leaf stage, 20 plants were planted per pot and sprayed. After treatment, the plants continued to be cultivated in a greenhouse. The weed control effect of each treatment was observed regularly, and the fresh weight of the weeds in each treatment was recorded after 14 days.

[0093] Experimental treatment: Each treatment was repeated 4 times, with a water control included.

[0094] Data survey: The fresh weight efficacy of each treatment was calculated 14 days after spraying.

[0095] The calculation formula is as follows:

[0096] Fresh weight control efficacy E = (fresh weight of control area - fresh weight of treatment area) × 100 / fresh weight of control area

[0097] Theoretical control efficacy of the mixture E0 = Weed control efficacy of herbicide A at dosage P + Weed control efficacy of herbicide B at dosage Q - Weed control efficacy of herbicide A at dosage P × Weed control efficacy of herbicide B at dosage Q ÷ 100

[0098] Evaluation criteria for the combined effects of mixed drugs:

[0099] E-E0 > 10% indicates a synergistic effect, E-E0 < -10% indicates an antagonistic effect, and E-E0 between ±10% indicates an additive effect.

[0100] The experimental results are shown in the following tables:

[0101] Table 1. Combined effects of triazine-flufenoxam and penoxsulam mixture on barnyardgrass and Echinochloa crus-galli.

[0102]

[0103] Table 2. Combined effects of triazine flumetsulam and penoxsulam in combination with duckweed and arrowhead.

[0104]

[0105]

[0106] Table 3. Combined effects of triazine flumetsulam and pyrimisulfuron-methyl mixed with Rhizophora oryzae and Echinochloa crus-galli.

[0107]

[0108] Table 4. Combined effects of triazine flumetsulam and pyrimisulfuron-methyl in combination with duckweed and eclipta prostrata.

[0109]

[0110]

[0111] Table 5. Combined effects of triazine-flufenoxam and bispyribac-sodium mixtures on *Euphorbia lathyris* and *Cyperus rotundus*.

[0112]

[0113]

[0114] Table 6. Combined effects of triazine-flufenoxam and bispyribac-sodium mixture on duck tongue grass and eclipta prostrata.

[0115]

[0116] Indoor activity studies showed that a mixture of triazinon with one of penoxsulam, pyrimisulfuron, or bispyribac-sodium exhibited good indoor activity against common weeds in paddy fields. The mixtures of triazinon-flufenoxam and penoxsulam at ratios of 100+10 (10:1), 100+20 (5:1), 100+30 (10:3), 150+10 (15:1), 150+20 (15:2), 150+30 (5:1), 200+10 (20:1), 200+20 (10:1), and 200+30 (20:3) showed good indoor activity against common weeds in paddy fields, including barnyard grass, Echinochloa crus-galli, Monochoria diffusa, and Sagittaria sagittifolia. The mixtures of triazinon-flufenoxam and pyrimisulfuron at ratios of 100+20 (5:1), 100+25 (4:1), 100+30 (10:3), 150+20 (15:2), and 150+25 (6:1) also showed good indoor activity against common weeds in paddy fields. The ratios of 150+30 (5:1), 200+20 (10:1), 200+25 (8:1), and 200+30 (20:3) showed good indoor activity against common paddy field weeds such as Leymus chinensis, Echinochloa crus-galli, Monochoria diffusa, and Eclipta prostrata. The ratios of triazine flufenoxuron mixed with bispyribac-sodium at the ratios of 100+30 (10:3), 100+40 (5:2), 100+50 (2:1), 150+30 (5:1), 150+40 (15:4), 150+50 (3:1), 200+30 (20:3), 200+40 (5:1), and 200+50 (4:1) showed good indoor activity against common paddy field weeds such as Cyperus rotundus, Cyperus diffusa, Monochoria diffusa, and Eclipta prostrata.

[0117] Field efficacy trials

[0118] Example 17: Field efficacy test of a herbicidal composition containing triazine-flufenoxam.

[0119] In 2018, the inventors conducted field efficacy trials on weeds in paddy fields using 24% triazinon-flufenican·pentoxuron wettable powder (5:1), 40% triazinon-flufenican·pyrimisulfuron water-dispersible granules (32:8), 20% triazinon-flufenican·bispyribac-sodium oil-dispersible suspension (3:1), 10% penoxuron water-dispersible granules, 5% pyrimisulfuron wettable powder, and 20% bispyribac-sodium oil-dispersible suspension. The trials verified the efficacy of the pesticides in controlling weeds in paddy fields and their safety for rice.

[0120] The experimental crop was rice, and the target weeds were broadleaf and grassy weeds in the paddy field. Application was performed when the weeds were at the 2-5 leaf stage. The experimental field was flat, with loam soil of moderate fertility and a pH of 7.2. The experimental pesticides and dosages are detailed in Table 7. A blank control was also included. Each treatment was replicated four times, with each plot measuring 20 square meters, arranged in a randomized block design. Conventional spraying was used.

[0121] Table 7. Control efficacy of triazine-fluorine-containing herbicidal compositions against weeds in rice paddies.

[0122]

[0123] Field trial results showed that the above formulation examples had excellent control effects on weeds in paddy fields. When the formulations were sprayed once at the above dosage, the average control efficacy against weeds in paddy fields reached over 90% 30 days after application, significantly better than the control efficacy of the various control agents. Analysis of the significant differences in control efficacy 30 days after application revealed significant differences in control efficacy between triazinon-flufenoxam and any combination of penoxsulam, pyrimisulfuron, or bispyribac-sodium compared to other control treatments.

[0124] Safety investigation: During the trial, all tested agents were observed to be safe for rice growth, and no phytotoxicity occurred.

[0125] In summary, the composition of the present invention is a combination of triazine fluroxypyr with penoxsulam, pyrimisulfuron, or bispyribac-sodium. Its activity and herbicidal effect are not a simple sum of the activities of each component. Compared with existing single formulations, it has significant control efficacy against mixed infestations of various grass and broadleaf weeds, with significant synergistic effects, can delay resistance, has low pesticide residues, and good safety, meeting the safety requirements of pesticide formulations.

Claims

1. A herbicidal composition containing triazine-flufenoxam, characterized in that, The herbicidal composition comprises active ingredient A and active ingredient B, wherein active ingredient A is triazine fluroxypyr and active ingredient B is bispyribac-sodium, and the mass ratio of triazine fluroxypyr to bispyribac-sodium is 15:4, 3:1, or 4:

1.

2. The herbicidal composition according to claim 1, characterized in that, The combined mass of active ingredient A and active ingredient B accounts for 10% to 90% of the composition.

3. The herbicidal composition according to claim 2, characterized in that, The combined mass of the active ingredient A and the active ingredient B constitutes 20% to 60% of the composition.

4. The herbicidal composition according to claim 1, characterized in that, The herbicidal composition is formulated as any one of emulsifiable concentrate, suspension concentrate, wettable powder, water-dispersible granules, or dispersible oil suspension.

5. The use of the herbicidal composition according to any one of claims 1-4 for controlling unwanted plants, characterized in that, The unwanted plants were growing in rice paddies.

6. The use according to claim 5, characterized in that, The unwanted plants mentioned are Cyperus rotundus, Cyperus difformis, Eclipta prostrata, or Duckweed.

7. A method for controlling unwanted plants, characterized in that, The weed control composition of claim 1 is applied to the growth site and / or leaves and / or stems of unwanted plants.

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