CN112889830A - Weeding composition - Google Patents
Weeding composition Download PDFInfo
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- CN112889830A CN112889830A CN201911225594.5A CN201911225594A CN112889830A CN 112889830 A CN112889830 A CN 112889830A CN 201911225594 A CN201911225594 A CN 201911225594A CN 112889830 A CN112889830 A CN 112889830A
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- Prior art keywords
- flumioxazin
- weeds
- active component
- spp
- weight ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- 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
-
- 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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P13/00—Herbicides; Algicides
Abstract
The invention relates to a weeding composition, which comprises an active component (A) flumioxazin and an active component (B) of one or more of oxaziclomefone, oxadiargyl, pentoxazone, triafamone, simetryn, thiobencarb, mefenacet, fentrazamide, pyraclonil, benzobicylon and metazosulfuron, wherein the weight ratio of the active component (A) to the active component (B) is 100:1-1: 100. The invention also relates to the use of said 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; particularly useful for controlling the germination or growth of weeds in rice crops.
Description
Technical Field
The invention relates to a weeding composition, belonging to the field of crop protection; the weeding composition is particularly suitable for preventing and controlling weeds in soybeans, corns, peanuts, cotton, sugarcanes, potatoes and paddy fields.
Background
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.
Flumioxazin (Flumioxazin) is described in EP170191C and has the formula I. Flumioxazin is not satisfactory in all respects for its herbicidal properties.
Disclosure of Invention
The present invention has been made in view of the above-mentioned disadvantages, and 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 action and long-lasting action, and management of resistance to delay resistance.
The invention provides a weeding composition, which comprises an active component (A) flumioxazin and an active component (B) of one or more of oxaziclomefone, oxadiargyl, pentoxazone, triafamone, simetryn, thiobencarb, mefenacet, fentrazamide, pyraclonil, benzobicylon and metazosulfuron, wherein the weight ratio of the active component (A) to the active component (B) is 100:1-1: 100.
The active component (B) is selected from oxaziclomefone; the weight ratio of the flumioxazin to the oxaziclomefone is 50:1-1:50, preferably 25:1-1: 25; more preferably from 10:1 to 1: 10; more preferably 5:1 to 1: 5.
The active component (B) is selected from oxadiargyl; the weight ratio of the flumioxazin to the oxadiargyl is 10:1-1:50, preferably 5:1-1:50; more preferably 5:1 to 1: 30; more preferably 5:1 to 1:25, more preferably 5:1 to 1: 15.
The active component (B) is selected from pentoxazone; the weight ratio of the flumioxazin to the pentoxazone is 10:1-1:50, preferably 5:1-1:50; more preferably 5:1 to 1:50; more preferably from 5:1 to 1: 25.
The active component (B) is selected from triazolam; the weight ratio of the flumioxazin to the mefenacet is 5:1-1:50, preferably 5:1-1: 25; more preferably 5:1 to 1: 10.
The active component (B) is selected from simetryn; the weight ratio of the flumioxazin to the simetryn is 1:1-1:100, preferably 1:5-1: 50; more preferably 1:5 to 1: 30; more preferably 1:5 to 1: 20.
The active component (B) is selected from erysipelas; the weight ratio of the flumioxazin to the benthiocarb is 1:1-1:100, preferably 1:5-1: 100; more preferably 1:10 to 1:80; more preferably 1:10 to 1:60, still more preferably 1:10 to 1: 50.
The active component (B) is selected from mefenacet; the weight ratio of the flumioxazin to the mefenacet is 1:1-1:100, preferably 1:5-1: 100; more preferably 1:10 to 1:80; more preferably 1:10 to 1:50, more preferably 1:10 to 1: 35.
The active component (B) is selected from fentrazamide; the weight ratio of the flumioxazin to the fentrazamide is 1:1-1:50, preferably 1:5-1: 40; more preferably 1:5 to 1: 30; more preferably 1:5 to 1: 25.
The active component (B) is selected from pyraclonil; the weight ratio of the flumioxazin to the pyraclonil is 1:1-1:100, preferably 1:1-1:50; more preferably 1:1 to 1: 30.
The active component (B) is selected from the group consisting of benzobicyclon; the weight ratio of the flumioxazin to the benzobicyclon is 1:1-1:80, preferably 1:5-1: 50; more preferably 1:5 to 1: 30; more preferably 1:5 to 1: 20.
The active component (B) is selected from metazosulfuron; the weight ratio of the flumioxazin to the metazosulfuron is 20:1-1:20, preferably 10:1-1: 10; more preferably 5:1 to 1: 10; more preferably 5:1 to 1: 5.
It has been found that flumioxazin in combination with oxaziclomefone, oxadiargyl, pentoxazone, triafamone, simetryn, thiodan, mefenacet, fentrazamide, pyraclonil, benzobicylon, metazosulfuron work in a particularly advantageous manner.
The simultaneous application of active ingredients (a) and (B) or the 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 a sum of the activities.
Thus, the herbicidal compositions of the present invention significantly reduce the applied concentration of each individual compound. But also has longer control time on weeds.
Firstly, in the herbicidal compositions of the invention, the application rate of the individual compounds is reduced while still maintaining a good level of action; secondly, the herbicidal compositions of the present invention achieve a high level of control of weeds when the individual compounds become ineffective from an agronomic standpoint at low application rates.
The weeding composition provided by the invention remarkably widens the weed control spectrum of the compound. The combinations of the invention not only maintain excellent control of weeds in useful plants, but also allow greater flexibility in succeeding crops.
The herbicidal composition of the present invention exhibits effective weed control effects on both dry-land weeds and paddy-field weeds. Thus, the herbicidal compositions can be used for weed control in useful plants such as wheat, barley, rye, triticale, oats, corn, peanut, soybean, cotton, sugarcane, potato, rice crops or plantations such as citrus orchards, vineyards.
Accordingly, the present 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, peanuts, soybeans, cotton, sugarcane, potatoes, rice crops, citrus, grapes.
Particularly preferred useful plants of the invention are corn, soybean, peanut, sugarcane, cotton, rice; still more particularly preferred are rice crops.
The herbicidal compositions of the present invention can be used to control a large number of agronomically important weeds, such as:
grass weeds, for example, the genera Alopecurus (Alopecurus species), Poa (Poa-species), Alopecurus (Apera-species), Avena (Avena spp.), Lolium (Lolium-species), Bromus (Bromus-species), Echinochloa (Echinochloa spp.), Euphorbia (Leptochloa spp.), Digitaria (Digitaria spp.), Setaria (Setaria spp.), Brachiaria (Brachiaria spp.) and Anacardia (Isachum spp.);
broad-leaved weeds, such as cleavers (galium spp.), episesa (Lamium spp.), Geranium (Geranium spp.), Solanum (Solanum spp.), salmonna (Veronica spp.), Viola (Viola spp.), anthurium (Viola tricolor), eclipta (Alchemilla spp.), Kochia (Kochia spp.), larch (Stellaria spp.), Polygonum (Polygonum spp.), Matricaria (Matricaria spp.), buergerianum (Bupleurum spp.), Chenopodium (Chenopodium spp.), callianthus (Amarhutus spp.), bovine colostrum (Galinsoma spp.), monocrotala spp.), pelargonium spp., Solidana (Rotunia spp.), and Rotunia (Rotunica spp.), mustard (Rotunia spp.), and Rotunica (Rotunica spp.) Velvet leaf (limnochalis spp.), cuspid (sphaercella spp.), Commelina (Commelina spp.), Commelina (Commelina spp.), Ludwigia spp, trefoil (Bidens pilosa), and Stellaria (Elatine spp.); the combination also controls annual and perennial sedges, for example, skimmia (Scirpus spp.) (e.g., firefly iris (Scirpus juncoides)), arrowhead (Sagittaria spp.), Cyperus (Cyperus spp.), and Fimbristylis spp.).
The herbicidal compositions according to the invention are particularly suitable for controlling weeds in fields of useful plants, for example:
wheat crops, examples of weeds include physalis (Alopecurus Species), precocious gramineae (Poa-Species), alismatis (Apera-Species), Avena (Avena spp.), Lolium (Lolium-Species), brome (broous-Species), Fumaria spp., Myosotis (Myosotis spp.), galium (galium spp.), Geranium (Geranium spp.) (e.g. Geranium rotundifolium), spera (Veronica spp.), Viola (Viola spp.), ganoderma (e.g. trichrome), sesamum (Lamium spp.), Lamium spp.) (stemona spp.), stemona (stemona spp.), rhododendron (rhododendron spp.) (e.g. Viola spp.), echinacea (Polygonum spp.), rhododendron (rhododendron spp.), rhododendron (alospora spp.), rhododendron (e.g. rhododendron spp.), rhododendron (alospora spp.), rhododendron (kosporum spp.), rhododendron (e., Camelina (Capsella spp.), Chenopodium (Chenopodium spp.) and;
rice crops-in which examples of weeds include barnyard grass (Echinochloa spp.), leptospora Leptochloa spp.), Digitaria spp (Digitaria spp.), Setaria spp (Setaria spp.), Brachiaria spp.) and comfrey (ischeama spp.), primula spp (Monochoria spp.), primula spp (Lindernia spp.), syringa spp (Ludwigia spp.), zoysia (Elatine spp.), Scirpus spp. (e.g. irilla (sciureus spp.), Scirpus spp.), Cyperus spp. (e.g. iricus (Scirpus spp.), Cyperus spp.), cypress spp. (butus spp.), bulrush spp.), burymbola spp., cissus spp., zygium spp. (e.g. iricus spp.), pterospiricus spp., cissus (cornia spp.), pterocarpus spp.), sedge spp.), sargasp (phyta spp.), pterocarpus spp. (cornus spp.), pterocarpus spp.);
maize-wherein examples of weeds include Echinochloa (Echinochloa spp.), Digitaria (Digitaria spp.), Setaria (Setaria spp.), Cyperus (Cyperus spp.), Kochia (Kochia spp.), Matricaria (Matricaria spp.), Chenopodium (Chenopodium spp.), Solanum (Solanum spp.), Polygonum (Polygonum spp.), Amaranthus (Amaranthus spp.) and; and-sugar cane-wherein examples of weeds include barnyard grass (Echinochloa spp.), Digitaria (Digitaria spp.), Setaria (Setaria spp.), Brachiaria (Brachiaria spp.), Kochia (Kochia spp.) and amaranthus (Amarathus spp.).
In particular, the herbicidal compositions of the present invention are particularly suitable for controlling the germination or growth of undesirable weeds in rice fields:
echinochloa crusgalli (Echinochloa crusgalli), Ammannia arenaria H.B.K., Cyperus difformis L., Scirpus planiculmis (Scirpus planiculmis), Plectrum procumbens (Lindernia procumbens Philcox), Sparganium crispum (Cyperus rotundus L.), Alisma orientale (Alisma orientale), Sagittaria indica (Sagittaria trifoliata), Sesbania sativa (Sesbania exaltata), Ecklonia cava (Commelina difficifolia), Monochorus variegatus (Monochoria variegalis), Equisetum arvensis (Equisetum ramorum), Commelina communis (Herba), Water buffalous (Mpharia rugosa), Eleocharis sativa (Eleocharitis), Eleocharis crispus (Rhamnus crispus L.), Eleophycus L., Irisea flavus L., Irisea (Ruisea flavus L.), and Rhynchus chinensis (Rosemarrhiza officinalis).
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 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 active components (a) and (B) to the weeds or the locus thereof at (i) and (ii).
The present invention also provides a method for controlling the germination or growth of weeds, comprising contacting the weeds or their locus 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, wherein the herbicidal composition of the present invention is applied to weeds to control the germination or growth of weeds.
A method for controlling undesired germination or growth, wherein the active ingredients (A) and (B) in the herbicidal composition of the present invention are applied to weeds or their growing field together or individually to control their germination or growth.
A method for controlling weeds, wherein the active ingredients (A) and (B) in the herbicidal composition of the present invention are applied to the soil before the emergence of weeds, the foliage of weeds after the emergence thereof, together or separately, to control the emergence or growth of weeds.
The term "weeds" are those plants that affect the growth and quality of useful crop plants. Including grasses and broadleaf weeds.
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 weeds after 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 weeds harmful to the useful plants is eliminated early and continuously.
Although the active components (a) and (B) already exhibit good or even sufficient selectivity in a large number of crops, in principle phytotoxicity to the crop plants may occur in some crops, in particular also in combination with other less selective herbicides. Compositions comprising the herbicidal compositions according to the present invention together with one or more safeners are particularly advantageous. The safeners are used in antidotally effective amounts, for example to reduce the phytotoxic side effects of the herbicides used in economically important crops or in fruit plantations (plantation crops). For example in wheat, barley, rye, triticale, oats, maize, peanut, soybean, cotton, sugarcane, potato, rice crops or plantations such as citrus orchards, vineyards.
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).
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 application rate can vary within wide limits and depends on the soil properties, the application method (pre-emergence or post-emergence, etc.), the crop plants, the weeds to be controlled, the prevailing climatic conditions and other factors controlled by the application method, the application time and the target crop. The active ingredients of the herbicidal compositions of the present invention may generally be applied in amounts of from 1 to 2000g/ha, preferably from 10 to 100 g/ha.
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 formulations according to the invention can be prepared by mixing the active components (A) and (B) together with liquid diluents and/or solid diluents and, if desired, surfactants such as emulsifiers and/or dispersants and/or foaming agents.
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.
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.
For water dispersible granules, the person skilled in the art is familiar with the use of corresponding auxiliaries for carrying out the invention. The dispersant is selected from polycarboxylate, lignosulfonate, alkyl naphthalene sulfonate, alkylphenol polyoxyethylene ether and ethylene oxide/propylene oxide block polyether; the wetting agent is selected from alkyl sulfate, alkyl sulfonate, naphthalene sulfonate, sodium lignosulfonate, fatty alcohol-polyoxyethylene ether and alkylphenol polyoxyethylene ether; the disintegrating agent is selected from ammonium sulfate, sodium chloride, ammonium chloride, urea, sucrose, glucose, carboxymethyl cellulose, soluble starch, and polyvinylpyrrolidone; the binder is selected from polyvinyl alcohol, soluble starch, dextrin, xanthan gum, carboxymethyl (ethyl) cellulose; the filler is selected from diatomite, kaolin, white carbon black, light calcium carbonate, talcum powder, attapulgite and pottery clay.
For wettable powders, the auxiliaries which can be used are: the dispersant is selected from polycarboxylate, lignosulfonate and alkyl naphthalene sulfonate; the wetting agent is selected from alkyl sulfate, alkyl sulfonate and naphthalene sulfonate; the filler is selected from ammonium sulfate, urea, sucrose, glucose, diatomaceous earth, kaolin, white carbon black, light calcium carbonate, talcum powder, attapulgite and argil.
For the suspending agents, usable are: the dispersant is selected from polycarboxylate, lignosulfonate and alkyl naphthalene sulfonate; the emulsifier is selected from alkylphenol formaldehyde resin polyoxyethylene ether, sorbitan monostearate), sorbitan monostearate polyoxyethylene ether, and phenethyl phenol polyoxyethylene polyoxypropylene ether; the wetting agent is selected from alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkylphenol polyoxyethylene ether phosphate, phenethyl phenol polyoxyethylene ether phosphate, alkyl sulfate, alkyl sulfonate and naphthalene sulfonate; the thickener is selected from xanthan gum, polyvinyl alcohol, bentonite, and magnesium aluminum silicate; the preservative is selected from formaldehyde, benzoic acid, sodium benzoate; the defoaming agent is an organic silicon defoaming agent; the antifreeze agent is selected from ethylene glycol, propylene glycol, glycerol, urea, and inorganic salts (such as sodium chloride).
For dispersible oil suspensions, the adjuvants that can be used are: the dispersant is selected from polycarboxylate, lignosulfonate, alkyl naphthalene sulfonate, castor oil polyoxyethylene ether, alkylphenol formaldehyde resin polyoxyethylene ether, sorbitan monostearate polyoxyethylene ether and phenethyl phenol polyoxyethylene polyoxypropylene ether; the wetting agent is selected from alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, alkylphenol polyoxyethylene ether phosphate, phenethyl phenol polyoxyethylene ether phosphate, alkyl sulfate, alkyl sulfonate and naphthalene sulfonate; the thickener is selected from white carbon black, polyvinyl alcohol, bentonite and magnesium aluminum silicate; the antifreeze agent is selected from ethylene glycol, propylene glycol, glycerol, urea, and inorganic salts (such as sodium chloride); the stabilizer is selected from epoxidized soybean oil, epichlorohydrin and triphenyl phosphate; the dispersion medium is selected from soybean oil, oleum Rapae, oleum Maydis, methyl oleate, diesel oil, engine oil, and mineral oil.
The formulation of the present invention contains active components (a) and (B) in a total amount of 1% to 90%, preferably 5% to 80%, more preferably 5% to 70%, still more preferably 10% to 60% by weight of the herbicidal composition.
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 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.
When applied, the formulations may be in commercial form and, if desired, diluted in conventional manner, for example with water as wettable powders, emulsifiable concentrates, dispersants and water dispersible granules. For powders, soil application granules, broadcast granules and spray solution type formulations, it is common practice not to dilute them with other inert substances until use.
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 invention allows a reduction in the application rate of the individual herbicides, a higher efficacy at the same application rate, control of species which have not been controlled, control of species which are tolerant or resistant to a single herbicide or to a plurality of herbicides, an extended application period and/or a reduction in the number of individual applications required; and for the user, a more economically and ecologically advantageous weed control system is obtained.
Detailed Description
Biological test example
The method comprises the following steps:
dissolving flumioxazin 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 the required concentration.
And respectively dry-sowing the weed seeds to be detected in plastic pots with the diameter of 20cm, and covering with soil for 1 cm. The next day, uniformly applying the prepared to-be-detected medicament to the surface of the soil by adopting a DeVries, SB6-202 walking type spray tower, and setting clear water for comparison; each treatment was 3 replicates. And (3) placing the treated test material in a ventilating place for naturally shade drying for 2-3h, not spraying the test material blades in 3d after treatment, supplying water in an infiltration irrigation mode, and placing the treated test material in a greenhouse for management. 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.
TABLE 1 control of barnyard grass
TABLE 2 control of abnormal Cyperus rotundus
TABLE 3 control of Euphorbiae Lathyridis semen
TABLE 4 control of snakehead gut
The test results show that the weeding effect of the combination of the flumioxazin and the active component (B) is obviously better than that of the combination of the flumioxazin and the active component (B) which are applied independently, and the weeding composition has obvious gain effect.
Claims (10)
1. A weeding composition is characterized by comprising an active component (A) flumioxazin and an active component (B) which is one or more of oxaziclomefone, oxadiargyl, pentoxazone, triafamone, simetryn, thiodan, mefenacet, fentrazamide, pyraclonil, benzobicylon and metazosulfuron, wherein the weight ratio of the active component (A) to the active component (B) is 100:1-1: 100.
2. The herbicidal composition according to claim 1, characterized in that the combination of active components (a) and (B) is:
(1) flumioxazin + oxaziclomefone;
(2) flumioxazin + oxadiargyl;
(3) flumioxazin + pentoxazone;
(4) flumioxazin + mefenacet;
(5) flumioxazin + simetryn;
(6) flumioxazin + thiobencarb;
(7) flumioxazin + mefenacet;
(8) flumioxazin + fentrazamide;
(9) flumioxazin + pyraclonil;
(10) flumioxazin + mesotrione;
(11) flumioxazin + metazosulfuron.
3. A herbicidal composition according to claim 1, characterized in that the active component (B) is selected from oxaziclomefone, the weight ratio of flumioxazin to oxaziclomefone being 50:1-1:50, preferably 25:1-1:25, more preferably 10:1-1:10, more preferably 5:1-1: 5;
the active component (B) is selected from oxadiargyl, and the weight ratio of the flumioxazin to the oxadiargyl is 10:1-1:50, preferably 5:1-1:50, more preferably 5:1-1:30, more preferably 5:1-1:25, more preferably 5:1-1: 15;
the active component (B) is selected from pentoxazone, and the weight ratio of the flumioxazin to the pentoxazone is 10:1-1:50, preferably 5:1-1:50, more preferably 5:1-1: 25;
the active component (B) is selected from mefenacet, and the weight ratio of the flumioxazin to the mefenacet is 5:1-1:50, preferably 5:1-1:25, more preferably 5:1-1: 10;
the active component (B) is selected from simetryn, and the weight ratio of the flumioxazin to the simetryn is 1:1-1:100, preferably 1:5-1:50, more preferably 1:5-1:30, more preferably 1:5-1: 20;
the active component (B) is selected from the group consisting of prosulfocarb and prosulfocarb in a weight ratio of 1:1-1:100, preferably 1:5-1:100, more preferably 1:10-1:80, more preferably 1:10-1:60, more preferably 1:10-1: 50;
the active component (B) is selected from mefenacet, and the weight ratio of the flumioxazin to the mefenacet is 1:1-1:100, preferably 1:5-1:100, more preferably 1:10-1:80, more preferably 1:10-1:50, more preferably 1:10-1: 35;
the active component (B) is selected from fentrazamide, and the weight ratio of the flumioxazin to the fentrazamide is 1:1-1:50, preferably 1:5-1:40, more preferably 1:5-1:30, more preferably 1:5-1: 25;
the active component (B) is selected from pyraclonil, and the weight ratio of the flumioxazin to the pyraclonil is 1:1-1:100, preferably 1:1-1:50, more preferably 1:1-1: 30;
the active component (B) is selected from the group consisting of benzobicyclon, and the weight ratio of the flumioxazin to the benzobicyclon is 1:1-1:80, preferably 1:5-1:50, more preferably 1:5-1:30, more preferably 1:5-1: 20;
the active component (B) is selected from metazosulfuron, and the weight ratio of the flumioxazin to the metazosulfuron is 20:1-1:20, preferably 10:1-1:10, more preferably 5:1-1:10, and more preferably 5:1-1: 5.
4. 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.
5. 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, peanut, soybean, cotton, sugarcane, potato, rice, citrus, grapes.
6. Use of the herbicidal composition of claim 1 for controlling weed germination or growth in crops of rice, soybean, corn, cotton, peanut.
7. 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).
8. 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.
9. A method for controlling the germination or growth of weeds, characterized in that the herbicidal composition according to claim 1 is applied to weeds or their growing field to thereby control the germination or growth of weeds.
10. A method for controlling the germination or growth of weeds, characterized in that the herbicidal composition according to claim 1 is applied to the soil before the germination of weeds, to the foliage of weeds after the germination of weeds, to control the germination or growth of weeds.
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CN202210015128.XA CN114342945A (en) | 2019-12-04 | 2019-12-04 | Weeding composition |
CN202210014750.9A CN114342944B (en) | 2019-12-04 | 2019-12-04 | Weeding composition |
CN201911225594.5A CN112889830A (en) | 2019-12-04 | 2019-12-04 | Weeding composition |
CN202310521695.7A CN116508776A (en) | 2019-12-04 | 2019-12-04 | Weeding composition |
CN202210014748.1A CN114342943A (en) | 2019-12-04 | 2019-12-04 | Weeding composition |
CN202310913668.4A CN116889231A (en) | 2019-12-04 | 2019-12-04 | Weeding composition |
CN202310913713.6A CN116889230A (en) | 2019-12-04 | 2019-12-04 | Weeding composition |
CN202210960508.0A CN115251073A (en) | 2019-12-04 | 2019-12-04 | Weeding composition |
CN202310521696.1A CN116491514A (en) | 2019-12-04 | 2019-12-04 | Weeding composition |
CN202310913745.6A CN116889233A (en) | 2019-12-04 | 2019-12-04 | Weeding composition |
CN202310913642.XA CN116889232A (en) | 2019-12-04 | 2019-12-04 | Weeding composition |
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CN115251073A (en) | 2022-11-01 |
CN114342945A (en) | 2022-04-15 |
CN116508776A (en) | 2023-08-01 |
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CN116491515A (en) | 2023-07-28 |
CN116491514A (en) | 2023-07-28 |
CN114342943A (en) | 2022-04-15 |
CN114342944B (en) | 2024-02-02 |
CN116889232A (en) | 2023-10-17 |
CN116889233A (en) | 2023-10-17 |
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CN116889230A (en) | 2023-10-17 |
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