CN111820232A - Weeding composition containing mesosulfuron and isoproturon - Google Patents
Weeding composition containing mesosulfuron and isoproturon Download PDFInfo
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- CN111820232A CN111820232A CN201910309731.7A CN201910309731A CN111820232A CN 111820232 A CN111820232 A CN 111820232A CN 201910309731 A CN201910309731 A CN 201910309731A CN 111820232 A CN111820232 A CN 111820232A
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- isoproturon
- mesosulfuron
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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
- 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<
- A01N47/30—Derivatives containing the group >N—CO—N aryl or >N—CS—N—aryl
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Abstract
The invention relates to a weeding composition containing mesosulfuron-methyl and isoproturon, wherein the weight ratio of the mesosulfuron-methyl to the isoproturon is 1:25-1: 500. The invention also relates to the use of the herbicidal composition for controlling undesired plants selected from the group consisting of alopecurus, bromela, lolium, aegilops, cleavers, descurainia, agrimonia, chickweed, capsella; the useful crop is selected from wheat, barley, rye, triticale, oat, corn, rice, soybean, peanut, oilseed rape, kala, potato, sugar beet.
Description
Technical Field
The invention relates to the field of agriculture, in particular to a weeding composition containing mesosulfuron and isoproturon and application thereof in controlling undesirable plant germination or growth.
Background
The current physical measures for farmland weeds are:
the crop rotation is adopted, the external ecological environment condition of the life of the weeds is changed by changing the crop planting, and the harm of the weeds can be reduced.
Deep ploughing and land preparation, namely turning over and burying the weed seeds scattered on the soil surface in the deep layer of the soil in the previous year by deep ploughing so that the weed seeds cannot germinate and emerge, cutting off underground rootstocks or turning over the rootstocks on the surface to expose and sun the rootstocks for death.
Weeds are removed, the weeds around the weeds are one of main sources of the weeds in the field, and the weeds are brought into the field through wind power, running water and movement of people and livestock or spread to the field through underground roots and stems, so the weeds are removed and prevented from spreading.
The use of chemical herbicides is one of the important hallmarks of modern agriculture. In recent years, the amount of herbicides sold has increased year by year, and the application area has also expanded year by year. However, with the continuous use of a large area of a large number of herbicide varieties, many problems arise, such as a single mode of action of a single herbicide, a short duration of action, and the like. The situation of herbicide resistant weeds is becoming more common, especially with the problem of resistance of older weeds. Accordingly, there is a need for continued improvements in herbicide activity, activity spectrum, application rates, compatibility with useful plants, and control of resistant weed biotypes.
Disclosure of Invention
It is an object of the present invention to provide herbicidal compositions which exhibit enhanced herbicide control of undesirable plants and/or have improved compatibility with crops of useful plants.
It is an object of the present invention to provide a herbicidal composition which provides weed control comparable to that of the individual compounds at significantly reduced application rates.
It is an object of the present invention to provide herbicidal compositions which provide significantly improved weed control at application rates comparable to those of the individual compounds.
It is still another object of the present invention to provide the use of a herbicidal composition for effective control of herbicide resistant weeds.
It is a further object of the present invention to provide a herbicidal composition for use in controlling herbicide resistant weeds which has comparable weed control efficacy at significantly reduced application rates as compared to the individual compounds.
It is a further object of the present invention to provide a herbicidal composition which, in use for controlling herbicide resistant weeds, provides significantly improved weed control at application rates comparable to the application rates of the individual compounds.
The present invention surprisingly found that the combination of mesosulfuron and isoproturon provides a synergistic weed control effect.
It has also been surprisingly found that the combination of mesosulfuron and isoproturon also exhibits good crop compatibility, i.e. the combined application of mesosulfuron and isoproturon in a crop does not result in increased damage to the crop as compared to the application of mesosulfuron and isoproturon alone; particularly, the compound has good crop compatibility in wheat, barley, rye, triticale, oat, corn, rice, soybean, peanut, oilseed rape, kala, potato and sugar beet crops.
The present invention has also surprisingly found that the combination of mesosulfuron and isoproturon exhibits an unexpectedly outstanding effect in combating undesired plants of the genera Aleurea, Bromus, Lolium, Galium, Descurainia, Alternaria, Stellaria, Capsella. Especially in the control of undesirable plants such as physalis pubescens (alopecurus japonica stem.) or chajavanica (latanapogonoides major.), chickweed (malcarphiumaquaticum (L.) Fries), brome (broomusjaponicum thunb. ex Murr.), arthrocele (aeglibos (grace), shepherd's purse (Capsella bursa-passeris (lin.) Medic.), cleavers (Galiumaparine L. var. tenum gren. et.)) Rebb. exantl.) synergistic effects are shown at a lower rate than when each compound is applied alone.
The synergistic effect can result in a reduced application rate of the 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 reduction in the number of individual applications required; and for the user, a more economically and ecologically advantageous weed control system is obtained.
The invention provides a weeding composition containing mesosulfuron and isoproturon, wherein the weight ratio of the mesosulfuron to the isoproturon is 1:25-1:500, preferably 1:50-1:400, further preferably 1:50-1:200, more preferably 1:100-1:200, and more preferably 1:99,1: 100.
The weight ratio of the mesosulfuron-methyl to the isoproturon can also be 1:25,1:50,1:55,1:60,1:65,1:70,1:75,1:80,1:85,1:90,1:91,1:92,1:93,1:94,1:95,1:96,1:97,1:98,1:99,1:100,1:101,1:102,1:103,1:104,1:105,1:106,1:107,1:108,1:109,1:110,1:115,1:120,1:125,1:130,1:135,1:140,1:145,1:150,1:200,1:250,1:300,1:350,1:400,1:450,1: 500.
The present invention provides the use of a herbicidal composition comprising mesosulfuron and isoproturon for controlling undesired plant germination or growth in crops of useful plants; the useful crop is selected from wheat, barley, rye, triticale, oat, corn, rice, soybean, peanut, oilseed rape, kala, potato, sugar beet.
The present invention provides the use of a herbicidal composition comprising mesosulfuron and isoproturon for controlling the germination or growth of undesirable plants in crops of useful plants, such as plants of the genera Aleurea, Bromus, Lolium, Galium, Descurainia, Aleurites, Stellaria, Capsella, etc., wherein mesosulfuron and isoproturon are used in a synergistically effective ratio.
The present invention provides the use of a herbicidal composition comprising mesosulfuron-methyl and isoproturon for controlling the growth of a phytin (alopecurus japonica steud.), black-leaf violet (laparaopontoides Maxim.), caraway (malchimhiumaquaticum (L.) Fries), brome (broomsjaponicas thunb ex Murr.), burdoconcha (aegliobas chia coss (Gramineae)), shepherd (Capsella bursa-pastoris (lin.) medius), cleaver (Galiumaparine L. var. tenerum gren.et. (god.) rei, descurainia (L. websuba.) b. exwebantan) and synergistic plant growth, wherein the synergistic ratio is used in combination with the growth of the mesosulfuron-methyl.
A method of controlling undesired plant germination or growth in crops of useful plants, which comprises applying a herbicidal composition comprising mesosulfuron and isoproturon as described herein in the presence of the plants of the useful plants, the seeds of the useful plants or other reproductive parts of the useful plants.
The useful crops are selected from wheat, barley, rye, triticale, oat, corn, rice, soybean, peanut, oilseed rape, kala, potato, sugar beet; in particular wheat crops such as wheat, barley, rye, triticale and oat;
the undesirable plants are selected from the group consisting of malus, bromus, lolium, aegilops, cleavers, physalis, agrimonia, chickweed, capsella; in particular, the undesirable plants are selected from the group consisting of alopecurus japonicum stem, l.chaga (laparaopontoides major.), l.starwort (l.fries), brome (broomupponic bud. ex Murr.), bush (aegium japonicum Coss.), shepherd (Capsella bursa-pastoris (Linn.) Medic.), cleaver (Galiumaparine. var. tenum. et. Godr.) Rebby.), tara (Descai Ayus. Webantl.) and the like.
The present invention also provides a method of controlling undesired vegetation comprising: (i) prior to the undesired plant germination; (ii) after the undesired plant has germinated; or (iii) applying a herbicidally effective amount of a herbicidal composition comprising mesosulfuron and isoproturon to the undesired plants or to the locus thereof at times (i) and (ii).
The present invention also provides a method for controlling undesired plants, which comprises contacting the undesired plants or their growing locus with a herbicidally effective amount of said herbicidal composition containing mesosulfuron and isoproturon. A herbicidally effective amount refers to the amount of the herbicidally active ingredient applied to control undesired vegetation.
The present invention also provides a method for controlling undesired plants by applying the herbicidal composition containing mesosulfuron and isoproturon described in the present invention to soil to prevent the germination or growth of undesired plants.
A method for controlling undesired plants, wherein mesosulfuron and isoproturon in the herbicidal composition of the present invention are applied to undesired plants or their growing field together or separately to thereby control the germination or growth of the undesired plants.
A method for controlling undesired plants, wherein mesosulfuron-methyl and isoproturon in the herbicidal composition of the present invention are applied to the ground before the germination of the undesired plants, the foliage of the undesired plants after the germination, together or separately, to control the germination or growth of the undesired plants.
If the herbicidal composition according to the present invention is applied to the soil surface before germination, the weed seedlings 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 germination, 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 the competition caused by the weeds which are harmful to the crop plants is eliminated early and continuously.
Although the mesosulfuron, isoproturon already shows good or even sufficient selectivity in a large number of crops, phytotoxicity to the crop plants can in principle 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). Such as cereals (wheat, barley, rye, oats, maize, rice and millet), sugar beets, sugar cane, oilseed rape, cotton, potatoes and soybeans, preferably cereals, in particular wheat.
The weight ratio of mesosulfuron-methyl to safener in the herbicidal composition generally depends on the application rate of the herbicide and on the effect of the safener and can vary within wide limits, for example within the range, in particular, from 1:100 to 20:1, preferably from 1:50 to 10:1, more preferably from 1:20 to 1:1, more preferably from 1:10 to 1: 1. Safeners can be formulated with mesosulfuron-methyl and isoproturon as a finished formulation or supplied and used as 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. The treatment of the plants can also be carried out by applying the herbicide and safener simultaneously, for example in the form of a tank mix.
The safener of the present invention may be selected from at least one of 1, 8-naphthalic anhydride (1, 8-naphtalene dicarboxylic anhydride), benoxacor (benoxacor), fenchlorazole (fenchlorazole), fenchlorazole-ethyl (fenchlorazole-ethyl), clethoquine (cloquintocet-mexyl), Furilazole (Furilazole), benoxacor (2-dichlomethyl-2-methyl-1, 3-dioxolane), chloranil (cyclomethionil), oxanil (Oxabetrinil), fluxofenam (fluxofenam), Fenclorim (Fenclorim), fenchloraz (fluxazole), Isoxadifen (Isoxadifen), ethyl bisphenoate (Isoxadifen), propiconazole (cyclopropamide), and mefenozide.
In the methods of the present invention, the herbicidal compositions may be applied in a conventional manner using techniques well known to those skilled in the art. Methods of application include, but are not limited to, application to undesired plants or their locus of growth, such as to the area adjacent to the plants, as well as pre-emergence, post-emergence, foliar (strewn, directional, ribbon, point, mechanical, jump top or replying), and application by hand, backpack, mechanical, tractor, or aerial (airplane, helicopter, drone).
A method for controlling undesired plants, which comprises adding the herbicidal composition of the present invention to irrigation water and applying it to the undesired plants or their growing locus by using a ground or aerial duster, sprayer, or duster.
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 of mesosulfuron-methyl can vary within wide limits, for example from 1g to 100g a.i./ha (hereinafter, a.i./ha means "active substance/hectare" based on 100% pure active compound), preferably from 10 to 50g a.i./ha. When mesosulfuron is used before sowing, before planting or before and after emergence, it has a relatively broad spectrum of harmful plants to be controlled, for example annual and perennial monocotyledonous or dicotyledonous undesired plants.
The application rate of isoproturon can vary within wide limits, for example from 500g to 3000g A.I./ha, preferably 900-; it has better control effect on annual or perennial annual and perennial monocotyledonous or dicotyledonous undesirable plants.
The mesosulfuron and isoproturon of the invention can be administered directly, in the form of their formulations or in the use forms prepared therefrom. The formulations are in the form of, for example, wettable powders, emulsifiable concentrates, oil suspensions, microcapsules, microemulsions, aqueous emulsions, suspoemulsions, microcapsule suspension-suspensions, water dispersible granules, ultra-low volume liquids, tablets, ultra-low volume dispersible granules, pills or dry suspensions, granules. In each formulation form, the best possible distribution of the active compounds and auxiliaries used according to the invention is to be ensured.
The formulations of the invention can be prepared by mixing the mesosulfuron and isoproturon with fillers and/or surfactants in a known manner, it being possible for further conventional additives, such as siccatives and colorants, stabilizers, pigments, defoamers, preservatives, thickeners, etc., to be added.
According to the present invention, the term "bulking agent" refers to natural or synthetic organic or inorganic compounds that can be combined or associated with an active ingredient to make it easier to apply to a subject (e.g., a plant, crop or grass). Thus, the filler is preferably inert, at least should be agriculturally acceptable. The filler may be solid or liquid.
Suitable solid carriers are: for example, plant-based powders (for example, particles of soybean powder, starch, cereal flour, wood flour, bark powder, saw dust, walnut shell powder, bran, cellulose powder, coconut shell, corn cob and tobacco stalk, residues after extraction of plant essence, and the like), clays (for example, kaolin, bentonite, acidic china clay, and the like), talc powders, silicas (for example, diatomaceous earth, silica sand, mica, hydrous silicic acid, calcium silicate), activated carbon, natural minerals (pumice, attapulgite, zeolite, and the like), calcined diatomaceous earth, sand, plastic media (for example, polyethylene, polypropylene, polyvinylidene chloride, and the like), inorganic mineral-based powders of potassium chloride, calcium carbonate, calcium phosphate, and the like, chemical fertilizers such as ammonium sulfate, ammonium phosphate, urea, ammonium chloride, and the like, and soil fertilizers, and these substances may be used alone or in combination of 2 or more.
Suitable liquid carriers may be selected from, for example, water, alcohols (e.g., methanol, ethanol, isopropanol, butanol, ethylene glycol, etc.), ketones (e.g., acetone, methyl ethyl ketone, diisobutyl ketone, cyclohexanone, etc.), ethers (e.g., diethyl ether, dioxane, methyl cellulose, tetrahydrofuran, etc.), aliphatic hydrocarbons (e.g., kerosene, mineral oil, etc.), aromatic hydrocarbons (e.g., benzene, toluene, xylene, mineral spirits, alkylnaphthalenes, chlorinated aromatic hydrocarbons, chlorinated aliphatic hydrocarbons, chlorobenzene, etc.), esters (e.g., lactate, carbonate, fatty acid ester), amides (e.g., N-methylpyrrolidone), halogenated hydrocarbons, sulfones (e.g., dimethyl sulfoxide), mineral and vegetable oils, animal oils, etc.
Suitable surfactants are emulsifiers, dispersants or wetting agents of an ionic or nonionic nature, or mixtures of these surfactants. Suitable examples of such surfactants include fatty alcohol-polyoxyethylene ethers, polyoxyethylene alkylaryl ethers, polyoxyethylene higher fatty acid esters, phosphoric acid esters of polyoxyethylene alcohols or phenols, fatty acid esters of polyhydric alcohols, sorbitan, ethoxylated sorbitan, sucrose and glucose esters or alkylpolyglucosides, fatty acid glucamides, fatty acid alkanolamides, naphthalenesulfonic acid polymers, lignosulfonates, high-molecular comb-like dendritic copolymers, butylnaphthalenesulfonates, alkylarylsulfonates, diphenylsulfonates, sodium alkylsulfosuccinates, fats and oils, polyacrylates such as fatty alcohol-ethylene oxide condensates and alkyltaurates, and protein hydrolysates. Suitable oligosaccharides or polymers are based, for example, on ethylene monomers, acrylic acid, polyoxyethylene or polyoxypropylene alone or in combination with, for example, (poly) alcohols or (poly) amines. When one of the active compounds and/or one of the inert carriers is insoluble in water and when applied in water, a surfactant must be present.
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.
In the weeding composition containing mesosulfuron and isoproturon, the content of the mesosulfuron and the isoproturon accounts for 10% -90%, preferably 15% -80%, and more preferably 40% -80% of the weeding composition.
The herbicidal composition of the present invention may be formulated primarily, i.e., the materials in the composition have been mixed; the ingredients of the composition may also be provided in a single dose form, mixed in a tub or tank prior to use, and then diluted to the desired concentration. Wherein the formulation provided by the invention is preferably used as the main ingredient.
The herbicidal compositions according to the present invention comprising mesosulfuron and isoproturon may also comprise various active compounds of other components, for example selected from fungicides, insecticides, acaricides, nematocides, bird repellents, soil structure improvers, and plant growth regulators.
A herbicidal composition containing mesosulfuron and isoproturon exhibits unexpected and outstanding effects in controlling undesirable plants in the genera Aleurea, Bromus, Lolium, Leymus, Galium, Descurainia, Ottelia, Stellaria, and Capsella. Especially, synergistic effects are exhibited in the control of undesirable plants such as alopecurus japonicum stem, racking (lasanapogonoides major), starry chickweed (malcarphiumaquaticum (L.) Fries), brome (broomusjaponicum thunb. ex Murr.), arthrocele (aegium kiwii coss.), Capsella bursa (Linn. Medic.), cleaver (galium bursa-passeris (lin.) cleaver (Galiumaparine L. var. tenum gren. et.) Rebb. ex. pranta) at a lower rate than when each compound is applied alone.
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.
Detailed Description
The invention will be further illustrated by the following examples:
preparation example
In the formulation examples described below, the percentages are by weight, unless otherwise indicated.
EXAMPLE 10.5% Methylsulfuron +49.5% isoproturon wettable powder
Mixing the active components, various auxiliary agents, fillers and the like according to the proportion of the formula, and crushing the mixture by an ultrafine crusher to obtain 0.5 percent of methyldisulfuron and 49.5 percent of isoproturon wettable powder.
Example 20.5% Methylsulfuron +49.5% isoproturon Water dispersible granules
The active component, the dispersant, the wetting agent, the disintegrant and the filler are uniformly mixed according to the proportion of the formula, and are crushed into wettable powder by airflow, a certain amount of water is added for mixing and extrusion molding, and the water dispersible granule with 0.5 percent of mesosulfuron-methyl and 49.5 percent of isoproturon is obtained after drying and screening.
Example 30.5% Methylsulfuron +49.5% isoproturon oil suspension
Mixing the above components at a certain proportion, grinding and/or high-speed shearing to obtain 0.5% mesosulfuron-methyl and 49.5% isoproturon oil suspending agent
Example 41% Methylsulfuron +49% isoproturon Dry suspension
Mixing the active components and various assistants with water, forming a high-dispersion and stable suspension system after high-speed shearing dispersion and sanding by a sand mill to prepare the suspending agent, and drying the obtained suspension by a fluidized bed to obtain the dry suspending agent.
EXAMPLE 51% Methylsulfuron +49% isoproturon wettable powder
Mixing the active components, various auxiliaries, fillers and the like according to the proportion of the formula, and crushing the mixture by using an ultrafine crusher to obtain 1% methyldisulfuron and 49% isoproturon wettable powder.
Example 61% Methylsulfuron +49% isoproturon Water dispersible granules
The active component, the dispersant, the wetting agent, the disintegrant and the filler are uniformly mixed according to the proportion of the formula, and are crushed into wettable powder by airflow, a certain amount of water is added for mixing and extrusion molding, and the 1 percent mesosulfuron-methyl and 49 percent isoproturon water dispersible granule is obtained after drying and screening.
Example 71% Methylsulfuron +49% isoproturon oil suspension
The components are mixed according to a certain proportion and ground and/or sheared at a high speed to obtain the oil suspending agent of 1 percent of mesosulfuron-methyl and 49 percent of isoproturon
Example 81% Mesosulfuron +49% isoproturon Dry suspension
Mixing the active components and various assistants with water, forming a high-dispersion and stable suspension system after high-speed shearing dispersion and sanding by a sand mill to prepare the suspending agent, and drying the obtained suspension by a fluidized bed to obtain the dry suspending agent.
Example 91.2% Mesosulfuron +68.8% isoproturon Water dispersible granules
The active component, the dispersant, the wetting agent, the disintegrant and the filler are uniformly mixed according to the proportion of the formula, and are crushed into wettable powder by airflow, a certain amount of water is added for mixing and extrusion molding, and the 1.2 percent mesosulfuron-methyl and 68.8 percent isoproturon water dispersible granule are obtained after drying and screening.
Example 101% Mesosulfuron +60% isoproturon Water dispersible granules
The active component, the dispersant, the wetting agent, the disintegrant and the filler are uniformly mixed according to the proportion of the formula, and are crushed into wettable powder by airflow, a certain amount of water is added for mixing and extrusion molding, and the 1 percent of mesosulfuron-methyl and 60 percent of isoproturon water dispersible granule are obtained after drying and screening.
Example 112% Methylsulfuron +68% isoproturon Water dispersible granules
The active component, the dispersant, the wetting agent, the disintegrant and the filler are uniformly mixed according to the proportion of the formula, and are crushed into wettable powder by airflow, a certain amount of water is added for mixing and extrusion molding, and the 2 percent mesosulfuron-methyl and 68 percent isoproturon water dispersible granule is obtained after drying and screening.
Example 122.2% Methylsulfuron +74.8% isoproturon Water dispersible granules
The active component, the dispersant, the wetting agent, the disintegrant and the filler are uniformly mixed according to the proportion of the formula, and are crushed into wettable powder by airflow, a certain amount of water is added for mixing and extrusion molding, and the 2.2 percent mesosulfuron-methyl and 74.8 percent isoproturon water dispersible granule is obtained after drying and screening.
EXAMPLE 133% Mesosulfuron +57% isoproturon wettable powder
The active component, the dispersant, the wetting agent, the disintegrant and the filler are uniformly mixed according to the proportion of the formula and are crushed into wettable powder by airflow.
EXAMPLE 141.5% Methylsulfuron +48.5% isoproturon wettable powder
The active component, the dispersant, the wetting agent, the disintegrant and the filler are uniformly mixed according to the proportion of the formula and are crushed into wettable powder by airflow.
Example 150.2% Methylsulfuron +10% isoproturon oil suspension
Mixing the components in proportion, grinding and/or shearing at high speed to obtain 0.2% mesosulfuron-methyl and 10% isoproturon oil suspending agent
Example 163% Methylsulfuron +47% isoproturon wettable powder
The active component, the dispersant, the wetting agent, the disintegrant and the filler are uniformly mixed according to the proportion of the formula and are crushed into wettable powder by airflow.
Example 170.5% Methylsulfuron +49.5% isoproturon wettable powder
Mixing the active components, various auxiliary agents, fillers and the like according to the proportion of the formula, and crushing the mixture by an ultrafine crusher to obtain 0.5 percent of methyldisulfuron and 49.5 percent of isoproturon wettable powder.
Example 180.5% Mesosulfuron +49.5% isoproturon Water dispersible granules
The active component, the dispersant, the wetting agent, the disintegrant and the filler are uniformly mixed according to the proportion of the formula, and are crushed into wettable powder by airflow, a certain amount of water is added for mixing and extrusion molding, and the water dispersible granule with 0.5 percent of mesosulfuron-methyl and 49.5 percent of isoproturon is obtained after drying and screening.
Biological examples
Adopts a stem and leaf spraying method.
Mesosulfuron (93% TG), isoproturon (90% TG) were dissolved in acetone and diluted with 0.1% aqueous Tween 80. Preparing single-dose mother liquor respectively, and mixing the weeding combinations with different concentration ratios according to a test design scheme.
Seeds of weeds in wheat fields are sown in plastic pots. The test plant seeds were sown in soil separately for each variety. The containers were irrigated gently to promote plant germination and growth. When the plants have grown to the 3-5 leaf stage, the active compounds suspended or emulsified in water are applied by means of fine-distribution nozzles. And a treatment without drug was set as a blank control.
The number of weed plants was investigated 40 days after the test treatment, and the weed control effect was calculated.
Weed control effect (%) = (number of weeds in control blank zone-number of weeds in treated zone)/number of weeds in control blank zone 100
The calculated control effect of the weeding composition is a theoretical expected value and is calculated by a Colby formula: see (marketing synergy and antibiotic Responses of pharmaceutical compositions), Weeds,15(1967), pages 20-22:
x is the weed control effect of active compound A when used in mg/ha or mppm concentration;
y is the weed control effect of the active compound B when used in an amount of ng/ha or at a concentration of nppm;
E0is the expected weed control when using the compositions of compounds A and B at the dosages of m and n g/ha or at the concentrations of m ppm and n ppm, as theoretically expected.
If the actual weed control tested is greater than the expected weed control, then the combination of compounds a and B has a synergistic effect; if the actual weed control tested is less than the expected weed control, then the combination of compounds a and B has an antagonistic effect; the combination of compounds a and B has an additive effect if the actually tested weed control is equal to the expected weed control.
The plant varieties tested were as follows:
common racking (laparaapodonoides Maxim.);
brome (bromusjaponicum thunb. ex Murr.);
arthroncus arvensis (Gramineae);
shepherd's purse (Capsella burst-pastoris (Linn.) Medic);
cleavers (Galiumpanine L. var. tenerum Gren. et (Godr.) Rebb.);
descurainia sophia (L.) Webb. exPrantl.)
TABLE 1 control of plants (Lapsapogonoides Maxim.)
Table 2 control of brome (bromusjaponicum thunb. ex Murr.)
TABLE 3 control of Arthropoda wheat (Aegliopstauschii Coss. (Graminae)
Table 4 control efficacy against descurainia sophia (L.) webb
TABLE 5 Effect against Galium aparine L. var. tenerum Gren. et (Godr.) Rebb.)
TABLE 6 control of Capsella bursa-pastoris (Linn.) Medic
The test results of tables 1-6 show that: mesosulfuron-methyl and isoproturon in the range of 1:25 to 1:400, on
Common racking (laparaapodonoides Maxim.); brome (bromusjaponicum thunb. ex Murr.); the prevention effect of the compound preparation on the plant diseases of the Chinese medicinal herbs of the Japanese rye (AeglistauschiCoss. (Graminae), shepherd's purse (Capsella burst-pastoris (Linn.) Medic.), cleavers (Galiuaparine L. var. tener Gren. et. and Descurainia sophia (L.) Webb. exPrantl.) shows obvious synergistic effect;
however, the combination of mesosulfuron-methyl and isoproturon does not show synergistic effect in the control of nostoc commune, carex, atriplex hortensis and euphorbia helioscopia.
Claims (14)
1. A weeding composition containing mesosulfuron and isoproturon, which is characterized in that the weight ratio of the mesosulfuron to the isoproturon is 1:25-1:500, preferably 1:50-1:400, further preferably 1:50-1:200, more preferably 1:100-1:200, and further preferably 1:99 or 1: 100.
2. The weeding composition according to claim 1, wherein the dosage form of the weeding composition is wettable powder, water dispersible granules, oil suspending agents, granules and suspending agents.
3. A herbicidal composition according to claim 1, characterized in that it further comprises a filler and/or a surfactant.
4. The herbicidal composition according to claim 1, characterized in that it further comprises at least one safener selected from the group consisting of benoxacor (benoxacor), fenchlorazole (fenchlorazole), fenchlorazole-ethyl (fenchlorazole-ethyl), clethoquine (cloquintocet-mexyl), furazol (Furilazole), benoxacor (2-dichlomethyl-2-methyl-1, 3-dioxanone), chloranil (cyclotrinil), Oxabetrinil (Oxabetrinil), fluxofenam (fluxofenam), Fenclorim (Fenclorim), benoxazamide (flurazozole), benayne (Acetamide), Isoxadifen (Isoxadifen), ethyl Isoxadifen (Isoxadifen), cyprosulfamide (cyclopropamide), and mefenpyrazole (Mefenpyr-ethyl).
5. Use of the herbicidal composition according to claim 1 for controlling undesired vegetation in crops of useful plants, characterized in that the undesired vegetation is selected from the group consisting of rhodomyrtus, brome, lolium, aegilops, cleavers, descurainia, thraustochytrium, chickweed, capsella.
6. Use according to claim 5, characterized in that the undesirable plants are selected from the group consisting of Alopecurus amurensis (Alopecurusjaponicus Steud.), L.praecodonoides (Lapsammonioides Maxim.), Stellaria gigantea (L.) Fries, Bromus japonicas (ex Murr.), Arthropoda japonica (Aeglistaurosis Coss. Grangeae), Capsella bursa-pastoris (Linn.) Medic, Galium aparine (Galiumpanine L. var. tenum Gren. et. G.Rab.), and L.Descurainia Sojae (L. Webp. exPratenal.).
7. Use according to claim 5, the useful crop being selected from wheat, barley, rye, triticale, oats, maize, rice, soybeans, peanuts, oilseed rape, carrots, potatoes, sugar beet.
8. A method of controlling undesired vegetation in crops of useful plants, comprising: (i) prior to the undesired plant germination; (ii) after the undesired plant has germinated; or (iii) applying a herbicidally effective amount of a herbicidal composition comprising mesosulfuron-methyl and isoproturon at times (i) and (ii) to the undesired plants or to the locus thereof, the weight ratio of mesosulfuron-methyl and isoproturon being from 1:25 to 1: 500.
9. The method according to claim 8, wherein the undesirable plants are Alopecurus amurensis (Alopecurus japonicus Steud.), L.pratense (Lapsapogonoides Maxim.), Stellaria bovis (Malachiumaquaticum (L.), Fries), Bromus japonicas (ex Murr.), Arthropoda (Aeglistauroschis Coss, Graminae), Capsella bursa-pastoris (Linn.) Medic, Galium aparine (Galiumapaine L. var. tenum Gren. et. Godr.), and Descurus curainiae (Descuria Socia Webphb. exPrain.).
10. The method of claim 8, comprising contacting the undesirable vegetation or locus thereof with a herbicidally effective amount of a herbicidal composition comprising mesosulfuron and isoproturon.
11. The method as claimed in claim 8, which comprises applying said herbicidal composition comprising mesosulfuron and isoproturon to the soil to control the germination or growth of undesirable plants.
12. The method as claimed in claim 8, which comprises applying the mesosulfuron and isoproturon in the herbicidal composition to the undesired plants or their growing field together or separately so as to control the germination or growth of the undesired plants.
13. The method as claimed in claim 8, which comprises applying the mesosulfuron and isoproturon together or separately in the herbicidal composition to the ground before the emergence of the undesirable vegetation, to the foliage of the undesirable vegetation after the emergence to control the emergence or growth of the undesirable vegetation.
14. The method according to claim 8, comprising applying the herbicidal composition comprising mesosulfuron and isoproturon in the presence of plants of a crop of useful plants, seeds of a crop of useful plants, or other reproductive part of a crop of useful plants, the crop of useful plants being wheat, barley, rye, triticale, oats, corn, rice, soybean, peanuts, oilseed rape, carrageen, potatoes, sugar beet.
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| CN1239867A (en) * | 1996-12-07 | 1999-12-29 | 赫彻斯特-舍林农业发展有限公司 | Herbicides containing N-[(4,6-dimethoxypyrimidine-2-yl) aminocarbonyl]-5-methylsulphonamidomethyl-2-alkoxycarbonylbenzene sulphonamides |
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| CN1239867A (en) * | 1996-12-07 | 1999-12-29 | 赫彻斯特-舍林农业发展有限公司 | Herbicides containing N-[(4,6-dimethoxypyrimidine-2-yl) aminocarbonyl]-5-methylsulphonamidomethyl-2-alkoxycarbonylbenzene sulphonamides |
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| CN104585214A (en) * | 2015-01-16 | 2015-05-06 | 陕西上格之路生物科学有限公司 | Wheat field weeding composition containing mesosulfuron-methyl |
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