CN114287435A - Weeding composition - Google Patents
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- CN114287435A CN114287435A CN202210047031.7A CN202210047031A CN114287435A CN 114287435 A CN114287435 A CN 114287435A CN 202210047031 A CN202210047031 A CN 202210047031A CN 114287435 A CN114287435 A CN 114287435A
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- weeds
- herbicidal composition
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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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- 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
- A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
- A01N33/16—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds containing nitrogen-to-oxygen bonds
- A01N33/18—Nitro compounds
- A01N33/20—Nitro compounds containing oxygen or sulfur attached to the carbon skeleton containing the nitro group
- A01N33/22—Nitro compounds containing oxygen or sulfur attached to the carbon skeleton containing the nitro group having at least one oxygen or sulfur atom and at least one nitro group directly attached to the same aromatic ring system
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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
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
- A01N43/42—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings condensed with carbocyclic rings
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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
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/74—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,3
- A01N43/76—1,3-Oxazoles; Hydrogenated 1,3-oxazoles
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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
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/84—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms six-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,4
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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
- A01N43/90—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
Abstract
The invention relates to a weeding composition, which comprises active components (A) and (B), wherein the active components (A) are compounds of a formula I, and the active components (B) are selected from one of the following compounds: metazosulfuron, flumioxazin, ethoxysulfuron, oxyfluorfen, quinclorac and pyraclonil. The invention also relates to the application of the weeding composition in controlling barnyard grass, chenopodium album, sedum ramosissimum and cyperus heterophyllusThe weed germination or growth uses such as herba monochoriae vaginalis, Iris lactea, herba portulacae, edible tulip, sweet wormwood, etc., wherein the active components (A) and (B) are applied in a synergistic ratio;
Description
The present invention is a divisional application having application number 202010012738.5, filing date 2020.1.7, entitled "a herbicidal composition".
Technical Field
The invention relates to a weeding composition, belonging to the technical field of crop protection; the herbicidal compositions according to the invention are particularly suitable for controlling weeds in rice crops.
Background
The compounds of formula I belong to protoporphyrinogen oxidase inhibitors; it is described for the first time in EP0241559 as a herbicide.
Formula I
The long-term use of herbicides results in a change in the sensitivity of the herbicide to weeds. Improving the control of tolerant or resistant weed species by increasing the application rate of the herbicide is often unsatisfactory. Increasing the application rate of the herbicide reduces the selectivity of the herbicide, or the herbicidal effect is not improved even at higher application rates.
Thus, in weed control, there is a need for herbicides with better overall selectivity for weeds; the same or better control effect is obtained under the condition of less application dosage; reducing the emission of active compounds into the environment, to avoid leaching and residual effects, for example; combines the rapid action with the long-acting action, and avoids multiple application.
Disclosure of Invention
It is an object of the present invention to provide a herbicidal composition which solves at least one of the problems such as improvement of biological properties, provision of synergistic properties, reduction of dosage rate, enlargement of herbicidal spectrum, combination of rapid and long-lasting action, management of resistance to delay of resistance.
It has now been found that, surprisingly, the active components (A) and (B) act in combination in a particularly advantageous manner. The simultaneous (i.e. joint or separate) or sequential application of active ingredients (a) and (B) gives an enhanced weed control effect compared to the control rates possible with the individual compounds, the unexpected effect being a true synergistic effect, not just an addition of the activities.
The weeding composition is realized by adopting the following technical scheme:
a herbicidal composition comprising active ingredients (a) and (B); the active component (A) is a compound of formula I, and the active component (B) is selected from one of the following compounds: metazosulfuron, flumioxazin, ethoxysulfuron, oxyfluorfen, quinclorac and pyraclonil; the weight ratio of the active components (A) and (B) is 100:1-1: 100.
Formula I
The active component (B) is selected from metazosulfuron-ethyl, and the weight ratio of the active components (A) and (B) is 100:1-1:100, preferably 50:1-1:50, preferably 25:1-1:25, more preferably 10:1-1:10, and more preferably 5:1-1: 5.
The active component (B) is selected from flumioxazin, and the weight ratio of the active components (A) to (B) is 50:1-1:50, more preferably 25:1-1:25, more preferably 10:1-1:10, and more preferably 5:1-1: 5.
The active component (B) is selected from oxyfluorfen, and the weight ratio of the active components (A) to (B) is 50:1-1:50, preferably 25:1-1:25, more preferably 10:1-1:10, and more preferably 5:1-1: 5.
The active component (B) is selected from ethoxysulfuron, and the weight ratio of the active components (A) to (B) is 1:1-50:1, preferably 1:1-40:1, more preferably 2:1-40:1, more preferably 5:1-40:1, and more preferably 8:1-30: 1.
The active component (B) is selected from quinclorac, and the weight ratio of the active components (A) to (B) is 50:1-1:50, preferably 25:1-1:25, more preferably 15:1-1:15, more preferably 10:1-1:10, and more preferably 5:1-1: 5.
The active component (B) is selected from pyraclonil, and the weight ratio of the active components (A) to (B) is 50:1-1:50, preferably 25:1-1:25, more preferably 10:1-1:10, and more preferably 5:1-1: 5.
According to the herbicidal composition of the present invention, the composition exhibits significantly improved weed control (synergistic effect) compared to the additive effect of each compound contained in the composition when used alone.
Thus, the herbicidal compositions of the present invention show a reduced application concentration of the individual compounds. But also has longer control time on weeds.
The invention also relates to the use of said herbicidal composition for weed control. The herbicidal composition of the present invention shows good control effect on the following weeds:
dicotyledonous weeds: polygonum (Polygonum), Arthropoda (Rotala), Matricaria (Lindernia), Bidens (Bidens), Columba (Eclipta), Stellaria (Elatine), Callicaria (Gratiola), Polygonum (Ludwigia), Oenanthes (Oenanthes), Potentilla (Monochoria), and Artemisia (Artemisia).
Monocotyledonous weed species: echinochloa (Echinochloa), Scirpus (Scirpus), Chenopodium (Panicum), Poa (Poa), Cyperus (Cyperus), Fimbristylis (Fimbristylis), Sagittaria (Sagittaria), Eleocharis (Elecharis), Alisma (Alisma), Lophatherum (Aneilema), Euglena (Potamogeton), Sagittaria (Sagittaria L.), Cyperus (Cyperus Linn.), etc.
In particular, the herbicidal composition of the present invention can be used for controlling the following representative weeds:
echinochloa crusgalli, Iris lactea (Scirpus juncoides), Chenopodium album (Chenopodium album L.), Ammannia arenaria H.B.K.), Cyperus heterophyllus (Cyperus difformis L.), Scirpus planiculmis (Scirpus planiculmis Schmidt), Plectrium strangulatum (Lindernia procumbens Philcox), Sparganium crispum (Cyperus rotundus L.), Alisma orientale (Alisma taceae), Sagittaria Sagittaria (Sagittaria trifoliata), Sesbania sessilifolia (Sesbania exalta), Sarcocephala japonica (Sesbania japonica), Sarcocephalus japonica (Membristipula uniflora), Monochorus vaginalis (Monochorii), Agrimonia japonica (Equisqualioides), Eleocharis japonica (Acacia oleracea), Portulaca oleracea (C. L.), Artemisia japonica (C. japonica), Portulaca oleracea L., Artemisia japonica (L.), and Portulaca oleracea L.
The use of the herbicidal composition of the present invention is not limited to the use for controlling these weeds described above, but may be used for controlling other weeds.
The invention provides the use of the herbicidal composition for controlling the germination or growth of weeds in useful plants; the useful plants are selected from wheat, barley, rye, triticale, oats, maize, rice, soybean, peanut, oilseed rape, canola, potato, sugar beet, sugarcane, cotton, flax, sorghum, pasture grasses, turf; preferably cereals (such as wheat, barley, rye, oat, corn, rice, sorghum), cotton, soybean.
The herbicidal composition of the present invention exhibits an effective weed control effect particularly against weeds in lowland. Thus, the herbicidal compositions are also useful for weed control in useful plants such as cereal crops or plantation crops, in particular for the selective control of weeds, more preferably for the control of weeds in rice crops, including rice. In particular, in rice planting, the herbicidal composition of the present invention can achieve good weed control effects shortly after rice planting and throughout the growth period of rice.
The present invention provides the use of said herbicidal composition for controlling weeds such as Polygonum (Polygonum), Arthrobacter (Rotala), Matricaria (Lindernia), Bidens (Bidens), Eclipta (Eclipta), Stellaria (Elatine), Calligonum (Gratiola), Polygonum (Ludwigia), Oenanthes (Oenanthes), Potentilla (Monochoria), Artemisia (Artemisia), Echinochloa (Echinochloa), Scirpus (Scirpus), Chenopodium (Panicum), Potentilla (Poa), Cyperus (Cyperus), Fimbristylis (Fimbristylis), Sagittaria (Sagittaria), Eleochaeta (Eleciis), Alisma (Alisma), Alisma (Alismosis), Phyllosa (Aniseton), Eupatorium (Potentilla), Fimbristylis (Populus), Sagittaria (Sagittaria), Sagitaria), Sagittaria (Sagittaria), and the like in a, wherein the synergistic ratio of the useful plants is.
The invention provides the herbicidal composition for controlling barnyard grass (Echinochloa crusgalli), Iris lactuca (Scirpus juncoides), Chenopodium album L, Ammannia arenaria H.B.K.), Ammannia arenaria L.K., Cyperus difformis L., Scirpus planiculmis L.J., Scirpus planus (Scirpus planiculmis Schmidt), Spargania crispus L.J., Alisma orientale (Alisma taceae), Pseudobulbus cremastrae (Sagittaria trifoliata), Sesbania exaltata, Mellina difficifolia, comatus (Monochoria vaginalina), Agrimonia japonica, Elephora japonica L.C.A, Agrimonia japonica, Portulaca L.B.C., Portulaca L.A, Portulaca oleraceia oleracea L.L.L., Portulaca L.L., Portulaca L.B.L., Portulaca L., Portulaca L.L., Portulaca L., Miq.f (S. A., Portulaca), Portulaca. useful for the use of Leguminosae, Portulaca. japonica (S. japonica, Portulaca. japonica, and Portulaca. japonica (S. for the use of Portulaca. japonica, Portulaca. or Portulaca. japonica, Portulaca. for the use of Portulaca. for the same, and/or the same, such as the same, and/or the same, and the same (Portulaca. for the same, such as the same, and the same, such as the same, and the same, such as the same, and the same, such as the same, and the same, or the same, and the same, such as the same, and the same, such as the same, and the same, such as the same, and the same, and the same, and the same, such as the same, and the same, such as the same, and the same, such as the same, and the same, such as the same, and the same, such as the same, and the same, such as the same, and the same, the same, wherein the active components (A) and (B) are used in a synergistically enhanced ratio.
The present invention provides the use of the herbicidal composition for controlling the germination or growth of weeds such as Echinochloa crusgalli (Echinochloa crusgalli), Chenopodium album (Chenopodium album L.), Potentilla fruticosa (Monochoria korsakowii), Cyperus difformis (Cyperus difformis L.), Monochoria vaginalis (Monochoria vagianalis), Fluoritus (Scirpus juncoides), Portulaca oleracea (Portulaca oleracea L.), Sagittaria indica (Sagittaria trifoliata), Artemisia annua (A. apiacea Hance), wherein the active components (A) and (B) are applied in synergistically enhanced proportions.
The herbicidal compositions of the present invention may be formulated in conventional formulations. The preparation form can be missible oil, aqueous suspension, oil suspension, seed treatment dry powder, seed treatment suspension, water dispersible granule, wettable powder, suspoemulsion, aerosol, coated granule, extruded granule, aqueous emulsion, microcapsule suspension-suspension, dry suspension, ultra-low volume liquid, electrostatic oil agent, gel, granule and fine granule.
The preferable preparation form of the invention can be wettable powder, missible oil, suspending agent, oil suspending agent, microcapsule, microemulsion, emulsion in water, suspension emulsion, water dispersible granule, microcapsule suspension-suspending agent and ultra-low volume liquid.
The formulations according to the invention can be prepared by mixing the active components (a) and (B) together with a spreading agent, for example a liquid diluent and/or a solid diluent, and, if desired, a surfactant, such as an emulsifier and/or a dispersant and/or a foaming agent.
Suitable liquid diluents include water or organic solvents. Such as toluene, xylene, cyclohexane, mineral oil, vegetable oil, butanol, ethylene glycol, methyl ethyl ketone, methyl isobutyl ketone, dimethylformamide, dimethyl sulfoxide, water, and the like.
Suitable solid diluents are diatomaceous earth, magnesium aluminum silicate, activated clay, kaolin, clay, gypsum, bentonite, white carbon black, light calcium carbonate, limestone, wood chips, corn starch, soluble starch, and the like.
Suitable emulsifiers may be anionic and/or nonionic emulsifiers such as alkylphenol ethoxylates, alkylphenol polyoxyethylene polyoxypropylene ethers, benzyl phenol polyoxyethylene ethers, polyoxyethylene fatty acid esters, polyoxyethylene fatty alcohol ethers, polyoxyethylene fatty amines, alkylphenol polyglycol ethers, and the like.
Suitable dispersants may be alkyl naphthalene sulfonates, bis (alkyl) naphthalene sulfonate formaldehyde condensates, naphthalene sulfonic acid formaldehyde condensates, alkylphenol polyoxyethylene phosphates, alkylphenol polyoxyethylene ether formaldehyde condensate sulfates, alkylphenol polyoxyethylene ether phosphate esters, alkylphenol polyoxyethylene ethers, castor oil ethylene oxide adducts, ethylene oxide-propylene oxide block copolymers, alkylphenol polyoxyethylene ether formaldehyde condensates, octylphenol polyoxyethylene ether sulfates and methyl cellulose. For example, sodium lignosulfonate, calcium lignosulfonate, sodium methylnaphthalenesulfonate-formaldehyde condensate, sodium naphthalenesulfonate-formaldehyde condensate, sodium methylenenaphthalenesulfonate and the like.
If appropriate, the herbicidal compositions according to the invention may also be provided with further additional components, for example protective colloids, adhesives, tackifiers, thickeners, antifreezes, antifoams, thixotropic agents, penetrants, stabilizers, sequestering agents, complex-forming agents. In general, the active ingredient may be combined with any solid or liquid additive conventionally used for formulation purposes.
Suitable thickeners are polysaccharides (e.g. xanthan gum, carboxymethylcellulose), inorganic clays (organically modified or unmodified), polycarboxylates and silicates.
Suitable anti-freeze agents are ethylene glycol, propylene glycol, urea and glycerol.
Suitable antifoams are polysiloxanes, long-chain alcohols and fatty acid salts.
Suitable binders are polyvinyl pyrrolidone, polyvinyl acetate, polyvinyl alcohol, polyacrylates and cellulose ethers.
The formulation of the present invention contains active components (a) and (B) in a total amount of 1% to 90%, preferably 5% to 90%, more preferably 10% to 80%, still more preferably 10% to 70% by weight of the herbicidal composition.
On the other hand, compositions comprising the herbicidal compositions according to the invention and one or more safeners are particularly advantageous. Suitable safeners may be selected from at least one of benoxacor (benoxacor), fenchlorazole (fenchlorazole), fenchlorazole-ethyl (fenchlorazole-ethyl), mequindox (cloquintocet-mexyl), Furilazole (Furilazole), jiecan (2-dichlomethyl-2-methyl-1, 3-dioxolane), Oxabetrinil (cyclotrinil), Oxabetrinil (Fenclorim), Flurazole (Flurazole), jiecamene (Acetamide), Isoxadifen (Isoxadifen), cyprosulfamide (Cyclopropanesulfonamide), menpyrazole-diethyl.
The weight ratio of active components (a) and (B) to safener in the herbicidal compositions generally depends on the application rate of the herbicide and the effect of the safener and can be varied within wide limits, for example in particular again within the range from 1000:1 to 1: 300. Safeners can be formulated with the active components (a) and (B) in the finished formulation or supplied and used in the form of a tank mix with the herbicidal composition.
Safeners can be used for the preliminary treatment of the seed material of the cultivated plants (dressing) or can be penetrated into the soil before or after sowing. It can also be applied separately or together with the herbicidal composition of the present invention after the plants have germinated. The treatment of the plant or seed material with the safener is in principle not influenced by the time of application of the herbicide. Weeds can also be treated by applying the herbicide and safener simultaneously (e.g., in the form of a tank mix).
The herbicidal compositions of the present invention may be applied in a conventional manner by using techniques well known to those skilled in the art. Methods of application include, but are not limited to, application to weeds or their locus, such as to the area adjacent to the plants, as well as pre-emergence, post-emergence, foliar (strewn, oriented, banded, spot, mechanical, overhead or re-growing), and application by hand, backpack, mechanical, tractor, or aerial (airplane, helicopter, drone).
The present invention provides a method of controlling the emergence or growth of weeds in useful plants comprising applying the herbicidal compositions of the present invention in the presence of the plant of the useful plant, the seed of the useful plant, or other propagating parts of the useful plant.
The present invention also provides a method of controlling weed germination or growth comprising: (i) before the weeds germinate; (ii) after the weeds germinate; or (iii) applying a herbicidally effective amount of a herbicidal composition comprising a compound of formula I and a compound II to the weeds or the locus thereof at (I) and (II).
The present invention also provides a method for controlling weeds, which comprises contacting the weeds or their growing sites with a herbicidally effective amount of said herbicidal composition. A herbicidally effective amount refers to the amount of the herbicidally active ingredient applied to control weeds.
The present invention also provides a method for controlling the germination or growth of weeds by applying the herbicidal composition of the present invention to soil to control the germination or growth of weeds.
A method for controlling the germination or growth of weeds comprises applying the herbicidal composition to the foliage of weeds to control the germination or growth of weeds.
A method for controlling the germination or growth of weeds, wherein the active ingredients (A) and (B) of the herbicidal composition of the present invention are applied to weeds or their growing field together or separately to control the germination or growth of weeds.
The active components (A) and (B) in the herbicidal composition are applied to the ground before the weeds sprout and the foliage of the weeds after the weeds sprout together or separately to control the weeds to sprout or grow.
If the herbicidal composition according to the present invention is applied to the soil surface before the weeds germinate, the seedlings of the weeds are completely prevented from germinating, or the weeds grow to the cotyledon stage, but then they stop growing, and finally die completely after two to four weeks.
If the herbicidal composition is applied to the green parts of the plants after the emergence of the weeds, the growth likewise stops sharply within a relatively short time after the treatment and the weed plants remain in the growth phase at the point in time of application or they die completely after a certain time, in such a way that competition by the weeds harmful to the useful plants is eliminated early and continuously.
A method for controlling weeds, which comprises adding the herbicidal composition of the present invention to irrigation water and applying it to weeds or their growing sites by using a ground or aerial duster, sprayer, or granule applicator.
The type of application depends in a well-known manner on the intended purpose; in any case, the technique should ensure the best possible distribution of the active ingredients in the herbicidal compositions according to the invention.
The selection of application methods, such as foliar, drench, spray, dusting, scattering, can be made according to the intended object and prevailing circumstances, depending on the nature of the formulation.
For application, it can be diluted in a conventional manner, for example, with water, to give wettable powders, emulsifiable concentrates, dispersants and water dispersible granules. For soil application granules, formulations of the broadcast granule and spray solution type are generally not diluted with other inert substances before application.
The herbicidal compositions according to the present invention may also comprise other components of various active compounds, for example selected from the group consisting of fungicides, insecticides, acaricides, nematicides, bird repellents, soil conditioners, and plant growth regulators.
The synergistic effect of the present invention allows for a reduced application rate of individual herbicides, a higher efficacy at the same application rate, control of previously untreated varieties, control of varieties tolerant or resistant to a single herbicide or to multiple herbicides, an extended application period and/or a reduced number of individual applications required; and for the user, a more economically and ecologically advantageous weed control system is obtained.
The herbicidal compositions according to the invention, the active components (A) and (B) in combination act together in a particularly advantageous manner. The simultaneous (i.e. joint or separate) or sequential application of active ingredients (a) and (B) gives an enhanced weed control effect compared to the control rates possible with the individual compounds, the unexpected effect being a true synergistic effect, not just an addition of the activities.
Detailed Description
Biological test example
Dissolving active component (A) (compound of formula I) and active component (B) in the table with acetone to prepare single-dose mother liquor, and diluting with 0.1% Tween-80 aqueous solution to desired concentration.
And (4) performing an indoor pot culture test. And respectively sowing the weed seeds to be detected in plastic pots with the diameter of 20 cm. And carrying out closed spraying treatment on the soil two days after sowing. After the pesticide is applied, water is fed from the bottom of the pot to keep the soil moist, and no water is accumulated on the surface of the soil. And setting clear water for comparison; each treatment was 3 replicates. And weighing the fresh weight of the overground part 21 days after the pesticide application, and respectively calculating the fresh weight control effect.
Fresh weight control effect (%) = (blank control weed fresh weight-medicament treatment weed fresh weight)/blank control weed fresh weight x 100
The expected effect of a particular combination of two active compounds can be achieved using the so-called "Colby's formula" (cf. S.R. Colby, "working Synergistic and antitumor Responses of pharmaceutical compositions", Weeds 1967,15, 20-22)
The expected value for Colby was calculated using the formula:
x is the controlling effect of the active ingredient (A) when the dose is mg/ha or the concentration is mppm;
y is the control effect of the active ingredient (B) at a dose of ng/ha or at a concentration of nppm;
e is the expected value for active ingredient (A) and active ingredient (B) at doses of m and ng/ha or at concentrations of m and nppm;
when the actually tested weed control effect is larger than the control effect expected according to the Colby formula, the mixture is over-added, namely has a synergistic effect.
Control of barnyard grass after Table 121D
Control of monochoria vaginalis in Table 221D
Prevention and treatment of chenopodium album (L.) kurz after table 321D
Control of purslane after Table 421D
As can be seen from the test results in tables 1 to 4, the herbicidal composition of the present invention has a significantly better herbicidal effect than the herbicidal effect obtained by applying the active ingredient (a) and the active ingredient (B) alone, and has a significantly enhanced herbicidal effect.
Claims (17)
1. A herbicidal composition, comprising active ingredients (a) and (B), wherein the active ingredient (a) is a compound of formula I, and the active ingredient (B) is one selected from the group consisting of: flumioxazin, pyraclonil; the weight ratio of the active components (A) to (B) is 100:1-1: 100;
2. The herbicidal composition according to claim 1, wherein the active ingredients (a) and (B) are combined in such a manner that:
(2) a compound of formula I + flumioxazin;
(6) compound of formula I + pyraclonil.
3. A herbicidal composition according to claim 1, characterized in that: the active component (B) is selected from flumioxazin, and the weight ratio of the active component (A) to the active component (B) is 50:1-1: 50.
4. A herbicidal composition according to claim 1, characterized in that: the active component (B) is selected from flumioxazin, and the weight ratio of the active component (A) to the active component (B) is 25:1-1: 25.
5. A herbicidal composition according to claim 1, characterized in that: the active component (B) is selected from flumioxazin, and the weight ratio of the active component (A) to the active component (B) is 10:1-1: 10.
6. A herbicidal composition according to claim 1, characterized in that: the active component (B) is selected from flumioxazin, and the weight ratio of the active component (A) to the active component (B) is 5:1-1: 5.
7. A herbicidal composition according to claim 1, characterized in that: the active component (B) is selected from pyraclonil, and the weight ratio of the active components (A) to (B) is 50:1-1: 50.
8. A herbicidal composition according to claim 1, characterized in that: the active component (B) is selected from pyraclonil, and the weight ratio of the active components (A) to (B) is 25:1-1: 25.
9. A herbicidal composition according to claim 1, characterized in that: the active component (B) is selected from pyraclonil, and the weight ratio of the active components (A) to (B) is 10:1-1: 10.
10. A herbicidal composition according to claim 1, characterized in that: the active component (B) is selected from pyraclonil, and the weight ratio of the active components (A) to (B) is 5:1-1: 5.
11. A herbicidal composition according to claim 1, characterized in that it is formulated as wettable powders, emulsifiable concentrates, suspensions, oil suspensions, microcapsules, microemulsions, aqueous emulsions, suspoemulsions, water dispersible granules, microcapsule suspension-suspensions, ultra low volume liquids.
12. Use of the herbicidal composition according to claim 1 for controlling the germination or growth of weeds in useful plants selected from the group consisting of wheat, barley, rye, triticale, oats, corn, rice, soybean, peanut, oilseed rape, kala, potato, sugar beet, sugarcane, cotton, flax, sorghum, pasture grasses, lawns.
13. Use of the herbicidal composition of claim 1 for controlling the germination or growth of weeds in a rice crop.
14. A method of controlling weed germination or growth, comprising: (i) before the weeds germinate; (ii) after the weeds germinate; or (iii) applying a herbicidally effective amount of the herbicidal composition of claim 1 to the weeds or the locus thereof at (i) and (ii).
15. A method for controlling the germination or growth of weeds, characterized in that the herbicidal composition according to claim 1 is applied to soil to control the germination or growth of weeds.
16. A method for controlling the germination or growth of weeds, characterized in that the herbicidal composition according to claim 1 is applied to the foliage of weeds to control the germination or growth of weeds.
17. A method for controlling the germination or growth of weeds, characterized in that the herbicidal composition according to claim 1 is applied to the ground before the weeds germinate and to the foliage of the weeds after the weeds germinate to control the germination or growth of the weeds.
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| CN202010012738.5A CN113142237A (en) | 2020-01-07 | 2020-01-07 | Weeding composition |
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| CN202210047031.7A Active CN114287435B (en) | 2020-01-07 | 2020-01-07 | Weeding composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107114384A (en) * | 2017-05-27 | 2017-09-01 | 北京科发伟业农药技术中心 | A kind of Herbicidal combinations containing pyraclonil |
| CN112889830A (en) * | 2019-12-04 | 2021-06-04 | 江苏龙灯化学有限公司 | Weeding composition |
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| JP2002529379A (en) * | 1998-11-10 | 2002-09-10 | シンジェンタ パーティシペーションズ アクチェンゲゼルシャフト | Herbicide composition |
| CN108064849A (en) * | 2016-11-15 | 2018-05-25 | 江苏龙灯化学有限公司 | A kind of Herbicidal combinations |
| CN106993626A (en) * | 2017-05-19 | 2017-08-01 | 北京科发伟业农药技术中心 | A kind of Herbicidal combinations of Han Huan Wu Evil humulones and furans sulphur humulone |
| CN107183045A (en) * | 2017-05-19 | 2017-09-22 | 北京科发伟业农药技术中心 | A kind of Herbicidal combinations of Han Huan Wu Evil humulones |
| CN106982845A (en) * | 2017-05-19 | 2017-07-28 | 北京科发伟业农药技术中心 | A kind of Herbicidal combinations containing the Evil humulones of ring penta and three azole amides |
| CN108477197A (en) * | 2018-06-04 | 2018-09-04 | 山东耘歌生物科技有限公司 | A kind of effervescent formulation containing Huan Wu Evil humulones, ethoxysulfuron and mefenacet |
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- 2020-01-07 CN CN202210047080.0A patent/CN114271287B/en active Active
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107114384A (en) * | 2017-05-27 | 2017-09-01 | 北京科发伟业农药技术中心 | A kind of Herbicidal combinations containing pyraclonil |
| CN112889830A (en) * | 2019-12-04 | 2021-06-04 | 江苏龙灯化学有限公司 | Weeding composition |
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| CN113142237A (en) | 2021-07-23 |
| CN114271287B (en) | 2023-10-20 |
| CN114287436A (en) | 2022-04-08 |
| CN114271287A (en) | 2022-04-05 |
| CN114287435B (en) | 2023-10-20 |
| CN114287436B (en) | 2023-10-31 |
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