CN106818818A - Weeding composition - Google Patents

Abstract

The present invention provides a herbicide composition, the active ingredients of which are composed of component A and component B, wherein component A is chlorpyrifos methyl and component B is another herbicide; the weight ratio of the two is 1:1 to 1:100. The present invention also relates to the use of the herbicide composition for controlling the growth of unwanted broadleaf weeds, sedge weeds, or grass weeds, particularly for controlling the growth of unwanted plants in cereal crops such as barnyard grass, Chinese sedge, yellow nut sedge, dimorphic sedge, nightshade, chrysanthemum, amaranth, firefly rush, and Alisma plant. The present invention also provides a method for controlling the growth of unwanted plants, comprising contacting the unwanted plants or their growth sites with a herbicidally effective amount of the herbicidal composition of the present invention, or applying a herbicidally effective amount of the herbicidal composition of the present invention to soil or water to prevent the germination or growth of the unwanted plants.

Description

a herbicidal composition

technical field

The present invention belongs to the field of pesticides, and in particular relates to a herbicidal composition and a method for controlling unwanted plant growth.

Background technique

The world's food production suffers huge losses due to diseases, insects, and weeds every year, and crops are almost always attacked by various weeds throughout the growing season, and the damage of weeds is also a key factor restricting crop yields. Therefore, the control of agricultural weeds has always been the most concerned and important issue in agricultural production.

Protecting crops from weeds and other vegetation that inhibit crop growth is an ongoing problem in agriculture. To address this problem, many chemicals and chemical formulations to control weed growth have been used commercially.

Rice is one of the main food crops in the world. Nearly half of the world's population, including almost the entire population of East Asia and Southeast Asia, eat rice. It is produced on all continents except Antarctica. Rice is also the most important food crop in my country. The sown area of rice in my country accounts for 1/4 of the national grain crops, while the output accounts for more than half. Regardless of the planting area and output, it ranks first in my country's food crops.

The control of agricultural weeds has always been the most concerned and important issue in agricultural production. Crops are infested by a variety of weeds for almost the entire growing season. A large number of weeds have always occurred in all rice-growing areas in my country. There are many types of weeds in rice fields, and the types of weeds are different in different regions due to factors such as climate and soil. The area and severity of the damage are followed by , stalk grass, stalk grass, daughter of a thousand gold seeds, eye spinach, and yujiuhua.

Clopyrazosulfuron-methyl (Halosulfuron-methyl, CAS NO.100784-20-1) is a sulfonylurea herbicide. The pure product is a white powdery solid with a melting point of 175.5-177.2°C. It is hardly soluble in water and can be dissolved in most solvents such as The solubility in n-hexane, acetone, dichloromethane, toluene, ethyl acetate and other solvents is also small. Clopyrazosulfuron-methyl is 3-chloro-5-[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]]amino]sulfonyl]-1-methyl-1H-pyrazole - Generic name for methyl 4-carboxylate. Clopyrazosulfuron-methyl is a selective systemic conduction herbicide for sulfonylurea rice fields. Clopyrazosulfuron-methyl is mainly absorbed through the root system, and can also be absorbed through the stems and leaves. It quickly transfers in the weed plant, inhibits the growth of the weed, and the weed gradually dies. The herbicidal activity of clorazosulfuron-methyl is described in The Pesticide Manual, Fourteenth Editioni, 2006. Clopyrazosulfuron controls many broadleaf and nut sedges in rice, corn, sorghum, sugar cane, nuts and turf.

The use of chemical herbicides is one of the important symbols of modern agriculture. In recent years, the sales of herbicides have increased year by year, and the application area has also expanded year by year. However, with the continued use of many herbicide varieties on a large scale, many problems have arisen, such as the problem of weed resistance, especially the problem of resistance to older weeds is particularly prominent; Short validity and so on. Therefore, there is an urgent need for long-acting herbicides with a wide range of weed control, strong selectivity and less pressure on weed resistance, and combinations thereof.

However, with the continued use of many herbicide varieties in large areas of rice fields, many problems have also arisen: (1) Weed resistance is outstanding, among which the resistance of barnyardgrass to propanil and butachlor and other herbicides is more prominent , and the resistance of Cyperaceae weeds to sulfonylurea herbicides has gradually emerged; (2) The damage of older weeds and perennial weeds has become an important problem, especially older barnyard grass and Cyperaceae perennial weeds. (3) Herbicide varieties have single effect and short duration.

In some cases it has been shown that herbicidally active ingredients are more effective in combination than when applied individually, this is referred to as "synergy". Synergy is the interaction of two or more factors such that when combined the effect is greater than would be expected based on the response of each factor administered separately.

CN103392724A discloses the use of a cassava field herbicide composition for controlling Cyperus rotifera. The herbicide composition is a ternary composition consisting of chlorpyrazosulfuron-methyl, oxyfluorfen and amide herbicides as active ingredients. The herbicide composition, the amide herbicide is one of butachlor, metolachlor, and metolachlor-sperm.

CN104397003A discloses a herbicidal composition and a preparation thereof. The herbicidal composition consists of chlorpyrazosulfuron, nicosulfuron and butachlor. The herbicidal composition provided by the invention has obvious synergistic effect compared with a single dose; the herbicidal effect of the herbicide provided by the invention is obviously higher than any single dose of any one of the three components.

Li Hong et al. studied the effect of butachlor and pyrazosulfuron-methyl on weed control in transplanted rice fields, and the results showed that 28% butachlor-pyrazosulfuron-methyl WP 226.8～525.0g(ai)/hm ² was effective for rice transplanted fields. barnyardgrass, bermudagrass, knotgrass, and heterocyperus all have good control effects (see Li Hong et al., "28% butachlor-pyrazosulfuron-methyl WP control effect on weeds in transplanted rice fields", Hubei Agricultural Science, Issue 4 of 2012).

CN104430445A discloses a paddy field herbicide, which comprises three active components of pretilachlor, chlorpyrazosulfuron-methyl, and oxadiazone, wherein the weight ratio of pretilachlor, chlorpyrazosulfuron-methyl, and oxadiazone is 6-7 : 0.5-0.5: 1.1-1.3; CN103960266A discloses a kind of pesticide composition containing chlorotoluron, pretilachlor and chlorpyrazosulfuron and application thereof, and the active ingredients of the pesticide composition are chlorotoluron, triclosulfuron amine and clopyrazosulfuron, the mass ratio of chlorotoluron, pretilachlor and clopyrazosulfuron is 15-120:10-50:0.5-10.

Therefore, how to effectively combine the existing herbicides so that the resulting herbicidal composition exerts a synergistic effect has become the focus of current research.

Contents of the invention

In order to solve the deficiencies in the prior art, the purpose of the present invention is to provide a herbicidal composition to enable those skilled in the art to control a variety of weeds or a certain difficult-to-control weed after crops are applied once or several times. weed species. The combination of components A and B according to the invention achieves in a particularly advantageous manner the level of weed control desired by the skilled person, even for certain weed species which are difficult to control. Furthermore, the application of the composition according to the invention can significantly reduce the application rate of the individual components of the combination without producing unacceptable toxicity to crop plants.

The present invention is based on the discovery that components A and B, each known to have herbicidal efficacy, show a synergistic effect when applied in combination: firstly, the application rate of the individual compounds is reduced while maintaining a good level of action; secondly, according to the invention The compositions also achieve high levels of weed control when the individual substances in the range of low application rates have become useless from an agronomic point of view. The compositions according to the invention not only broaden the weed spectrum, but additionally increase the selectivity with respect to the crop of useful plants. The compositions according to the invention, while maintaining a very good control of weeds in crops of useful plants, also allow greater flexibility in subsequent crops.

For reaching this purpose, the present invention adopts following technical scheme:

The invention provides a herbicidal composition, the active component of which is composed of components A and B; the weight ratio of the components A and B is 1:1-1:100, preferably 1:1-1: 50, more preferably 1:1-1:40, more preferably 1:5-1:30, more preferably 1:5-1:25, more preferably 1:5-1:20, more preferably 1 :1-1:15, more preferably 1:1-1:10.

Wherein, A is chlorpyrazosulfuron-methyl, and B is at least one of the following compounds: naproamide, pretilachlor, napropamide, bibenzamide, butachlor, acetochlor, dimethicone Ammonium, dimethachlor, alachlor, metolachlor, high-efficiency metolachlor, metolachlor, methoxam, mefenoxam, dimethenamid, toxachlor, tetramazole , Dimethenamid, Toxachlor, Dibenzamide, Flufenacet, Saprophos, Dimethenafos, and Mefenacet.

Particularly effective combinations of components A and B are: chlorpyrazosulfuron-methyl + naproxamine, chlorpyrazosulfuron-methyl + pretilachlor, chlorpyrazosulfuron-methyl + napropachlor, clopyrazosulfuron-methyl + dibenzoyl Grass amine, clopyrazosulfuron-methyl + butachlor, clopyrazosulfuron-methyl + acetochlor, clopyrazosulfuron-methyl + dimethachlor, chlorpyrazosulfuron-methyl + metolachlor, clopyrazosulfuron-methyl + acetochlor Chloron + alachlor, chlorpyrazosulfuron + metolachlor, chlorpyrazosulfuron + high-efficiency metolachlor, chlorpyrazosulfuron + promethachlor, chlorpyrazosulfuron + methazolam Amine, clopyrazosulfuron-methyl + mezafenamide, clopyrazosulfuron-methyl + dimethenamid, clopyrazosulfuron-methyl + toxachlor, clopyrazosulfuron-methyl + mezafenamide, clopyrazosulfuron-methyl + Dimethenamid, Clopyrazosulfuron-methyl+Toxachlor, Clopyrazosulfuron-methyl+Bibenzamide, Clopyrazosulfuron-methyl+Flufenacet, Clopyrazosulfuron-methyl+Sapnilphos, Clopyrazosulfuron-methyl Methazone+pyrazafos or chlorpyrazosulfuron+metsutralam.

Very particularly effective combinations of components A and B are: chlorpyrazosulfuron-methyl + pretilachlor, clopyrazosulfuron-methyl + butachlor, clopyrazosulfuron-methyl + flufenacet, clopyrazosulfuron-methyl + Napropamide, chlorpyrazosulfuron-methyl + acetochlor, chlorpyrazosulfuron-methyl + alachlor, chlorpyrazosulfuron-methyl + metolachlor, chlorpyrazosulfuron-methyl + high-efficiency metolachlor, chlorine Pyrazosulfuron-methyl + propachlor, chlorpyrazosulfuron-methyl + memefenox or chlorpyrazosulfuron-methyl + saprofen.

More particularly effective combinations of components A and B are: clopyrazosulfuron-methyl + pretilachlor, clopyrazosulfuron-methyl + butachlor, clopyrazosulfuron-methyl + high-potency metolachlor or clopyrazosulfuron-methyl Long + flufenacet.

The invention provides a herbicidal composition, the active component is composed of components A and B, and also includes filler and/or surface active agent.

In the herbicidal composition, the total amount of the components A and B accounts for 5%-90% by weight of the herbicidal composition.

In the herbicidal composition, the total amount of the components A and B accounts for 10%-80% by weight of the herbicidal composition.

In the herbicidal composition, the total amount of the components A and B accounts for 10%-70% by weight of the herbicidal composition.

The dosage form of the herbicidal composition is wettable powder, emulsifiable concentrate, suspension concentrate, microcapsule, microemulsion, water emulsion, suspoemulsion, water dispersible granule, water formulation, microcapsule suspension-suspension concentrate, ultra-low volume liquid , tablets, microcapsules or granules.

The herbicidal composition can also include a safener, the safener is at least one of clofenac-methyl, clofenac, fenpyrid, acrylamid, mefenpyr-ethyl or isoxadifen , the weight ratio of the safener relative to the total amount of active components is 1:100-20:1.

Use of a herbicidal composition for controlling unwanted vegetation.

Use of a herbicidal composition for controlling undesired plant growth in Gramineae, Broadleaf weeds, Cyperaceae weeds.

Use of a herbicidal composition for controlling undesired vegetative growth in useful crops. The herbicidal composition can be used for controlling wheat, corn, soybean, sugar beet, sugar cane, cotton, rice, beans, flax, barley, oats, rye, triticale, rape, potato, millet, pasture, green land or lawn Use for unwanted vegetative growth of broadleaf weeds, sedges, gramineous weeds in fruit tree plantations or in non-crop areas. In particular it is useful for controlling undesired vegetative growth in broadleaf weeds, sedge weeds in rice crops.

Use of a herbicidal composition for controlling undesired vegetation in useful crops, said herbicidal composition being tolerated by said useful crops.

A method of controlling unwanted vegetation comprising: (i) before germination of unwanted vegetation (pre-emergence); (ii) after germination of unwanted vegetation (post-emergence); or (iii) after (i) ) and (ii), a herbicidally effective amount of the herbicidal composition of the present invention is applied to the undesired plants or their growth sites.

A method of controlling undesired vegetation by applying the active components A and B of the herbicidal composition according to the invention jointly or separately to the undesired vegetation or its locus.

A method of controlling undesired vegetation, comprising applying the herbicidal composition of the present invention in the presence of plants of useful crops, seeds of useful crops or other reproductive parts of useful crops; preferably the herbicidal composition of the present invention in useful Applied directly to the plant or the locus of the plant before or after sowing or germination of the crop.

A method of controlling undesired plant growth, comprising contacting undesired plants or their growth sites with a herbicidally effective amount of the herbicidal composition of the present invention or applying a herbicidally effective amount of the present herbicidal composition to soil or water to Prevents germination or growth of unwanted vegetation.

Compared with the prior art, the present invention has at least the following beneficial effects:

(1) In the present invention, by compounding components A and B, the activity of the herbicidal composition exceeds the sum of the activities when the two active compounds are applied separately; in addition, by adjusting the weight of the two active compounds The percentage content and its ratio greatly improve the control effect on unwanted plants, and the herbicidal activity can reach more than 95%;

(2) The present invention combines components A and B to obtain in a particularly advantageous manner the level of weed control desired by the skilled person, even including certain weed species that are difficult to control. Moreover, the application of the composition of the present invention can significantly reduce the application amount of individual components in the combination, without causing unacceptable toxicity to crops, and improving its compatibility with crops.

detailed description

Protecting crops from weeds and other vegetation that keep them growing is an ongoing problem in agriculture. To help combat this problem, researchers in the field of synthetic chemistry have prepared a variety of chemicals and chemical formulations that are effective in controlling this unwanted growth. Many types of chemical herbicides have been disclosed in the literature, and a large number of chemical herbicides have been used commercially.

Combining the active ingredients of different pesticides into a mixture is an effective way to develop and develop new pesticides and control resistant weeds in agriculture. Combinations of pesticide active ingredients of different varieties usually show three types of effects: additive effect, synergistic effect and antagonistic effect. However, it is impossible to predict the specific effect. Surprisingly, the combination of active ingredients exceeds the additive effect expected in principle on the weeds to be controlled and thus extends the range of action of the two active ingredients in particular in two respects (i.e. exhibits a synergistic activity): firstly, the application rate of the individual compounds is reduced while maintaining a good level of action; secondly, the combination achieves a high level when the individual substances in the range of low application rates have become useless from an agronomic point of view In addition, the composition controls species that have not been controlled, controls species that are tolerant or resistant to a single herbicide or multiple herbicides, prolongs the application period and/or reduces the number of separate applications required; and For the user, an economically and ecologically more advantageous weed control system is obtained.

The combined administration of components A and B produces a superadditive (=synergistic) effect. The synergistic effect should reduce the application rate of the active substances, increase the efficacy at the same application rate, control hitherto uncontrollable species, prolong the application period, and reduce the number of separate applications required. It is therefore an economically and ecologically more beneficial weed resistance system for the user. This activity can especially reduce the application rate, control a wider spectrum of broadleaf, grass, sedge weeds, make up for the activity gap of resistant weed populations, more rapid and reliable activity, longer lasting Effective period, only one or a few applications can completely control harmful plants and prolong the pot life of the active ingredients in the combination.

The above characteristics are desired in field weed control to free crops from competition from undesired plants, and/or to increase yield. The combination of components A and B according to the invention significantly exceeds the prior art with regard to the above-mentioned properties.

The invention provides a herbicidal composition, the active component of which is composed of components A and B; the weight ratio of the components A and B is 1:1-1:100, preferably 1:1-1: 50, more preferably 1:1-1:40, more preferably 1:5-1:30, more preferably 1:5-1:25, more preferably 1:5-1:20, more preferably 1 :1-1:15, more preferably 1:1-1:10.

For example, the weight ratio of components A and B in the present invention can also be 1:1, 1:5, 1:10, 1:15, 1:20, 1:25, 1:30, 1:35, 1 :40, 1:45, 1:50, 1:55, 1:60, 1:65, 1:70, 1:75, 1:80, 1:85, 1:90, 1:95, 1:100 .

It has been unexpectedly found that the combination of Components A and B at or below this application rate exhibits a synergistic effect on weed control, especially on barnyardgrass (Echinolchloacrus- galli; ECHCG), Chinese daughter genus (Leptochloa chinensis; LEFCH), yellow nutsedge (Cyperus esculentus; CYPES), heteromorphous sedge (Cyperus difformis L), black nightshade (Solanum nigrum L.), chrysanthemum (Abutilon theophrasti Medic), Acalypha australis L, Scirpus juncoides Roxb, and Alisma plantago-aquatica Linn. controls showed a clear synergistic effect.

The application rates of component A can be varied within wide ranges, for example between 0.1 g and 200 g A.I./ha (hereinafter, A.I./ha stands for "active substance/ha"=based on 100% pure active compound). When applied at an application rate of 0.1 g to 100 g A.I./ha, it has a relatively wide spectrum of harmful plants to be controlled when it is used before sowing, before planting or in pre-emergence and post-emergence, such as Clorazosulfuron-methyl is used to control many broadleaf and nut sedges in rice, corn, sorghum, sugar cane, nuts and turf.

The application rates of component B can be varied within wide ranges, for example 1 g to 2000 g A.I./ha, which has a relatively broad spectrum of harmful plants to be controlled.

Suitable ratio ranges for components A and B can be determined, for example, by reference to the application rates of the individual compounds mentioned. In the herbicidal compositions according to the invention, the application rates can generally be reduced. In the herbicidal composition of the present invention, the weight ratio of A and B is 1:1-1:100.

Preferably, the weight ratio of components A and B is 1:1-1:50.

In particular, the weight ratio of components A and B is 1:1-1:40;

More specifically, the weight ratio of components A and B is 1:5-1:30.

More specifically, the weight ratio of components A and B is 1:5-1:25.

More particularly, the weight ratio of components A and B is 1:5-1:20.

More particularly, the weight ratio of components A and B is 1:5-1:15.

More particularly, the weight ratio of components A and B is 1:5-1:10.

The herbicidal compositions according to the invention may also comprise one or more other active compounds which differ from the A and B components and which also act as selective herbicides.

The herbicidal composition of the present invention may also contain various active compounds of other components, for example selected from safeners, fungicides, insecticides, acaricides, nematicides, bird repellents, soil structure improvers, plant Nutrients (fertilizers), and herbicides structurally different from A and B, and plant growth regulators.

Preferably, the different types of agrochemically active compounds include acibenzolar, acibenzolar S methyl, acifluorfen, aclonifen, diacrylamide (allidochlor), alloxydim, ametryn, amicarbazone, amidosulfuron, aminopyralid, amitrole, amino Ammonium sulfamate, ancymidol, anilofos, asulam, atrazine, azafenidin, azimsulfuron ), benfuresate, bensulfuron, benzfendizone, benzobicyclon, benzofenap, benzofluor, flupirox Bicyclopyrone, bispyribac sodium, bromoxynil, butafenacil, butralin, carbetamide, carfentrazone ), chlorimuron (chlorimuron ethyl), chlormequat chloride, chlorotoluron, chlorsulfuron, cinmethylin, cinosulfuron, clethodim, clomazone, clomeprop, clopyralid, cyanazine, cyclanilide, cyprosulfone Cyclosulfamuron, cyclooxydim, cyprazole, daimuron/dymron, dicamba, diclofop methyl, diclofop P methyl), diclosulam (diclosulam), acethachlor (diethatyl, diethatyl ethyl), pyridine Diflufenican, diflufenzopyr, diflufenzopyr sodium, dimefuron, dimepiperate, dimethamethryn, diphenamid, Dipropetryn, diquat, diuron, ethametsulfuron, ethametsulfuron methyl, ethephon, ethidimuron, ethisulfuron (ethoxysulfuron), etobenzanid, fenoxaprop, fenoxaprop P, fenoxaprop ethyl, fentrazamide ), flazasulfuron, florasulam, fluazifop, fluazifop P, fluazifop butyl , fluazifop P butyl, fluazolate, flucarbazone, flucarbazone sodium, flucetosulfuron, flufenacet , flumetralin, flumetsulam, flumioxazin, flumipropyn, fluometuron, fluorodifen, acetylene Fluoroglycofen, fluoroglycofen ethyl, flupoxam, flupyrsulfuron, fluridone, flurochloridone, fluroxyfen ( fluroxypyr), flurtamone, fluthiamide, fomesafen, glufosinate, glufosinate ammonium, glufosinate P glufosinate P ammonium, glufosinate P ammonium P sodium salt (glufosinate Psodium ), glyphosate, glyphosate isopropylammonium, halosafen, haloxyfop, haloxyfop P, flurpiridine Haloxyfop ethoxyethyl, haloxyfop P ethoxyethyl, haloxyfop methyl, haloxyfop P methyl, hexazinone, imazamic acid (imazamethabenz, imazamethabenz methyl), imazamox, imazamoxammonium, imazapic, imazapyr, imazapyr isopropylammonium, imazaquin, imazaquin ammonium, imazethapyr , imazethapyrammonium), imazosulfuron, inabenfide, indanofan, iodosulfuron, iodosulfuron methyl sodium, ioxynil, isoproturon ( isoproturon), isoxaben, isoxachlortole, isoxaflutole, isoxapyrifop, lactofen, cyclopyr (lenacil), mefluidide, mepiquat chloride, mesosulfuron, mesosulfuron methyl, mesotrione, methabenzthiazuron, Metamitron, metazachlor, methazole, methiopyrsulfuron, methoxyphenone, methyldymron, isopropyl Alachlor (metolachlor), refined metolachlor (S metolachlor), sulfentrazone (metosulam), metoxuron (metoxuron), metrib uzin), metsulfuron, metsulfuron methyl, molinate, monosulfuron, monosulfuron ester, monuron, napropamide ), nicosulfuron, oxadiargyl, oxasulfuron, oxaziclomefone, oxyfluorfen, paclobutrazol, Paraquat, paraquat dichloride, pentoxazone, pethoxamid, picloram, picolinafen, pinoxaden, Piperophos, probenazole, profluazol, prifluraline, profoxydim, prometryn, propanil ), propazine, propham, propyrisulfuron, propyzamide, prosulfocarb, prosulfuron, propargyl (pynachlor), pyraclonil, pyraflufen, pyraflufen ethyl, pyrazosulfuron, pyrazosulfuron ethyl), pyribambenz isopropyl, pyribambenz propyl), pyribenzoxim, pyributicarb, pyriftalid, pyriminobac, pyriminobac methyl, pyrimisulfan, pyrithiobac, pyrithiobacsodium), pyroxasulfone, pyroxsulam, quinchlorac, quinmerac, quizalofop, quizalofop P, Quizalofop P ethyl, rimsulfuron, saflufenacil, secbumeton, sethoxydim, siduron, Sulcotrione, sulfometuron (sulfometuron methyl), thidiazuron, thifensulfuron (thifensulfuron methyl), thiobencarb, tiocarbazil, ether Triasulfuron, triaziflam, tribenuron, tribenuron methyl, trichloroacetic acid (TCA), triclopyr, tridiphane, three Trifluxysulfuron (trifloxysulfuron, trifluxysulfuron sodium), trifluralin, triflusulfuron, triflusulfuron methyl, trimethuron, trinexapac, trinexapac ethyl), trifluoromethylsulfuron (tritosulfuron), tsitodef, uniconazole (uniconazole).

When the herbicidal composition of the present invention is used in combination with substances such as glyphosate, glufosinate-ammonium, dicamba, imidazolinone, sulfonylurea, and 2,4-D, the applied crops are glyphosate, glufosinate-ammonium, wheatgrass fear, imidazolinone, sulfonylurea or 2,4-D tolerant crops.

Although said A and B have shown good or even sufficient selectivity in a large number of crops, in principle, in some crops, especially when also mixed with other less selective herbicides, there may occur damage to crop plants. Phytotoxicity. Compositions comprising the herbicidal compositions according to the invention together with one or more safeners are therefore particularly advantageous. The safeners are used in antidotally effective amounts, for example in economically important crops or in fruit tree plantations (plantation crops) to reduce the phytotoxic side effects of the herbicides used. Such economically important crops are for example cereals (wheat, barley, rye, oats, maize, rice and millet), sugar beet, sugar cane, rapeseed, cotton and soybean, preferably cereals, especially rice.

The following compounds are for example suitable as safeners (including possible stereoisomers and agriculturally customary esters or salts): benoxacor, benthiocarb, cloquintocet(-mexyl) , brassinolide, cyometrinil, cyprosulfamide, dimepiperate, dichlormid, dicyclonon, o-phenylthiophosphoric acid o, o-di Dietholate, fenchlorazole(-ethyl), fenclorim, flurazole, fluxofenim, furilazole, diphorate (disulfoton), isoxadifen(-ethyl), mefenpyr(-diethyl), 4-chlorophenyl methylcarbamate (mephenate), naphthalic anhydride, and mefenpyr Nitrile (oxabetrinil).

Safeners are known to act as herbicides and accordingly, besides having a herbicidal effect on harmful plants, also act to protect crop plants.

The weight ratio of the herbicidal composition to the safener usually depends on the application rate of the herbicide and the effect of the safener, and can vary within a wide range, for example between 90000:1-1:5000, preferably between 7000:1-1 :1600, especially in the range of 3000:1-1:500, especially 1:100-20:1. The safeners can be formulated with A and B in finished formulations or supplied and used in the form of tank mixes with the described herbicidal compositions.

The invention provides the use of a herbicidal composition for controlling undesired vegetation.

The invention provides a use of a herbicidal composition for controlling unwanted plant growth of broad-leaved weeds, sedge weeds and gramineous weeds.

The herbicidal compositions according to the invention have excellent activity against a broad spectrum of economically important monocotyledonous and dicotyledonous harmful plants, such as broad-leaved weeds, grassy weeds or sedges, including species resistant to herbicidally active compounds. Herbicidally active compounds such as glyphosate, glufosinate, atrazine, imidazolinone herbicides and sulfonylureas.

Some representative specific examples of monocotyledonous and dicotyledonous weed flora which can be controlled by the herbicidal compositions according to the invention may be mentioned, but not limited to certain species.

Examples of weed species on which the herbicidal composition is effective are, for example, the following genera of monocotyledonous weeds, such as Echinochloa spp., Panicum spp., Poa spp. ., Leptochloa spp., Brachiaria spp., Digitaria spp., Setaria spp., Cyperus, Yujiuhua ( Monochoria spp.), Plumeria spp., Sagittaria spp., Eleocharis spp., Scirpus spp., Alismas pp., Aneilema spp. ), Blyxa spp., Eriocaulon spp., Potamogeton spp., etc. are well controlled, especially the following species: Echinochloaoryzicola, Duck Tongue Grass (Monochoria vaginalis), Yak grass (Eleocharis acicularis), Horsetail water chestnut (Eleocharis kuroguwai), Cyperus difforis (Cyperus diffortinus), Water sedge (Cyperus serotinus), Sagittaria pygmaea, Narrow-leaved Alisma (Alisma canaliculatum), firefly Lin (Scirpus juncoides). In the case of dicotyledonous weeds, the spectrum of activity extends to genera such as Polygonum spp., Rotala spp., Lindernia spp., Bidens spp. .), Sphenoclea spp., Dopatrium spp., Eclipta spp., Elatine spp., Gratiola spp., Lindernia spp., Ludwigia spp., Oenanthe spp., Ranunculus spp., Deinostema spp., etc. In particular species such as Echinolchloacrus-galli (ECHCG), Leptochloa chinensis (LEFCH), yellow nutsedge (Cyperus esculentus; CYPES), Cyperus difformis L. ), Solanum nigrum L., Abutilon theophrasti Medic, Acalypha australis L, Rotalaindica, Sphenoclea zeylanica, Lindernia procumbens, Clove (Polygonum Ludwigia prostrate), eye beetroot (Potamogeton distinctus), chickweed (Elatine triandra), and cress (Oenanthe javanica).

The invention also provides the use of a herbicidal composition for controlling undesired vegetative growth in useful crops.

The herbicidal composition of the present invention can be used, for example, on fields where the following useful crops are cultivated:

Food crops, including, for example:

Cereals (small grains) such as wheat (Triticum aestivum) and wheat-like crops such as durum wheat (T.durum), emmer wheat (T.monococcum), emmer wheat (T.dicoccon) and spelled wheat (T. T. spelta), rye (Secale cereale), triticale (Tritiosescale), barley (Hordeum vulgare);

Corn (Zea mays);

Sorghum (eg Sorghum bicolour);

Rice (Oryza) such as Oryza sativa and Oryza glabra rima;

sugar cane;

Legumes (Fabaceae) including, for example, soybeans (Glycine max.), peanuts (Arachishypogaea) and legume crops such as peas (including Pisum sativum, pigeonpea and cowpea), kidney beans (including broad bean (Vicia faba, Vigna and Phaseolus) and lentils (lensculinaris var.);

Brassicaceae, including, for example, canola (Brassica napus), rape (Brassicanapus), cabbage (B. oleracea var.), mustard greens such as mustard (B. juncea), cabbage (B. campestris), tree mustard (B. narinosa), black mustard (B. nigra) and Mediterranean wild turnip (B. tournefortii); and turnip (Brassicarapa var.);

Other broadleaf crops including, for example, sunflower, cotton, flax, linseed, sugar beets, potatoes and tomatoes;

TNV crops (TNV: trees, nuts and vines) including, for example, grapes, citrus, pome fruits such as apples and pears, coffee, pistachios and oil palms, stone fruits such as peaches, almonds, walnuts, olives, cherries, plums and apricots ;

Turf, pasture and pasture;

onion and garlic;

Ornamental bulbs such as tulips and daffodils;

conifers and deciduous trees such as Pinus, fir, oak, maple, dogwood, hawthorn, crabapple and Rhamnus (buckthorn);

Garden ornamentals such as petunias, marigolds, roses, and snapdragons.

The herbicidal composition of the present invention is especially suitable for use on wheat, barley, rye, triticale, durum wheat, rice, corn, sugarcane, sorghum, soybeans, legume crops such as peas, beans and lentils, peanuts, sunflowers, sugar Beets, potatoes, cotton, Brassica crops such as canola, canola, mustard greens, cabbages and turnips, turf, grapes, pome fruits such as apples and pears, stone fruits such as peaches, almonds, walnuts, olives, cherries, Prunes and apricots, citrus, coffee, pistachios, garden ornamentals such as roses, petunias, marigolds, snapdragons, bulbous ornamentals such as tulips and daffodils, conifers and deciduous trees such as pines, firs, oaks, maples, Control/control of unwanted vegetation in dogwood, hawthorn, crabapple.

The herbicidal composition of the present invention is most suitable for use on wheat, barley, rye, triticale, durum wheat, rice, corn, sugarcane, sorghum, soybeans, legume crops such as peas, beans and lentils, peanuts, sunflowers, sugar Beets, potatoes, cotton, Brassica crops such as canola, canola, mustard greens, cabbage and turnips, turf, grapes, stone fruits such as peaches, almonds, walnuts, olives, cherries, plums and apricots, citrus and pistachios Medium control/control of unwanted vegetation growth.

Especially in crops such as wheat, barley, rye, rice, corn, sugar cane, sorghum, legumes, peanuts, sunflowers, sugar beets, potatoes, cotton, brassicas, turf, grapes, pome fruits, stone fruits, citrus In , coffee, pistachios, garden ornamentals, conifers and deciduous trees, they are effective in controlling broadleaf, grass and sedge weeds with essentially no crop damage.

The herbicidal compositions according to the invention are especially suitable for controlling undesired vegetation in cereal crops. For example, the herbicidal composition of the present invention is effective against barnyardgrass (Echinolchloacrus-galli; ECHCG), Chinese daughter genus (Leptochloachinensis; LEFCH), yellow nutsedge (yellow nutsedge) (Cyperus esculentus; CYPES), heteromorphous sedge (Cyperus difformis L. ), Solanum nigrum L., Abutilon theophrastiMedic, Acalypha australis L, Scirpus juncoides Roxb, and Alismaplantago-aquatica Linn. showed obvious synergistic effects.

The herbicidal compositions according to the invention are also excellent for controlling undesired vegetation in non-crop areas. Undesirable vegetation growth in non-crop areas such as roads, railways, grass, utility lines, especially in areas where trees are present.

The herbicidal composition according to the invention can also be used in crop plants which are resistant to one or more herbicides due to genetic engineering or breeding, which are resistant to one or more pathogens due to genetic engineering or breeding, such as Phytopathogenic fungi are resistant or resistant to insect attack due to genetic engineering or breeding. Suitable are, for example, crops tolerant to synthetic auxins, preferably maize, wheat, sunflower, rice, canola, rape, soybean, cotton and sugar cane, or resistant to certain insect attacks due to the introduction of genes to Bt toxins by genetic modification crops.

Use of a herbicidal composition for controlling undesired vegetation in useful crops, said herbicidal composition being tolerated by said useful crops.

The herbicidal compositions according to the invention are highly suitable for the selective control of undesired vegetation in cereal crops, particularly preferably rice. Said rice crops include all possible forms of rice plant cultivation under the most diverse conditions, such as upland cultivation, upland cultivation or paddy cultivation, where irrigation can be natural (rainfall) and/or artificial (watering). The rice used for this purpose may be conventionally bred seed, hybrid seed or resistant - at least tolerant - seed (obtained by mutation or transgene), which may be derived from indica or japonica varieties or hybrids thereof.

The present invention provides a method for controlling undesired vegetation by applying the herbicidal compositions A and B of the present invention jointly or separately to the undesired vegetation or its growing locus.

A method of controlling unwanted vegetation comprising: (i) before germination of unwanted vegetation (pre-emergence); (ii) after germination of unwanted vegetation (post-emergence); or (iii) after (i) ) and (ii), a herbicidally effective amount of the herbicidal composition of the present invention is applied to the undesired plants or their growth sites. Preferably also germinated undesired plants (e.g. broadleaf weeds, grasses, sedges or undesired crop plants) are applied before the undesired plants germinate, unlike the sown/planted crop plants. growth period is irrelevant.

A method of controlling undesired plant growth, comprising contacting undesired plants or their growth sites with a herbicidally effective amount of the herbicidal composition of the present invention or applying a herbicidally effective amount of the present herbicidal composition to soil or water to Prevents germination or growth of unwanted vegetation.

The herbicidal composition of the present invention contains effective amounts of A and B to have a synergistic effect. A synergistic effect can be observed when A and B are applied together or nearly simultaneously; also when A and B are applied separately at different times; A and B can also be applied sequentially, e.g. pre-emergent and then emergent Post-emergence application, or first early post-emergence application, and then mid- or late post-emergence application. The joint or almost simultaneous administration of A and B is preferred here, and joint administration is particularly preferred.

If the herbicidal composition of the present invention is applied to the soil surface before germination, germination of weed seedlings is completely prevented, or the weeds grow to the cotyledon stage, but then they stop growing and finally die completely after two to four weeks.

If the active compound is applied to the green parts of the plant after germination, growth is likewise abruptly stopped within a relatively short time after treatment, and the weedy plants remain in the growth phase at the point of application, or at a certain Complete death after time, in this way eliminates early and continuously the competition by weeds which are harmful to the crop plants. For rice, the herbicidal composition can also be applied in water, which is then absorbed through the soil, shoots and roots.

When A and B are administered together, there is synergy. Here, the activity of the composition is greater than the expected sum of the activities of the individual herbicides applied. Synergistic action enables lower application rates to control a wider spectrum of broadleaf weeds, grasses and sedges, faster onset of herbicidal action, longer duration, and harmful effects with only one or a few applications Plants have better control and the application period can be extended. The dosages used in the herbicidal compositions and the effective dosages of A and B are adjusted to low levels to minimize their effects on the soil. This makes it possible to apply the herbicidal composition of the present invention not only to sensitive crops, but also to almost avoid groundwater pollution. The herbicidal compositions according to the invention allow the required application rates of the active ingredients to be significantly reduced.

The above characteristics and advantages are necessary for weed control to keep agricultural/forestry/horticultural crops or green areas/grasslands free from unwanted competing plants, thereby ensuring and/or increasing useful crop yield levels from a qualitative and quantitative point of view . With regard to said properties, such herbicidal compositions significantly exceed the state of the art in the art.

The invention also provides a method for controlling undesired vegetation, which comprises applying the herbicidal compositions according to the invention in the presence of plants of useful plants, seeds of useful plants or other reproductive parts of useful plants. The herbicidal compositions according to the invention are preferably applied directly to the plants or the locus of the plants before sowing or germination or after sowing and before germination of useful crops.

The invention also provides a method for controlling undesired vegetation, preferably in useful crop plants, especially cereal crops, which method comprises the active ingredients A and B as the herbicidal compositions according to the invention, e.g. Joint or separate application to plants (e.g. undesired plants such as monocotyledonous or dicotyledonous broad-leaved weeds, grasses, sedges or undesired crop plants), seeds (e.g. caryopsis, seeds or Vegetative reproductive organs, such as tubers and shoots with buds), or to the area where the plants grow (eg cultivated areas, which may also be covered with water). One herbicide may be applied to the plant, the seed, or the area where the plant is growing (eg, a cultivated area) before, after, or simultaneously with the other herbicide.

The herbicidal compositions of the present invention can be applied in a conventional manner by using techniques well known to those skilled in the art. Suitable techniques include spraying, misting, dusting, broadcasting or watering. 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 according to the invention.

If the active ingredients are not well tolerated by certain crops, the spraying of the herbicidal compositions can be directed by means of spray equipment so that they contact the sensitive crops as little as possible when they reach the foliage of underlying unwanted plants or the bare soil.

The method of the present invention is most preferably used for the control of unwanted plants or their growing loci for weeds in areas where crops are grown or in areas where crops are to be grown. When applied to crop growing areas, the rate of application should be sufficient to control weed growth without causing serious and permanent damage to the crop.

"Unwanted plants" are understood to mean all plants growing where their growth is not desired. These can be, for example, harmful plants (such as monocotyledonous or dicotyledonous weeds, grass weeds, sedges or unwanted crop plants), including, for example, against certain herbicidally active compounds (such as glyphosate, grass Ammonium phosphate, atrazine, imidazolinone herbicides and sulfonylureas) are resistant to those plants.

The herbicidal composition of the present invention can be applied by various application methods commonly used for rice herbicides. Particularly preferably, it is applied by spray application and/or by dipping application. In dipping application, the water in the paddy field has covered the ground up to 3-20 cm at the time of application. Then the herbicidal composition of the present invention is directly placed in the water of the paddy field. Worldwide, spray application is mainly used for direct-sowed rice, while dip application is mainly used for transplanted rice.

The present invention also provides a herbicidal composition, the active component is composed of A and B, and also includes filler and/or surface active agent. In the herbicidal composition, the total amount of A and B accounts for 5%-90% by weight of the herbicidal composition, preferably 10%-80%, more preferably 10%-70%.

The total amount of A and B can also account for 5%, 8%, 10%, 12%, 15%, 18%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 60%, 70%, 75%, 80%, 85%, 90%.

The herbicidal composition of the present invention can be converted into conventional preparations, such as wettable powder, emulsifiable concentrate, suspension, microcapsule, microemulsion, aqueous emulsion, suspoemulsion, water-dispersible granule, aqueous agent, microcapsule suspension-suspension agent, Ultra-low volume liquid, tablet, microcapsule granule, granule.

According to the present invention, the term "filler" refers to a natural or synthetic organic or inorganic compound that can be combined or associated with an active ingredient to make it easier to apply to a subject such as a plant, crop or grass. Thus, the filler is preferably inert, at least agriculturally acceptable. The filler can be solid or liquid.

Suitable solid carriers are: for example powders of vegetable origin (e.g. soybean flour, starch, cereal flour, wood flour, bark flour, sawdust, walnut shell powder, bran, cellulose powder, coconut shells, corn cobs and tobacco stalks). Particles, residues after extraction of plant essence, etc.), clays (such as kaolin, bentonite, acid china clay, etc.), talcum powder. Silica (such as diatomaceous earth, silica sand, mica, hydrous silicic acid, calcium silicate), activated carbon, natural minerals (pumice, attapulgite, zeolite, etc.), fired diatomaceous earth, sand, plastic media, etc. (such as polyethylene, polypropylene, polyvinylidene chloride, etc.), inorganic mineral powders such as potassium chloride, calcium carbonate, and calcium phosphate, chemical fertilizers such as ammonium sulfate, ammonium phosphate, urea, and ammonium chloride, and soil fertilizers, These substances may be used alone or in combination of two or more.

Suitable liquid carriers can be selected from the following materials, such as water, alcohols (such as methanol, ethanol, isopropanol, butanol, ethylene glycol, etc.), ketones (such as acetone, methyl ethyl ketone, diisobutyl methyl Ketone, cyclohexanone, etc.), ethers (such as ether, dioxane, methyl cellulose, tetrahydrofuran, etc.), aliphatic hydrocarbons (such as kerosene, mineral oil, etc.), aromatic hydrocarbons (such as Benzene, toluene, xylene, solvent naphtha, alkylnaphthalene, chlorinated aromatics, chlorinated aliphatic hydrocarbons, chlorobenzene, etc.), halogenated hydrocarbons, amides, sulfones, dimethyl sulfoxide, mineral and vegetable oils, animal oil, etc.

Suitable surfactants are emulsifiers, dispersants or wetting agents having ionic or nonionic properties, or mixtures of these surfactants. Suitable for these surfactants are fatty alcohol polyoxyethylene ether, polyoxyethylene alkyl aryl ether, polyoxyethylene higher fatty acid ester, polyoxyethylene alcohol or phenolic phosphate, polyhydric alcohol fatty acid ester, alkane Sodium aryl sulfonate, naphthalene sulfonic acid polymer, lignin sulfonate, polymer comb-shaped dendritic copolymer, butyl naphthalene sulfonate, alkylaryl sulfonate, sodium alkyl sulfosuccinate , Fatty alcohol and ethylene oxide condensate, alkyl taurate and other polyacrylates, protein hydrolyzate. Suitable oligosaccharides or polymers are eg based on vinylic monomers, acrylic acid, polyoxyethylene or polyoxypropylene alone or in combination with eg (poly)alcohols or (poly)amines. A surfactant must be present when one of the active compounds and/or one of the inert carriers is insoluble in water and when applied in water. The proportion of surfactant is 5%-40% of the herbicidal composition of the present invention.

If appropriate, the herbicidal compositions according to the invention can also be present in further additional components, for example protective colloids, adhesives, adhesives, thickeners, thixotropes, penetrants, stabilizers, masking agents, sequestering agents, complexing agents, compound forming agent. In general, the active ingredients may be combined with any solid or liquid additive conventionally used for formulation purposes.

The herbicidal compositions of the present invention may be mixed in a known manner with at least one of the following substances: liquid or solid carriers, emulsifiers, dispersants, wetting agents and/or protective colloids , Adhesives, adhesives, thickeners, thixotropic agents, penetrating agents, stabilizers, masking agents, sequestering agents, complex forming agents, water and other processing aids.

The herbicidal compositions according to the invention can be formulated by known methods, for example as admixtures of the individual components, if appropriate, with other active compounds, additives and/or customary formulation auxiliaries, after dilution of the composition with water in a customary manner application; or as a tank mix by co-diluting with water the components formulated separately or partly formulated separately. It is also possible to administer the components formulated separately or partly separately. The herbicide or herbicidal composition can also be applied in several parts (sequential application), for example first a seed dressing application or a pre-sow/pre-plant treatment or a pre-emergence application followed by a post-emergence application or an early post-emergence application followed by a mid-term application Or late post-emergence application. Preference is given here to using the active compounds of the compositions jointly or almost simultaneously, particularly preferably coadministration.

According to the characteristics of the preparation, the application method can be selected according to the intended target and the prevailing environment, such as foliage, soaking, spraying, dusting, and scattering.

A and B can be administered as such, in the form of their formulations or the use forms prepared therefrom by further dilution, such as ready-to-use solutions, suspensions, emulsions, powders, pastes and granules. They can be applied in customary manner, for example by watering, spraying, atomizing or spreading.

The herbicidal compositions according to the invention are in an easier-to-use form, since the amounts of the components are already in optimal ratios. In addition, the auxiliary agents in the formulation can be optimized by adjusting each other.

Formulation example

Example 1 6% Clorazosulfuron-methyl+60% Flufenacet Suspending Concentrate

Mix the active components, dispersant, wetting agent and water according to the proportion of the formula, and after grinding and/or high-speed shearing, a suspension of 6% clofensulfuron-methyl + 60% flufenacet is obtained agent.

Example 2 10% Clorazosulfuron-methyl + 40% Mezafen Wettable Powder

The active components, various additives and fillers are mixed according to the proportion of the formula, and after being pulverized by an ultrafine pulverizer, a wettable powder of 10% closulfuron-methyl + 40% mezafen is obtained.

Example 3 10% Clorazosulfuron-methyl + 10% Alachlor WP

The active components, various additives and fillers are mixed according to the proportion of the formula, and after being pulverized by an ultrafine pulverizer, a wettable powder of 10% closulfuron-methyl + 10% alachlor is obtained.

Example 4 10% Clorazosulfuron-methyl+50% Flufenacet Water Dispersible Granules

The active component, dispersant, wetting agent, disintegrating agent and filler are mixed evenly according to the ratio of the formula, and then crushed into a wettable powder by airflow, and then a certain amount of water is added to mix and extrude the material. After drying and sieving, a water-dispersible granule of 10% clofensulfuron-methyl+50% flufenacet was obtained.

Example 5 2% Clorazosulfuron-methyl+30% Butachlor EC

The above ingredients were prepared according to the proportion, stirred evenly to obtain a homogeneous phase, and an emulsifiable concentrate of 2% closulfuron-methyl+30% butachlor was obtained.

Example 6 10% Clorazosulfuron-methyl+50% Butachlor Suspoemulsion

Clopyrazosulfuron-methyl, sodium methylnaphthalenesulfonate formaldehyde condensate, and corn oil are ground and/or high-speed sheared to obtain clopyrazosulfuron-methyl suspension concentrate; butachlor, SOLVESSO ^TM 100, ethoxylated Mix and stir the castor oil evenly to obtain butachlor emulsifiable concentrate; add the obtained butachlor-methyl emulsifiable concentrate into the chlorpyrazosulfuron-methyl suspending agent to obtain a suspoemulsion of 10% chlorpyrazosulfuron-methyl+50% butachlor-methyl.

Example 7 40% Clorazosulfuron-methyl + 50% Dibenzamide WP

The above components are mixed in proportion, ground and pulverized to prepare a wettable powder of 40% closulfuron-methyl+50% benzamide.

Example 8 20% Clorazosulfuron-methyl+60% Flufenacet Water Dispersible Granules

Mix clopyrazosulfuron-methyl, flufenacet active components, dispersant, wetting agent, disintegrating agent and filler according to the proportion of the formula, and then crush it into a wettable powder by airflow; then add a certain amount of water to mix and extrude Pressed material. After drying and sieving, a water-dispersible granule of 20% clofensulfuron-methyl+60% flufenacet was obtained.

Example 9 2% Clorazosulfuron-methyl+3% Pretilachlor Water Emulsion

Oil phase:

water box:

Sodium salt of sulfonated naphthalenesulfonic acid-formaldehyde condensation product 1%

Water make up to 100%

Dissolve chlorpyrazosulfuron-methyl and pretilachlor in methyl oleate, add ethoxylated castor oil to obtain the oil phase; mix the sulfonated sodium salt of naphthalenesulfonic acid-formaldehyde condensation product with water and mix well according to the formula The water phase is obtained; the oil phase is added to the water phase under stirring to obtain a water emulsion of 2% closulfuron-methyl+3% pretilachlor.

Example 10 5% chlorpyrazosulfuron-methyl + 25% high-efficiency metolachlor wettable powder

The above components are mixed in proportion, ground and pulverized to prepare a wettable powder of 5% chlorpyrazosulfuron-methyl+25% high-efficacy metolachlor.

Example 11 1% Clorazosulfuron-methyl + 10% Napropamide Coated Granules

In a mixer, uniformly coat the finely ground active ingredient onto a polyethylene glycol-moistened carrier in such a way that a dust-free coating of 1% closulfuron-methyl + 10% napropamide is obtained Granules.

Example 12 2% Clorazosulfuron-methyl + 30% Butachlor WP

The above components are mixed in proportion, ground and pulverized to prepare a wettable powder of 2% closulfuron-methyl+30% butachlor.

Example 13 5% Clorazosulfuron-methyl+25% Butachlor Extruded Granules

The active ingredient is mixed with the auxiliaries and ground, and the mixture is moistened with water. The mixture was extruded and then dried in an air stream to obtain 5% closulfuron-methyl + 25% butachlor extruded granules.

Example 14 5% Clorazosulfuron-methyl+5% Butachlor Seed Coating Agent

The above-mentioned components are uniformly mixed in proportion, and sand-milled to prepare a seed coating agent of 5% closulfuron-methyl+5% butachlor.

Example 15 5% Clorazosulfuron-methyl+20% Butachlor Microcapsule Suspension-Suspension Concentrate

Add the oil phase formed by PAPI, butachlor, and SOLVESSO ^TM 100 into the aqueous solution containing Synperonic PE/64 to form an emulsion. Then heat and keep warm at 50° C. and add catalyst to react for 2 hours. After cooling, microcapsules of butachlor were obtained.

Synperonic PE/64, dispersant LFH, defoamer, urea, clopyrazosulfuron-methyl and water are mixed evenly in proportion, and sand milled to prepare a suspension.

The obtained butachlor microcapsules are added to the suspension concentrate of closulfuron-methyl, and stirred evenly to obtain a microcapsule suspension-suspension concentrate of 5% closulfuron-methyl+20% butachlor.

Example 16 10% Clorazosulfuron-methyl+50% Butachlor Suspoemulsion

Butachlor was dissolved in SOLVESSO ^TM 200, and ethoxylated castor oil was added to obtain butachlor emulsifiable oil.

Clorazosulfuron-methyl, disodium fatty alcohol polyoxyethylene ether sulfosuccinate monoester, and the above-mentioned components are uniformly mixed in proportion, and sand-milled to prepare a suspension.

The oil phase containing butachlor was added to the suspending agent containing closulfuron-methyl to obtain a suspoemulsion of 10% closulfuron-methyl+50% butachlor-methyl.

Example 17 1% Clorazosulfuron-methyl+10% Butachlor EC

The above components were mixed and stirred until a transparent homogeneous phase was obtained to obtain an emulsifiable concentrate of 1% closulfuron-methyl+10% butachlor.

Example 18 5% Clorazosulfuron-methyl+15% Butachlor Oil Suspension Concentrate

Mix the active components, dispersant, wetting agent and methyl oleate according to the proportion of the formula, and after grinding and/or high-speed shearing, 5% chlorpyrazosulfuron-methyl + 15% butachlor oil suspension.

Example 19 20% Clorazosulfuron-methyl+80% Butachlor

Clopyrazosulfuron 20%

Butachlor 80%

Mix chlorpyrazosulfuron-methyl and butachlor evenly in proportion.

Example 20 5% Clorazosulfuron-methyl + 30% Butachlor + 65% Isoxadifen

Clopyrazosulfuron 5%

Butachlor 30%

Isoxadifen 65%

Mix clopyrazosulfuron-methyl, butachlor, and isoxadifen evenly in proportion.

Example 21 10% Clorazosulfuron-methyl+90% Butachlor

Clopyrazosulfuron 10%

Butachlor 90%

Mix chlorpyrazosulfuron-methyl and butachlor evenly in proportion.

Example 22 10% Clorazosulfuron-methyl + 50% Butachlor + 40% Cloclofenac

Clopyrazosulfuron 10%

Butachlor 50%

Cloclofenac 40%

Mix chlorpyrazosulfuron-methyl, butachlor, and clofenac-ethyl according to the proportion and mix evenly.

The following examples illustrate the invention

Evaluation of the post-emergence herbicidal activity of herbicidal compositions in a greenhouse

Seeds of the desired test plant species are planted in pots under greenhouse conditions. Use standard soil as the cultivation substrate. When the plants reached the third to fourth true leaf stage, the herbicides were applied to the leaves alone or in combination. Each treatment was repeated 4 times.

investigation method:

After 21 days of test treatment, visually observe the damage symptoms and growth inhibition of the target, weigh the fresh weight of the aerial part, and calculate the fresh weight inhibition rate (%).

The evaluation of the synergistic effect shown in the mixed application of two or more herbicidal active ingredients was determined based on Colby's method described in "Calculation Synergistic and Antagonistic Response of Herbicide Combinations" (Weeds 15/1 (1967), S.R. Colby) of.

In the formula, X is the fresh weight inhibition rate of the target weeds when (a) is used alone at a certain dose.

Y is (b) the fresh weight inhibition rate of the target weeds when a certain dose is used alone.

E ₀ is the theoretical value of the inhibition rate of the fresh weight of the target weeds when (a) and (b) are mixed.

E is the measured value of the inhibition rate of the fresh weight of the target weeds when the two agents (a) and (b) are mixed.

If the actual weed control rate (E) observed in the biological test exceeds the expected value (E ₀ ) calculated using Colby's method, it means that the efficacy of the herbicidal composition is greater than the sum of the efficacy of the components, which means that the composition Has a synergistic effect.

Table 1 shows the synergistic activity of the herbicidal composition of chlorpyrazosulfuron-methyl+butachlor to barnyardgrass (21 days after application) in the greenhouse; Barnyardgrass (21 days after application) activity, it was found that the combination of pyrazosulfuron-methyl and butachlor showed only additive effect and no synergistic activity.

Table 1

Table 2 shows the synergistic activity of the herbicidal composition of Clorazosulfuron-methyl+Butachlor to Cyperus difformis L (21 days after application) in the greenhouse; The activity of the combination of amines against sedge (21 days after application) in the greenhouse, it was found that the combination of pyrazosulfuron-methyl and butachlor showed only additive effect and no synergistic activity.

Table 2

Table 3 shows the synergistic activity of the herbicidal composition of chlorpyrazosulfuron-methyl+butachlor to the genus Rhizoma genus (21 days after application) in the greenhouse; Activity of S. chinensis (21 days after application) in the greenhouse, it was found that the combination of pyrazosulfuron-methyl and butachlor showed only additive effect, no synergistic activity.

table 3

The data in Table 1, Table 2 and Table 3 demonstrate that the herbicides of the combination of chlorpyrazosulfuron-methyl + butachlor exhibit synergistic efficacy in weed control.

Table 4 shows the synergistic activity of the herbicidal combination of chlorpyrazosulfuron-methyl + pretilachlor on barnyardgrass (21 days after application) in the greenhouse.

Table 4

Table 5 shows the synergistic activity of the herbicidal composition of chlorpyrazosulfuron-methyl + pretilachlor against Cyperus difformis L in the greenhouse (21 days after application).

table 5

Table 6 shows the synergistic activity of the herbicidal combination of chlorpyrazosulfuron-methyl + pretilachlor against S. chinensis (21 days after application) in the greenhouse.

Table 6

The data in Table 4, Table 5, and Table 6 demonstrate that the herbicides of the combination of chlorpyrazosulfuron-methyl + pretilachlor exhibit synergistic efficacy in weed control.

Table 7 shows the synergistic activity of the herbicidal composition of chlorpyrazosulfuron-methyl + high-efficiency metolachlor on Alisma plants in the greenhouse (21 days after application).

Table 7

The data in Table 7 prove that the herbicidal composition of chlorpyrazosulfuron-methyl + highly effective metolachlor exhibits a synergistic effect.

Table 8 shows the synergistic activity of the herbicidal combination of chlorpyrazosulfuron-methyl + flufenacet on firefly plants in the greenhouse (21 days after application).

Table 8

The data in Table 8 demonstrate that the herbicidal combination of clofensulfuron-methyl+flufenacet exhibits synergistic effect.

security role

Rice seeds were sown directly in silt soil and treated with herbicide 12 days after sowing. At this stage, separate chlorpyrazosulfuron-methyl, butachlor, pretilachlor, high-efficiency metolachlor, flufenacet, chlorpyrazosulfuron-methyl+pretilachlor, chlorpyrazosulfuron-methyl+butachlor Compositions of chlorpyramid, clofensulfuron-methyl + high-efficiency metolachlor, chlorpyrazosulfuron-methyl + flufenacet were applied to the test plants. The phytotoxicity of the herbicides to the crops was assessed using a percentage scale 7-10 days after application. 100% means complete death of the test plants, 0% means no phytotoxic effect.

Table 9

Table 10

Table 11

Table 12

It can be seen from Table 9-12 that the combination of chlorpyrazosulfuron-methyl and butachlor, pretilachlor, high-efficiency metolachlor or mefenacet improved the performance of chlorpyrazosulfuron-methyl, butachlor, The compatibility of pretilachlor, high-efficiency metolachlor or mefenazamide with crops, reducing or preventing the treatment of clopyrazosulfuron-methyl, butachlor, pretilachlor, and high-efficiency metolachlor damage caused by plants of useful crops, seeds of useful crops or other reproductive parts of useful crops.

In summary, the herbicidal composition of the present invention has a control effect superior to the activity of each component when it is applied alone, and the drug efficacy test has verified that the combination has a synergistic effect, expands the weed control spectrum, and controls grasses in crop fields with one application. , broad-leaved weeds and sedge weeds, reduce the frequency of spraying, reduce control costs, slow down the emergence of weed resistance, good crop safety, and meet the safety requirements of pesticide preparations.

Claims (16)

1. a kind of Herbicidal combinations, it is characterised in that its active component is made up of component A and B, wherein component A is the phonetic sulphur of chlorine pyrrole Grand, component B is at least one compound as described below：Naproanilide, pretilachlor, napropamide, diphenamide, butachlor, second Careless amine, dimethenamid, dimethachlor, alachlor, isopropyl methoxalamine, Smetolachlor, propisochlor, pethoxamid, pyrrole Cafenstrole, P DimethenamidP, propachlor, fentrazamide, P DimethenamidP, propachlor, diphenamide, flufenacet, anilofos, Piperophos and cafenstrole；Wherein the weight proportion of component A and B is 1:1-1:100, preferably 1:1-1:50, more preferably 1:1-1:40, it is further preferably 1:5-1:30, more preferably 1:5-1:25, more preferably 1:5-1:20, more preferably 1:1-1:15, It is further preferably 1:1-1:10.

2. Herbicidal combinations according to claim 1, it is characterised in that the active component of the Herbicidal combinations is chlorine pyrrole Sulfometuron Methyl+pretilachlor, halosulfuronmethyl+butachlor, halosulfuronmethyl+flufenacet, halosulfuronmethyl+napropamide, chlorine pyrrole are phonetic Sulphur is grand+Acetochlor, halosulfuronmethyl+alachlor, halosulfuronmethyl+isopropyl methoxalamine, the isopropyl first grass of halosulfuronmethyl+efficiently Amine, halosulfuronmethyl+propisochlor, halosulfuronmethyl+metazachlor or halosulfuronmethyl+anilofos.

3. Herbicidal combinations according to claim 1, it is characterised in that the active component of the Herbicidal combinations is chlorine pyrrole Sulfometuron Methyl+pretilachlor, halosulfuronmethyl+butachlor, halosulfuronmethyl+Smetolachlor or halosulfuronmethyl+fluorine thiophene grass Amine.

4. Herbicidal combinations according to claim 1, it is characterised in that the Herbicidal combinations also include filler and/ Or surfactant.

5. Herbicidal combinations according to claim 1, it is characterised in that the formulation of the Herbicidal combinations is wettable powder Agent, missible oil, suspending agent, microcapsules, microemulsion, aqueous emulsion, suspended emulsion, water dispersible granules, aqua, microcapsule suspension-suspendinagent agent, Ultra low volume liquids, tablet, micro-capsule granules or granule.

6. Herbicidal combinations according to claim 1, it is characterised in that the total amount of the component A and B accounts for the weeding group Compound 5%-90% by weight, more preferably preferably 10%-80%, 10%-70%.

7. Herbicidal combinations according to claim 1, it is characterised in that the Herbicidal combinations also include safener, institute State safener in study on brassinolide, benoxacor, fenclorim, dichlormide, mefenpyrdiethyl or isoxadifen at least One kind, the safener is 1 relative to the weight proportion of component A and B total amount:100-20:1.

8. purposes of the Herbicidal combinations according to claim 1 in undesirable plant growth is prevented and treated.

9. Herbicidal combinations according to claim 1 are preventing and treating broad-leaved section weeds, sedge weed or grassy weed not Purposes in desired plant growth.

10. Herbicidal combinations according to claim 1 are preventing and treating barnyard grass (Echinolchloacrus-galli；ECHCG)、 China Sprangletop (Leptochloa chinensis；LEFCH), yellow nut nutgrass flatsedge (yellow nutsedge) (Cyperus esculentus；CYPES), difformed galingale herb (Cyperus difformis L), black nightshade (Solanum nigrum L.), Tong fiber crops (Abutilon theophrasti Medic), acalypha copperleaf (AcalyphaaustralisL), firefly Lin (Scirpus Juncoides Roxb), the use in Waterplantain (Alisma plantago-aquatica Linn.) undesirable plant growth On the way.

11. Herbicidal combinations according to claim 1 preventing and treating wheat, corn and soybean, sugar beet, sugarcane, cotton, In paddy rice, beans, flax, barley, oat, rye, triticale, rape, potato, broomcorn millet, herbage, greenery patches or lawn, fruit tree kind Use in the Zhong Huofei crop areas of plant garden in broad-leaved section weeds, sedge weed or the undesirable plant growth of grassy weed On the way.

A kind of 12. methods for preventing and treating undesirable plant growth, it is characterised in that methods described includes：I () is in undesirable plant Before thing germination；(ii) after undesirable plant germination；Or (iii) is at (i) and (ii), by described in claim 1 Herbicidal combinations are applied to undesirable plant or its growth place.

A kind of 13. methods for preventing and treating undesirable plant growth, it is characterised in that by Herbicidal combinations described in claim 1 Component A and B collectively or individually are applied to undesirable plant or its growth place.

A kind of 14. methods for preventing and treating undesirable plant growth, it is characterised in that by the Herbicidal combinations described in claim 1 Applied in the presence of other reproductive parts of plant, the seed of useful crop or useful crop in useful crop.

15. methods according to claim 14, it is characterised in that by the Herbicidal combinations described in claim 1 useful The location of plant or plant is directly applied to before germinateing before crop is sowed or germinates or after planting.

A kind of 16. methods for preventing and treating undesirable plant growth, it is characterised in that including making undesirable plant or its growth field Contacted with the Herbicidal combinations described in the claim 1 of herbicidally effective amount or in soil or water using herbicidally effective amount power Profit requires the Herbicidal combinations described in 1 to prevent from being not intended to the germination or growth of plant.