Weeding composition containing benzopyridone and application of weeding composition

Abstract

The invention relates to the field of pesticides, and in particular relates to a weeding composition containing benzopyridim, the weeding composition comprises an active component A and an active component B. The active component A is benzopyridim, the active component B is pyrazosulfuron-ethyl, and the mass ratio of the active component A to the active component B is 1: 60-40: 1. The weeding composition disclosed by the invention expands a weed control spectrum, has an excellent control effect on annual weeds in a paddy field, is obvious in synergistic interaction, is safe to crops and is environment-friendly.

Description

[0001] This invention application is a divisional application of application number 2025105078513, application date 20250422, entitled "A herbicidal composition containing benzopropane and its application". Technical Field

[0002] This invention relates to the field of pesticides, specifically to a herbicidal composition containing benzo[a]trimethoprim; and also to the use of said herbicidal composition to prevent unwanted plant germination or growth. Background Technology

[0003] Weeds are unwanted plants that can severely damage crop yields. Farmers typically control these plants before planting and after sowing. Modern herbicides are used to control or suppress these unwanted plants, allowing sown crops to receive more nutrients.

[0004] The use of chemical herbicides is a key indicator of modern agriculture. In recent years, herbicide sales and application areas have increased annually. However, the widespread and continuous use of numerous herbicide varieties has led to several problems. For example, weed resistance has become increasingly prominent, especially in older weeds. Furthermore, single herbicides often have limited action and short durations of action. Therefore, there is an urgent need for long-acting herbicides and their combinations that offer broad spectrum control, high selectivity, and reduced pressure on weed resistance. Mixing different types of herbicides offers advantages such as broad spectrum control, improved efficacy, delayed weed resistance development, and time and labor savings.

[0005] The applicant mixed benzprom with any of butachlor and pyrimisulfuron, and found that within a certain mixing ratio range, it had a synergistic effect on weed control in paddy fields, with good rapid action, long residual effect, and effectively reduced the development of weed resistance, thus reducing the cost and number of applications, and making it safer and more efficient. Summary of the Invention

[0006] The purpose of this invention is to solve the problems of herbicide resistance to weeds in paddy fields and poor actual control effect in the prior art, and to provide a highly efficient, low-toxicity, fast-acting, long-lasting herbicidal composition containing benzopropane that is beneficial to the integrated management of weeds in paddy fields.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a herbicidal composition containing benzopropargyl, wherein the active ingredients of the herbicidal composition include active ingredient A and active ingredient B, wherein active ingredient A is benzopropargyl and active ingredient B is butachlor or pyrimisulfuron.

[0008] Furthermore, the mass ratio of active ingredient A to active ingredient B in the herbicidal composition is 1:60 to 40:1;

[0009] Furthermore, the active ingredient B is butachlor, and the mass ratio of benzo[achlor] to butachlor is 1:60~15:1;

[0010] Furthermore, the mass ratio of phenylpropanone to butachlor is 1:60 to 4:5;

[0011] Furthermore, the mass ratio of benzocaproic acid to butachlor is 1:20, 1:60, 8:20, 8:60, 8:100, 16:20, 16:60, or 16:100.

[0012] Furthermore, the active ingredient B is pyrimisulfuron, and the mass ratio of benzoxazine to pyrimisulfuron is 1:16 to 30:1;

[0013] Furthermore, the mass ratio of benzocaproic acid to pyrimisulfuron is 1:8 to 16:1;

[0014] Furthermore, the mass ratio of bensulfuron-methyl to pyrimisulfuron is 1:1, 1:3, 1:8, 8:1, 8:3, 8:8, 16:1, 16:3, or 16:8.

[0015] Furthermore, based on a total weight of 100 wt%, the total weight of active ingredient A and active ingredient B accounts for 0.1% to 80% of the herbicide composition.

[0016] Furthermore, the total weight of active ingredient A and active ingredient B accounts for 5% to 60% of the herbicidal composition;

[0017] Further, the total weight of active ingredient A and active ingredient B accounts for 5%, 5.5%, 7%, 8%, 9%, 10%, 11%, 12%, 12.5%, 13%, 14%, 15%, 16%, 17%, 18%, 19%, 20%, 21%, 22%, 23%, 24%, 25%, 26%, 27%, 28%, 29%, 30%, 31%, 32%, 33%, 34%, 35%, 36%, 37%, 38%, 39%, 40%, 41%, 42%, 43%, 44%, 45%, 46%, 47%, 48%, 49%, 50%, 55%, and 60% of the herbicidal composition;

[0018] Furthermore, the herbicidal composition contains other auxiliary ingredients in addition to the active ingredients, and the auxiliary ingredients are selected from one or more of the following: wetting agents, dispersants, emulsifiers, thickeners, disintegrants, antifreeze agents, defoamers, solvents, preservatives, stabilizers, synergists or carriers.

[0019] Furthermore, the emulsifier is selected from one or a mixture of multiple of the following: Agricultural Emulsion 500# (calcium alkylbenzene sulfonate), OP series phosphate esters (surfactant phosphate esters), 600# phosphate esters (phenylphenol polyoxyethylene ether phosphate esters), styrene polyoxyethylene ether wetting salts, alkyl biphenyl ether magnesium disulfonate salts, triethanolamine salts, Agricultural Emulsion 400# (benzyl dimethylphenol polyoxyethylene ether), Agricultural Emulsion 700# (alkylphenol formaldehyde resin polyoxyethylene ether), Ningru 36# (phenylethylphenol formaldehyde resin polyoxyethylene ether), Agricultural Emulsion 1600# (phenylethylphenol polyoxyethylene polypropylene ether), ethylene oxide-propylene oxide block copolymers, OP series (surfactants), BY series (castor oil polyoxyethylene ether), Agricultural Emulsion 33# (alkyl aryl polyoxyethylene polyoxypropylene ether), Span series (sorbitan monostearate), Tween series (dehydrated sorbitan fatty acid ester polyoxyethylene ether), or AEO series (fatty alcohol polyoxyethylene ether).

[0020] Furthermore, the dispersant is selected from one or more of the following: polycarboxylate, lignin sulfonate, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, calcium alkylbenzene sulfonate, sodium naphthalene sulfonate formaldehyde condensate, alkylphenol polyoxyethylene ether, fatty amine polyoxyethylene ether, fatty acid polyoxyethylene ether, or glycerol fatty acid ester polyoxyethylene ether.

[0021] Furthermore, the wetting agent is selected from one or more of the following: sodium dodecyl sulfate, sodium dodecylbenzene sulfonate, pull-opening powder BX, wetting and penetrating agent F, soapberry powder, silkworm excrement, or soapberry powder;

[0022] Furthermore, the penetrant is selected from one or more of the following: penetrant JFC (fatty alcohol polyoxyethylene ether), penetrant T (diisooctyl maleate sulfonate), azone, or organosilicon;

[0023] Furthermore, the dispersion medium may be one or more of the following: soybean oil, rapeseed oil, wheat oil, methyl oleate, diesel oil, engine oil, and mineral oil.

[0024] Furthermore, the antifreeze is selected from one or more of ethylene glycol, propylene glycol, glycerol, or urea, or a mixture thereof;

[0025] Furthermore, the thickener is selected from one or more of xanthan gum, disintegrant, bentonite, carboxymethyl cellulose, or magnesium aluminum silicate;

[0026] Furthermore, the stabilizer is selected from one or more of the following: epoxidized soybean oil, epichlorohydrin, BHT, ethyl acetate, and triphenyl phosphate;

[0027] Furthermore, the disintegrant is selected from one or more of the following: bentonite, urea, aluminum chloride, low-substituted hydroxypropyl cellulose, lactose, citric acid, succinic acid, or sodium bicarbonate;

[0028] Furthermore, the defoamer is selected from silicone oil, silicone compounds, and C. 10 ~C 20 Saturated fatty acid compounds or C8-C 10 A mixture of one or more fatty alcohol compounds.

[0029] Furthermore, the formulation of the herbicidal composition is prepared in the form of a solid dosage form and / or a liquid dosage form;

[0030] Furthermore, the solid dosage forms include powders, granules, balls, tablets, strips, wettable powders, oil-dispersible powders, emulsion powders, water-dispersible granules, emulsion granules, water-dispersible tablets, soluble powders, soluble tablets, or soluble granules;

[0031] Furthermore, the liquid formulation includes soluble agents, colloids, oils, spreading oils, emulsions, latexes, dispersible liquids, ointments, water emulsions, oil emulsions, microemulsions, lipids, suspensions, microcapsule suspensions, oil suspensions, dispersible oil suspensions, suspensions, microcapsule suspension-suspensions, microcapsule suspension-water emulsions, or microcapsule suspension-suspension emulsions;

[0032] Furthermore, the solid formulation is a water-dispersible granule or a wettable powder, and the liquid formulation is a suspension, emulsifiable concentrate, or dispersible oil suspension.

[0033] A herbicidal composition containing benzo[a]trimethoprim for the control of unwanted plants;

[0034] Furthermore, the unwanted plants are broadleaf weeds, grasses, and / or sedges.

[0035] Furthermore, the unwanted plant growing locations are rice, wheat, barley, rye, rapeseed, sugar beets, corn, turf, cotton, vegetables, sugarcane, and soybean fields.

[0036] A method for controlling unwanted plants includes applying a herbicidal composition containing benzo[a]bicide to the unwanted plant or its growing area.

[0037] The beneficial effects of this invention are as follows:

[0038] 1) The herbicidal composition provided by this invention can effectively control various common weeds and even resistant weeds, and delay the development of herbicide resistance in weeds;

[0039] 2) The herbicidal composition of the present invention broadens the spectrum of weed control, exhibiting excellent activity against grass, sedge, and broadleaf weeds, overcoming the problem of narrow spectrum control of single herbicides. It also has a long residual effect, is safe for crops, and can reduce the dosage of pesticides and reduce the cost of pesticide application. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Formulation preparation example:

[0042] Preparation Example 1: 20% Benzoate·Butachlor EC (2.5+17.5)

[0043] Formula composition: 2.5% benzocaproic acid, 17.5% butachlor, 25% propylene carbonate, 8% cyclohexanone, 2% calcium dodecylbenzenesulfonate, 12% alkylphenol polyoxyethylene ether, methyl oleate to make up the balance;

[0044] Preparation method: The active ingredients are added to the carrier according to the formulation ratio of the example, and surfactants and other functional additives are added thereto. The mixture is stirred and mixed evenly in a stirring mixing tank to obtain the emulsifiable oil product.

[0045] Preparation Example 2: 42% Benzoate·Butachlor Suspension Emulsion (6+36)

[0046] Formula composition: 6% phenylpropanol, 36% butachlor, 1% isotridecyl alcohol polyoxyethylene ether, 5% styrene phenol polyoxyethylene ether phosphate, 1% lignin sulfonate, 3% alkyl aryl polyoxyethylene ether polyoxypropylene ether, 0.15% xanthan gum, 5% propylene glycol, 0.1% sodium benzoate, 0.5% silicone oil, deionized water to make up the balance;

[0047] Preparation method: First, the solid active ingredient, some excipients, and some water are mixed evenly according to the specified ratio, and then subjected to high-speed shearing and wet milling to obtain an aqueous suspension. Second, the liquid active ingredient and emulsifier are stirred and mixed evenly to obtain an oil phase. Finally, the aqueous suspension and oil phase are thoroughly mixed and stirred, and then subjected to high-speed shearing to obtain the suspension emulsion product.

[0048] Preparation Example 3: 27% Benzoate·Butachlor Wettable Powder (3+24)

[0049] Formula composition: 3% benzo[unspecified], 24% butachlor, 10% sodium lignosulfonate, 8% polycarboxylate, 2% sodium dodecyl sulfate, 30% silica, and kaolin to make up the balance.

[0050] Preparation method: According to the formulation ratio in the example, the active ingredients are added to the carrier, and surfactants and other functional additives are added thereto. After mixing, the mixture is pulverized by air jet and then mixed again to obtain a wettable powder product.

[0051] Preparation Example 4: 10% Benzoate·Pyrimisulfuron wettable powder (7.5+2.5)

[0052] Formula composition: 7.5% benzyl acetam, 2.5% pyrimisulfuron, 10% dispersant NNO, 5% tea saponin, 2% sodium alkyl polyoxyethylene ether sulfonate, 5% silica, and kaolin to make up the balance.

[0053] Preparation method: Same as in preparation example 3.

[0054] Preparation Example 5: 22% Benzoate·Pyrimisulfuron-methyl Dispersible Oil Suspension (16+6)

[0055] Formula composition: 16% benzopropane, 6% pyrimisulfuron, 12% castor oil polyoxyethylene ether, 5% alkyl aryl polyoxyethylene ether polyoxypropylene ether, 2% octylphenol polyoxyethylene ether phosphate, 1% calcium dodecylbenzenesulfonate, 0.5% organobentonite, 1% fumed silica, and methyl oleate to make up the balance.

[0056] Preparation method: According to the formulation ratio in the example, the active ingredients, surfactants and other functional additives are placed in the reaction vessel in sequence, mixed evenly with an oily medium, and then subjected to high-speed shear milling and finally homogenized filtration to obtain the dispersible oil suspension product.

[0057] Example 1:

[0058] Indoor bioactivity assay

[0059] Test basis: The test was conducted in accordance with NY / T 1155.4-2006 "Guidelines for Indoor Bioassay Tests of Pesticides - Herbicides - Part 4: Activity Assay Tests - Foliar Spray Method".

[0060] Experimental targets: Echinochloa crus-galli, barnyard grass, arrowhead, duckweed, and sedge;

[0061] Instruments and equipment: light incubator, quantitative spray equipment, electronic balance, pots and pans, pipettes, etc.;

[0062] Test soil: The test used air-dried loam with organic matter content ≤3%, neutral pH, good air permeability, and sieved.

[0063] Experimental materials: A measured amount of soil was filled to 4 / 5 of the pot, and then watered from the bottom of the pot until the soil was completely saturated. Pretreated weed seeds were evenly sown on the soil surface, covered with 0.5cm–2cm of soil depending on seed size. After sowing, the plants were transferred to a greenhouse for conventional cultivation. After emergence, thinning was carried out to ensure uniform weed density. Foliar spraying was performed at appropriate leaf ages based on the characteristics of the herbicide.

[0064] Test agents: 90% benzoyl permethrin technical grade, 90% butachlor technical grade, 98% pyrimisulfuron technical grade.

[0065] Preparation of the drug: Dissolve the above raw materials in a suitable solvent, and then dilute with a 0.1% Tween 80 aqueous solution.

[0066] Chemical treatment: Foliar spraying was performed according to the experimental design, from low to high doses. Each treatment was replicated four times, with a control group (no chemical treatment) included. After treatment, the surface of the test materials was allowed to air dry naturally before being transferred to a greenhouse for routine cultivation.

[0067] Survey: Herbicidal activity was investigated and recorded using the absolute value survey method 14 days after treatment.

[0068] Calculation method:

[0069] Fresh weight control efficacy E = (Fresh weight of control area - Fresh weight of treatment area) × 100 / Fresh weight of control area

[0070] The combined effects of the mixtures were determined using the Gowing method, and the calculation formula is as follows:

[0071] Theoretical control efficacy E0 of the mixture = 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

[0072] Evaluation criteria for the combined effects of mixed drugs:

[0073] E-E0 > 10% indicates a synergistic effect, E-E0 < -10% indicates an antagonistic effect, and E-E0 between ±10% indicates an additive effect.

[0074] Experimental results:

[0075] As shown in Tables 1-5, the mass ratios of benzo[a]tazol to butachlor of 1:20, 8:20, 8:60, 8:100, 16:20, 16:60, and 16:100 showed a synergistic effect on *Echinochloa crus-galli* and *Sagittaria sagittifolia*. The mass ratios of benzo[a]tazol to butachlor of 1:20, 1:60, 8:20, 8:60, 8:100, 16:20, 16:60, and 16:100 also showed a synergistic effect on *Echinochloa crus-galli*, *Monochoria vaginalis*, and *Cyperus difformis* in indoor combined treatment. The mass ratios of benzo[a]tazol to pyrimisulfuron of 1:1, 1:3, 1:8, 8:1, 8:3, 8:8, 16:1, 16:3, and 16:8 also showed a synergistic effect on *Echinochloa crus-galli*, *Echinochloa vaginalis*, *Sagittaria sagittifolia*, *Monochoria vaginalis*, and *Cyperus difformis* in indoor combined treatment.

[0076]

[0077]

[0078]

[0079]

[0080]

[0081] Field efficacy trials

[0082] Experimental site: Shucheng planting base, Lu'an City, Anhui Province. The soil fertility of the experimental site is moderate to high, and the terrain is flat.

[0083] Experimental crop: rice.

[0084] Experimental plot arrangement: The experiment consisted of a total of 8 treatments, each repeated 4 times. The experimental plots were randomly arranged in blocks, with each plot having an area of ​​20m². 2 .

[0085] Application time and method: The experiment was conducted on May 6, 2021, when weeds began to emerge. Foliar spraying was carried out on cloudy days with temperatures ranging from 20 to 25°C. A backpack electric sprayer was used for uniform spraying.

[0086] Method for investigating the effectiveness of disease control: Four random sampling points were taken in each area, with each point covering 0.25m. 2 The number of surviving weeds in each plot was investigated at 15 and 45 days after the application of the herbicide, and the weed control efficacy per plant was calculated. At 45 days after the application, the weeds were removed and their fresh weight was measured, and the fresh weight control efficacy was calculated.

[0087] Yield survey: The experiment was conducted at rice harvest time, with 5 points sampled diagonally in each plot, and each point surveyed for 1 m. 2 Actual yield, converted to yield per hectare, and the yield increase rate are calculated.

[0088] Crop safety observation: Observe the growth of rice at 15, 30 and 45 days after application of pesticide. If pesticide damage occurs, describe in detail the symptoms (growth inhibition, chlorosis, malformation) and the time of occurrence. Observe the changes in pesticide damage and the time of complete recovery at each survey.

[0089] The calculation formula is as follows:

[0090] Experimental Results and Analysis:

[0091] Table 6 shows that 15 days after application, the effective ingredient dosage of 20% benzalkonium chloride·butachlor EC (2.5+17.5) was 500 and 400 g ai / hm. 2 The effective dosage of 22% benzprom-propargyl·pyrimisulfuron dispersible oil suspension (16+6) is 90 and 75 g ai / hm. 2 It has a control efficacy of more than 80% against grasses, broadleaf weeds, and sedges, and shows excellent weed control effect compared with single-agent treatment.

[0092]

[0093] 45 days after application, the effective ingredient dosage of 20% bensulfuron-methyl·butachlor EC (2.5+17.5) was 500 and 400 g a.i / hm. 2 The total fresh weight control efficacy against weeds was 95.18% and 94.22%, respectively; the effective ingredient dosage of 22% bensulfuron-methyl·pyrimisulfuron dispersible oil suspension (16+6) was 90 and 75 g ai / hm. 2 The total fresh weight control efficacy against weeds was 95.17% and 93.52%, respectively, showing good residual efficacy.

[0094]

[0095] Yields were measured in each treatment area at the rice harvest period. Table 8 shows that the effective dosage of 20% bensulfuron-methyl·butachlor EC (2.5+17.5) was 500 and 400 g ai / hm. 2 The equivalent yields of rice were 8774 and 8519 kg / hm, respectively. 2 Compared with the control group, the yields increased by 12.24% and 8.98% respectively; the effective ingredient dosage of 22% bensulfuron-methyl·pyrimisulfuron dispersible oil suspension (16+6) was 90 and 75 g ai / hm. 2 The equivalent yields of rice were 8611 and 8493 kg / hm, respectively. 2 The yields increased by 10.16% and 8.65% respectively compared to the control group with clean water.

[0096]

[0097] Safety results: Rice growth was observed 15, 30 and 45 days after application. No phytotoxicity was found in rice under any of the pesticide treatments, such as inhibited growth, yellowing, or deformity.

[0098] Although the present invention has been described in detail above with general description and specific embodiments, some modifications or improvements can be made to it based on the present invention, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention are within the scope of protection claimed by the present invention.

Claims

1. A herbicidal composition containing phenylpropargyl, characterized in that, The herbicidal composition comprises active ingredient A and active ingredient B, wherein active ingredient A is benzalkonium chloride and active ingredient B is pyrimisulfuron, and the mass ratio of active ingredient A to active ingredient B is 1:60 to 40:

1.

2. The herbicidal composition according to claim 1, characterized in that, The mass ratio of benzopropane to pyrimisulfuron is 1:16 to 30:

1.

3. The herbicidal composition according to claim 2, characterized in that, The mass ratio of bensulfuron-methyl to pyrimisulfuron is 1:8 to 16:

1.

4. The herbicidal composition according to claim 1, characterized in that, The total weight of the herbicidal composition is 100 wt%, and the total weight of active ingredient A and active ingredient B accounts for 0.1% to 80% of the herbicidal composition. Preferably, the total weight of active ingredient A and active ingredient B accounts for 5% to 60% of the herbicidal composition.

5. The herbicidal composition according to claim 1, characterized in that, In addition to the active ingredient, the herbicidal composition also contains other auxiliary ingredients, which are selected from one or more of the following: wetting agents, dispersants, emulsifiers, thickeners, disintegrants, antifreeze agents, defoamers, solvents, preservatives, stabilizers, synergists, or carriers.

6. The herbicidal composition according to claim 1, characterized in that, The herbicidal composition is prepared in the form of a solid formulation and / or a liquid formulation. The solid formulation is a water-dispersible granule or a wettable powder, and the liquid formulation is a suspension concentrate, an emulsifiable concentrate, or a dispersible oil suspension.

7. The herbicidal composition according to any one of claims 1-6 for the control of unwanted plants.

8. The application according to claim 7, characterized in that, The unwanted plants are broadleaf weeds, grasses, and / or sedges.

9. The application according to claim 7, characterized in that, The unwanted plant growing locations mentioned are rice, wheat, barley, rye, rapeseed, sugar beet, corn, turf, cotton, vegetables, sugarcane, and soybean fields.

10. A method for controlling unwanted plants, characterized in that, This includes applying the weed-control composition of claim 1 to unwanted plants or their growing areas.

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