CN106135215A - Herbicidal combinations - Google Patents

Abstract

The present invention relates to a kind of Herbicidal combinations, particularly relate to a kind of binary built, be applied to the Herbicidal combinations in crops field.The present invention relates to a kind of Herbicidal combinations, containing active component benzene flumetsulam and fluoroglycofen-ethyl, described benzene flumetsulam is 1:1 to 1:50 with the weight ratio of Brominal and derivant thereof.The invention still further relates to a kind of Herbicidal combinations and prevent and kill off broad-leaved section weeds, sedge weed, the application of the undesirable plant of grassy weed.The weeding compound of the present invention creates cooperative synergism effect when preventing and kill off field grassy weed, broad leaved weeds and sedge weed.

Description

herbicidal composition

technical field

The invention relates to a herbicidal composition, in particular to a binary compound herbicidal composition applied to crop fields.

Background technique

In recent years, the direction of pesticide development is to embody high efficiency, low toxicity, low residue and no pollution. The specific performance is the pursuit of "three highs", that is, (1) high safety, which not only requires low toxicity, low residue, and pollution-free; (2) high biological activity; (3) high selectivity. Therefore, the performance of current crop protection products is continuously improved to meet the requirements of high efficiency, low toxicity and no pollution.

The most common method for increasing herbicidal activity and broadening the herbicidal spectrum of existing herbicides is to mix two or more herbicidally active substances with different herbicidal activities. When the potency of a mixture of two or more active ingredients is greater than the expected potency level of each active ingredient, we call it "synergy". Therefore, a mixture of two or more herbicidal active ingredients may exhibit superior herbicidal efficacy than individual herbicide applications. However, the synergistic effect present in the described herbicidal mixtures of two or more herbicidally active ingredients has only been observed in a few cases. Due to differences in herbicidal performance, absorption rate, transfer, metabolism, etc., the herbicidal activity of most mixtures is lower than that of each active ingredient applied alone, that is, it shows "antagonism". "Additive action" is exhibited if a mixture of two or more herbicidal active ingredients has the same herbicidal efficacy as a single application of the active ingredients.

Saflufenacil, CAS No. 372137-35-4, chemical name: N'-[2-chloro-4-fluoro-5-(1,2,3,6-tetrahydro-3- Methyl-2,6-dioxo-4-trifluoromethylpyrimidin-1-yl)benzoyl]-N-isopropyl-N-methylsulfonamide, its structural formula is:

Saflufenacil is a newest pyroxindione herbicide developed by BASF, which represents a new level of broadleaf weed control. Saflufenacil is disclosed in WO01/083459. Saflufenacil is suitable for a variety of cropping systems and non-cultivated land, and it can be used to control dicotyledonous weeds before or after emergence of different crops. Saflufenacil is a potent protoporphyrinogen oxidase inhibitor (PPO). Protoporphyrinogen oxidase is required for plant chlorophyll biosynthesis. Inhibition of protoporphyrinogen oxidase results in disruption of cell membranes, resulting in cell leakage, tissue necrosis, and eventually plant death. Saflufenacil is easily absorbed by roots, buds and leaves. Once absorbed, saflufenacil is conducted upwards to various parts of the weed mainly through the xylem.

Bromoxynil (Bromoxynil), molecular formula: C7H3Br2NO, chemical name: 3,5-dibromo-4-carbonyl-1-cyanobenzene, its molecular structural formula is:

Bromoxynil is a contact herbicide for selective post-emergence foliage treatment. It is mainly absorbed by leaves, conducts extremely limited conduction in plants, and quickly causes plant tissue necrosis by inhibiting various processes of photosynthesis. Within 24 hours of application, the leaves chlorotic and necrotic spots appeared. Under the conditions of high temperature and strong light, leaf death will be accelerated. Suitable for wheat, barley, rye, wheat, sorghum, flax and other crop fields to control broad-leaved weeds Polygonum, Chenopodium, Amaranth, Pitch Grass, Solanum nigrum, Cocklebur, Pig hairy vegetables, Maijiagong, Field bindweed, Buckwheat vines, etc. Bromoxynil is widely used abroad as a contact herbicide for selective post-emergence stem and leaf treatment in the form of its octanoate, heptanoate, sodium salt or potassium salt. Octanoyl bromoxynil, 3,5-dibromo-4-octanoyloxybenzonitrile, is disclosed in US 3,592,626. Bromoxynil, 3,5-dibromo-4-heptanoyloxybenzonitrile, is disclosed in US 6,255,252.

The chemical composition, structure and physical and chemical properties of each herbicide are different. Therefore, their herbicidal ability and scope are also different. Some herbicides have a narrow herbicidal spectrum, but they are unique in that they can eradicate weeds that are difficult to eradicate with other herbicides.

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.

Contents of the invention

In order to solve the above-mentioned technical problems, the present invention provides a herbicidal composition, which makes saflufenacil, bromoxynil and their derivatives binary compound, so that the obtained composition can control field grass Gained buffs when dealing with under-basic weeds, broadleaf weeds and sedges.

The present invention aims to provide a herbicidal composition, containing saflufenacil and bromoxynil and its derivatives as active ingredients, which can produce buff.

The technical scheme that the present invention solves its technical problem adopts is:

A herbicidal composition comprising saflufenacil, bromoxynil and derivatives thereof as active ingredients, wherein the ratio of saflufenacil, bromoxynil and derivatives thereof is 1:1-1:50 by weight , preferably 1:1-1:20, more preferably 1:1-1:10.

A herbicidal composition, comprising saflufenacil and bromoxynil and their derivatives, adjuvants and/or fillers as active ingredients.

In the herbicidal composition, the content of the active ingredients saflufenacil, bromoxynil and derivatives thereof accounts for 5%-90% of the herbicidal composition.

In the herbicidal composition, the content of the active ingredients saflufenacil, bromoxynil and derivatives thereof accounts for 10%-80% of the herbicidal composition.

In the herbicidal composition, the content of the active ingredients saflufenacil, bromoxynil and their derivatives accounts for 20%-70% of the herbicidal composition.

In the herbicidal composition, the content of the active ingredients saflufenacil, bromoxynil and their derivatives accounts for 30%-60% of the herbicidal composition.

Saflufenacil can exist in different crystalline or non-crystalline forms, crystalline hydrates and anhydrous crystalline forms.

Bromoxynil and its derivatives can be bromoxynil, bromoxynil octanoyl, bromoxynil heptanoyl, bromoxynil sodium salt, bromoxynil potassium salt.

The herbicidal composition can be formulated into any agriculturally acceptable dosage form. Preferably, the dosage form of the herbicidal composition is wettable powder, emulsifiable concentrate, suspension concentrate, microcapsule, microemulsion, water emulsion, suspoemulsion, water dispersible granule, microcapsule suspension-suspension concentrate, ultra-low volume liquid .

The present invention also provides a method for controlling undesired plants, which comprises applying said herbicidal composition to the locus or leaves or stems of the undesired plants. The undesired plants are grasses, broadleaf weeds and sedges.

The present invention also provides a method of controlling undesired vegetation comprising: (i) before the undesired vegetation germinates (pre-emergence); (ii) after germination of unwanted plants (post-emergence), Or (iii) in (i) and (ii), applying a herbicidally effective amount of said herbicidal composition to the locus or leaves or stems of the undesired plants.

A method for controlling undesired plants by applying the active ingredients saflufenacil and bromoxynil and derivatives thereof jointly or individually to the growth site or leaves or stems of the undesired plants.

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

(1) The herbicidal composition of the present invention, its herbicidal effect exceeds the sum of the expected herbicidal effects of individual compounds;

(2) The herbicidal composition of the present invention exhibits a faster herbicidal rate than the individual compounds;

(3) The herbicidal composition of the present invention exhibits a longer persistence than the individual compounds;

These features provide users with very significant advantages when actually controlling weeds. It can make weed control cheaper, faster, less labor-intensive and more effective, thereby increasing crop yields. It has further been found that the herbicidal compositions of the present invention do not produce an unacceptable increase in phytotoxicity to crop plants. Moreover, the herbicidal composition of the present invention has special effect on the resistant weeds in areas where the sulfonylurea herbicides have been used for a long time, and is safe for subsequent crops.

detailed description

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 spectrum 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 of action when the individual compounds in the range of low application rates have become useless from an agronomic point of view weed control.

The combination of saflufenacil and bromoxynil and its derivatives can produce synergistic effect. The synergistic effect should be able to reduce the application rate of each active substance, increase the efficacy at the same application rate, control hitherto uncontrollable species, prolong the application period and reduce the number of individual applications. For the user, therefore, the combination of active ingredients exhibits a synergistic effect which is an economically and ecologically more advantageous weed resistance system. This synergistic activity can especially reduce the application rate, control a wider spectrum of broadleaf, grass, and sedge weeds, make up for the activity gap of resistant weed populations, provide faster and more reliable activity, and be more effective. Long persistence, just one or a few applications gives complete control of unwanted vegetation and prolongs the persistence of the active ingredients in the composition. The herbicidal composition of the present invention frees crops from competition from undesired plants and/or increases yield in field weed control due to the above properties.

The invention provides a herbicidal composition, comprising saflufenacil, bromoxynil and their derivative active ingredients, and the weight ratio of saflufenacil, bromoxynil and their derivative active ingredients is 50:1 - 1:50, preferably 20:1-1:20, more preferably 10:1-1:10.

A herbicidal composition, comprising saflufenacil and bromoxynil and derivatives thereof, surfactant and/or filler as active ingredients.

In the herbicidal composition, the content of saflufenacil, bromoxynil and their derivatives as active ingredients accounts for 5%-90%, preferably 10%-80%, more preferably 20%-70%, of the herbicidal composition, More preferably 30%-60%.

Saflufenacil can exist in different crystalline or non-crystalline forms, crystalline hydrates and anhydrous crystalline forms.

Bromoxynil and its derivatives can be bromoxynil, bromoxynil octanoyl, bromoxynil heptanoyl, bromoxynil sodium salt, bromoxynil potassium salt.

According to the 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.

Solid fillers suitable for the present invention are: plant matter powders (such as soybean flour, starch, grain flour, wood flour, bark powder, sawdust, walnut shell powder, bran, cellulose powder, coconut shell, corncob and Particles of tobacco stems, residues after extraction of plant essence, etc.), paper, sawdust, synthetic polymers such as pulverized synthetic resins, 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 green ammonium, and soil fertilizers. The substances may be used alone or in combination of two or more.

Liquid extenders suitable for the present invention are, for example, water, alcohols (such as methanol, ethanol, isopropanol, butanol, ethylene glycol, etc.), ketones (such as acetone, methyl ethyl ketone, diisobutyl ketone, Cyclohexanone, etc.), ethers (such as diethyl 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 aromatic hydrocarbons, chlorinated aliphatic hydrocarbons, chlorobenzene, etc.), halogenated hydrocarbons, amides, sulfones, dimethyl sulfoxide, mineral and vegetable oils, animal oils Wait.

Surfactants can be anionic, cationic or nonionic. Surfactants can be used as emulsifiers, dispersants, or for other purposes. It is generally desirable to incorporate one or more surfactants into the herbicidal compositions of the present invention.

Emulsifiers suitable for the herbicidal composition of the present invention may be anionic and/or non-exemplary emulsifiers, such as alkylphenol polyoxyethylene ether, alkylphenol polyoxyethylene polyoxypropylene ether, benzylphenol polyoxyethylene ether, polyoxyethylene Oxyethylene fatty acid esters, polyoxyethylene fatty alcohol ethers, polyoxyethylene fatty amines, alkylphenol polyglycol ethers, etc.

The dispersant suitable for the herbicidal composition of the present invention can be alkyl naphthalene sulfonate, double (alkyl) naphthalene sulfonate formaldehyde condensate, naphthalene sulfonate formaldehyde condensate, alkylphenol polyoxyethylene phosphate, alkyl Phenol polyoxyethylene ether formaldehyde condensate sulfate, alkylphenol polyoxyethylene ether phosphate, alkylphenol polyoxyethylene ether, castor oil ethylene oxide adduct, ethylene oxide-propylene oxide block Copolymer, Alkylphenol Ethoxylate Formaldehyde Condensate, Octylphenol Ethoxylate Sulfate and Methylcellulose. For example, sodium lignosulfonate, calcium lignosulfonate, sodium methylnaphthalenesulfonate formaldehyde condensate, sodium naphthalenesulfonate formaldehyde condensate, sodium methylenenaphthalenesulfonate, etc.

Other adjuvants commonly used in agricultural compositions include solubilizers, defoamers, masking agents, neutralizers and buffers, penetration aids, adhesives, antifreeze agents, antimicrobial agents, colorants, and the like.

Among them, the antifreeze can be selected from ethylene glycol, propylene glycol, glycerol, and sorbitol. As the deflocculating agent for suspension products, auxiliary agents such as naphthalenesulfonic acid polymers and polymeric phosphates can be used.

Silicone defoamers can be used as defoamers.

Colorants that can be used, such as inorganic pigments such as iron oxide, titanium oxide and Prussian blue; and organic pigments/dyes: alizarin dyes, azo dyes and metal phthalocyanine dyes; and trace elements such as iron salts, manganese salts, Salts of boron, copper, cobalt, molybdenum and zinc.

The herbicidal composition of the present invention can be formulated in any conventional formulation form. Examples of foliar dosage forms of premix compositions are:

GR: Granules

WP: wettable powder

WG: water dispersible granules

SG: Soluble Granules

SL: soluble solution

EC: EC

EW: emulsion, emulsion in water

ME: microemulsion

SC: suspending agent

CS: microcapsule suspension

OD: oil-based suspending agent

SE: suspoemulsion

FS: seed coating agent

ULV: Ultra Low Volume Liquid

The preferred dosage form of the present invention is wettable powder, emulsifiable concentrate, suspension concentrate, microcapsule, microemulsion, water emulsion, suspoemulsion, water dispersible granule, microcapsule suspension-suspension concentrate, ultra-low volume liquid.

The above-mentioned dosage forms are conventional dosage forms in the art, and their preparation methods are well known to those skilled in the art.

Examples of dosage forms suitable for tank-mix compositions are solutions, dilute emulsions, suspensions or mixtures thereof and powders. Typically, tank mix compositions are one or more premix compositions containing different pesticides, and optionally further adjuvants, diluted with a solvent such as water.

The herbicidal compositions of the present invention can be applied in a conventional manner by using techniques well known to the skilled artisan. 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 composition can be directed with the aid of spray equipment so that they come into contact with the foliage of sensitive crops as little as possible when reaching the foliage of undesired plants growing below or the bare soil Technology.

The herbicidal compositions according to the invention are suitable for controlling/controlling undesired vegetation in useful plants (ie crops). The herbicidal compositions according to the invention are generally suitable for controlling/controlling undesired vegetation in the following crops:

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 (for example Sorghum bicolour);

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

sugar cane;

Legumes (Legumes (Fabaceae)), including for example soybeans (Glycine max.), peanuts (Arachis hypogaea) and legume crops such as peas (including Pisum sativum, pigeonpea and cowpea), kidney beans (including Broad beans (Vicia faba, Vigna and Phaseolus) and lentils (lens culinaris var.);

Brassicaceae, including, for example, canola (Brassica napus), rapeseed (Brassica napus), cabbage (B. oleracea var.), mustard greens such as mustard (B. juncea), Chinese cabbage (B. campestris), tatto (B. narinosa), black mustard (B. nigra), and Mediterranean wild turnip (B. tournefortii); and turnip (Brassica rapa 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.

In crops such as wheat, barley, rye, rice, corn, sugar cane, sorghum, bean crops, peanuts, sunflowers, sugar beet, potatoes, cotton, Brassica crops, turf, grapes, pome fruit, stone fruit, citrus, In coffee, pistachios, garden ornamentals, conifers and deciduous trees, they are effective against broadleaf, grass and sedge weeds with little or no crop damage.

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 plant Pathogenic fungi are resistant or resistant to insect attack due to genetic engineering or breeding. Suitable are, for example, saflufenacil-resistant or tolerant crop plants, preferably maize, wheat, sunflower, rice, Brassica napus, soybean, peanut, maize and sugar cane, resistant or tolerant to PPO inhibitors subject to crop plants.

The herbicidal compositions according to the invention are also suitable for defoliation and drying of plant parts, for example cotton, potato, rape, sunflower, soybean or broad bean, especially cotton crops.

The herbicidal compositions according to the invention as desiccants are particularly suitable for drying the above-ground parts of crops such as potato, rapeseed, sunflower and soybean. This enables fully mechanized harvesting of these important crops. Harvesting of citrus fruits, olives and other varieties of pome, stone fruit and nuts can be facilitated by concentrating dehiscence or reducing adhesion to the tree over a period of time. By the same mechanism, promoting defoliation between fruit or leaf parts and plant branch parts is beneficial for defoliation of useful plants, especially cotton.

The present invention also provides a method for controlling undesired plants, which comprises applying said herbicidal composition to the locus or leaves or stems of the undesired plants. The undesired plants are grasses, broadleaf weeds and sedges.

The herbicidal compositions according to the invention are also suitable for controlling a large number of dicotyledonous weeds, especially broad-leaved weeds, including species of the genus Polygonum such as Polygonum convolvolus, species of the genus Amaranthus such as purslane (Amaranthus retroflexus), Chenopodium spp. Species such as common quinoa (Chenopodium album L.), Sida species such as Sida spinosa L., Ambrosia species such as Ambrosia artemisiifolia, Acanthospermum species, Chamomile ( Anthemis species, Atriplex species, Cirsium species, Convolvulus species, Conyza species, Cassia species, Commelina species Species, Datura species, Euphorbia species, Geranium species, Galinsoga species, morning glory (Ipomoea species), wild Lamium species, Malva species, Matricaria species, Sysimbrium species, Solanum species, Xanthium species, Possum species, Viola Species of the genus Viola, common chickweed (Stellaria media), velvetleaf (Abutilon theophrasti), hemp sesbania (Sesbania exaltata Cory), Anoda cristata, Bidens pilosa, Brassica kaber, Capsella bursa-pastoris, Centaurea cyanus, Galeopsis tetrahit), scorpion, sunflower (Helianthus annuus), money grass (Desmodium tortuosum), broom (Kochia scoparia), mountain tree blue (Mercurialis annua), forget-me-not (Myosotis arvensis), poppy (Papaver rhhoeas), wild radish ( Raphanus raphanistrum), Salsola kali, Sinapis arvensis, Sonchus arvensis, Thlaspi arvense, Tagetes minuta, Richardia brasiliensis, etc.

The herbicidal composition of the present invention is also suitable for controlling a large number of annual and perennial Cyperaceae weeds, including cyperus species such as Cyperus rotundus L., Cyperus esculentus L., cyperus (Cyperus brevifolius H.), Cyperus microiria Steud (Cyperus microiria Steud), Broken rice sedge (Cyperusiria L.), etc.

The herbicidal composition of the present invention is also suitable for controlling a large number of monocotyledonous weeds, especially annual grass weeds (grasses), such as Leptochloa (Leptochloa), candle grass · Timothy (Phleum), hard bluegrass · bluegrass ( Poa), Festuca, Festuca, Setaria, Eleusine, Sagittaria, Agropyron, Ischaemum ), broken rice sedge with awns, papyrus, brevifolia, Cyperus, wild oats, oats (Avena), brome thinner, bromus flat spikes (Bromus), millet (Panicum), Cynodon, Monochoria, Alopecurus, Paspalum, Commelina, Fimbristylis, Lolium, Brachiaria Brachiaria, Agrostis, Eleocharis, Echinochloa, Scirpus, Digitaria, Sorghum )Wait.

As a monocotyledonous weed, there is also Amaranthus retroflexus), Amaranthus viridis, Setaria faberi, Leptochloa chinensis, Lindernia angustifolia, Lindernia procumbens, Ipomoea hederacea, Motherwort (Lindernia dubia), Sida spinosa, Polygonum pensylvanicum, Sesbania exaltata, Geranium carolinense, Conyza bonariensis, Powell amaranth (Amaranthus powellii), Polygonum cuspidatum, Abutilon theophrasti, Matricaria perforata, Polygonum longisetum, Echinochloa crus-galli, Amaranthus lividus, Nightshade (Solanum nigrum), Bromus tectorum, Sagittaria pygmaea Miq, Rumex obtusifolius, Setaria viridis, Cassia obtusifolia, Sumerian wineweed ( Conyza sumatrensis), Veronica persica, Xanthium canadens, Panicum dichotomiflorum, Asclepias syriaca, Euphorbia maculata, Plantago asiatica ), Palmer amaranth (Amaranthus palmeri), Cocklebur (Xanthium strumarium), Wild Oat (Avena sterilis), Goosegrass (Eleusine indica), Sagittaria trifolia, Erodium cicutarium, Cerastium glomeratum, Matricaria matricarioides, Chamomile ( Matricaria chamomilla), narrow-leaved vetch (Vicia angustifolia), rye-like brome (Bromus secalinus), wild oats (Avena fatua), knotweed (Rotala indica), sheep's foot (Rumex japonicus), oil sedge (Cyperus esculentus ), golden foxtail (Setaria glauca), kudzu vine (Pueraria lobata), water chestnut (Eleocharis kuroguwai Ohwi), three-leaved ragweed (Ambrosia trifida), chrysanthemum chrysanthemum (Chrysanthemum segetum), crushed rice sedge (Cyperus iria), duck tongue Grass (Monochoria vaginalis), Mansgrass (Echinochloa colona), Alisma plantago-aquatica, Rice (Oryza sativa), Polygonum lapathifolium, Agropyron repens, Sorghum vulgare, Apera spica-venti, Chenopodium album, Trifolium repens, Datura stramonium, Equisetum arvense, Poa annua, Brome (Bromus japonicus), Alopecurus aequalis, Portulaca oleracea, Solidago altissima, Sorghum halepense, Brassica juncea, Taraxacum officinale, Arrowhead Convolvulus arvensis, Oenanthe javanica, Polygonum convolvulus, Echinochloa oryzicola Vasing, Ischaemum rugosum, Veronica arvensis Grass (Cyperus difformis L.), Western Amaranthus (Amaranthus rudis), Lilac Polygonum (Ludwigia prostrata Roxburgh), Duck Commelina communis, Panicum texanum, Euphorbia helioscopia, Rumex crispus, Capsella bursa-pastoris, Euphorbia pseudochamaesyce, Brachiaria plantaginea), Lolium multiflorum, Alopecurus myosuroides, Sinapis arvensis, Galinsoga ciliata, Chickweed (Stellaria media), Cyperus rotundus , Amaranthus spinosus, Polygonum persicaria, Papaver rhhoeas, Helianthus annuus, Lamium purpureum, Kyllinga gracillima, Amaranthus multiflora ( Ammannia multiflora), Conyza canadensis, Potamogeton distinctus A.Benn, Amaranthus tuberculatus, Viola arvensis, Ambrosia artemisiifolia, Potamogeton ivy (Veronica hederaefolia), Alopecurus myosuroides), Desmodium tortuosum, Plantago lanceolata, Alisma canaliculatum A.Br.et Bouche), Kochia scoparia, Lolium rigidum, Ammannia coccinea, Lolium perenne, Scirpus juncoides Roxburgh, Lamium amplexicaule, Amaranthus hybridus (Amaranthus hybridus), Cow felt (Eleocharis acularis L.), White star potato (Ipomoea lacunosa), Morning glory (Ipomoea purpurea), Buckthorn (Ipomoea hederacea var integriuscula), Commelina bengharensis), Yujiuhua (Monochoria korsakowii), Cyperus serotinus, Elatine triandra, Digitaria ciliaris, Digitaria sanguinalis, Sorghum bicolor, Galium aparine , Artemisia princeps, Viola tricolor, Raphanus raphanistrum, Myosotis arvensis, etc.

The present invention also provides a method of controlling unwanted vegetation comprising: (i) before germination of unwanted plants (pre-emergence); (ii) After germination of unwanted plants (post-emergence), Or (iii) in (i) and (ii), applying a herbicidally effective amount of said herbicidal composition to the locus or leaves or stems of the undesired plants.

The herbicidal compositions according to the invention can be applied pre- or post-emergence, ie before, during and/or after emergence of unwanted plants. When the herbicidal compositions of the present invention are used in crops, they can be applied after sowing and before or after emergence of crops. The herbicidal composition of the present invention can also be applied before sowing of crops.

When the herbicidal composition of the present invention is applied before germination of undesired plants, emergence of undesired plants can be completely prevented or undesired plants can grow to the cotyledon stage and then stop growing and completely die after 3-4 weeks.

When the herbicidal compositions according to the invention are applied to the green parts of plants after emergence of the undesired vegetation, the growth of the undesired vegetation is likewise quickly and effectively prevented after treatment. The undesired plants remain in the vegetative phase present at the time of use and die off more or less rapidly one after the other after a while, so that the application of the herbicidal compositions according to the invention in this way provides rapid and permanent protection against undesired plants which are harmful to crops competition while reducing crop quantity and quality losses.

When the herbicidal composition of the present invention is used for non-arable land treatment, the herbicidal composition of the present invention is applied to the stems and leaves of weeds, or the cultivation medium in which the weeds live.

A method for controlling undesired plants by applying the active ingredients saflufenacil and bromoxynil and derivatives thereof jointly or individually to the growth site or leaves or stems of the undesired plants. The herbicidal composition of the present invention contains effective doses of active ingredients saflufenacil and bromoxynil and derivatives thereof, which have a synergistic effect. A synergistic effect was observed when the active ingredients saflufenacil and bromoxynil and their derivatives were administered together or almost simultaneously; when saflufenacil and bromoxynil and their derivatives were administered at different times, A synergistic effect can also be observed; saflufenacil and bromoxynil and its derivatives can also be applied sequentially, for example pre-emergence and then post-emergence, or early post-emergence followed by mid- or late post-emergence. Preference is given here to the simultaneous or almost simultaneous application of the active ingredients saflufenacil and bromoxynil and derivatives thereof, and particular preference to joint application.

The term herbicide means an active ingredient which kills, controls or adversely alters the growth of plants.

Undesirable plants refer to broadleaf weeds, grass weeds, sedge weeds which are not desired to grow in crops.

Embodiment 1: wettable powder

Saflufenacil 10% Bromoxynil 50% Sodium butyl naphthalene sulfonate 3% Sodium methylene dinaphthalene sulfonate 3% Silica 20% Kaolin margin

The above formula is coarsely pulverized in proportion, put into a mixer and mixed evenly, and then jet pulverized to obtain the wettable powder of the herbicidal composition.

Embodiment 2: suspoemulsion

Saflufenacil 5% Bromoxynil 30% Ethoxylated castor oil 5% N-Methylpyrrolidone 5% Sodium p-methoxy fatty amidobenzenesulfonate 8% Alkylphenol polyoxyethylene ether formaldehyde condensate sulfate 4% Magnesium Aluminum Silicate 1% Bentonite 1% Silicone 0.1% Glycerol 5% ionized water margin

Bromoxynil octanoyl was dissolved in N-methylpyrrolidone, and sodium p-methoxy fatty amidobenzenesulfonate was added to obtain an oil phase; saflufenacil, p-methoxy fatty amidobenzenesulfonic acid Sodium, alkylphenol polyoxyethylene ether formaldehyde condensate sulfate, and water are ground and/or high-speed sheared to obtain a saflufenacil water suspension; add the oil phase to the water phase under stirring to obtain a suspoemulsion.

Embodiment 3: water dispersible granules

Saflufenacil 40% Bromoxynil 40% Sodium dodecyl sulfate 3% polycarboxylate 3% ammonium sulfate 4% polyethylene glycol 2% Kaolin margin

Dry crushing, granulation, drying and sieving of the above formula in proportion to prepare water-dispersible granules of the herbicidal composition.

Example 4 EC

Saflufenacil 5% Bromoxynil 5% Castor oil polyoxyethylene ether 5% Sodium dodecyl benzene sulfonate 5% N-Methylpyrrolidone margin

Dissolve the original drug, solvent and emulsifier in the above formula into a uniform and transparent phase.

Embodiment 5: suspending agent

Saflufenacil 2% Bromoxynil 3% Disodium Fatty Alcohol Polyoxyethylene Ether Sulfosuccinate Monoester 3% Fatty alcohol polyoxyethylene ether 3% Sodium lignosulfonate 3% Bentonite 1% Defoamer 0.1% water margin

The above-mentioned components are put into a sand mill for grinding in proportion, and then transferred to a homogeneous mixer for mixing to obtain a herbicidal composition suspension.

Embodiment 6: microemulsion

Saflufenacil 5% Bromoxynil 25% N-Methylpyrrolidone 40% Styrene phenol formaldehyde resin polyoxyethylene ether phosphate 10% Calcium dodecylbenzenesulfonate 10% Deionized water margin

Mix the above-mentioned original drug, solvent, and emulsifier in proportion to make it dissolve into a uniform oil phase; mix the water-soluble components with deionized water to obtain a water phase; mix the oil phase with the water phase under stirring to obtain micro emulsion.

Embodiment 7: wettable powder

Saflufenacil 25% bromoxynil 15% Sodium lignosulfonate 5% Sodium methylene dinaphthalene sulfonate 5% Silica 10% Kaolin margin

The above formula is coarsely pulverized in proportion, put into a mixer and mixed evenly, and then jet pulverized to obtain the wettable powder of the herbicidal composition.

Example 8 Microcapsule Suspension - Suspension Concentrate

Synperonic PE/64 0.2% citric acid 0.05% catalyst 0.1% water 13% Saflufenacil 30% PAPI ^™ 1.35% SOLVESSO ^™ 200 10% Synperonic ^™ PE/64 5% Sodium Lignin Sulfate 0.3% Defoamer 0.16% urea 8.4% Bromoxynil 10% water Top up to 100%

Add the oil phase formed by PAPI ^TM , octanoyl bromoxynil and SOLVESSO ^TM 200 into the aqueous solution containing Synperonic ^TM PE/64 to form an emulsion; then heat and keep warm at 50 ^o C and add the catalyst to react for 2 hours. After cooling, microcapsules of octanoyl bromoxynil were obtained.

Synperonic ^TM PE/64, dispersant sodium lignosulfate, antifoaming agent, urea, saflufenacil and water are mixed in proportion, after grinding and/or high-speed shearing to obtain a suspension concentrate.

Add the obtained microcapsules of bromoxynil octanoyl into saflufenacil suspension concentrate, and stir evenly to obtain 30% saflufenacil + 10% bromoxynil octanoyl microcapsule suspension-suspension concentrate.

Example 9 EC

Saflufenacil 5% Bromoxynil 20% Ethoxylated castor oil 5% Calcium dodecylbenzenesulfonate 3% SOLVESSO ^™ 100 margin

The above components were mixed and stirred until a clear homogeneous phase was obtained.

Example 10 50% saflufenacil+40% bromoxynil water dispersible granules

Saflufenacil 50% Bromoxynil 40% Modified Calcium Lignosulfonate 1% Sodium dodecyl sulfate 1% Sodium chloride 1% Kaolin margin

Mix saflufenacil, bromoxynil active ingredient, dispersant, wetting agent, disintegrating agent and filler uniformly according to the ratio of the formula, and then crush it into a wettable powder by airflow; then add a certain amount of water and mix and extrude to make material. Obtain 50% saflufenacil+40% bromoxynil water-dispersible granules after drying and sieving.

Example 11 40% saflufenacil + 60% bromoxynil octanoyl

Saflufenacil 40% Bromoxynil 60%

Mix saflufenacil and bromoxynil octanoyl evenly in proportion.

Example 12 10% saflufenacil + 90% bromoxynil

Saflufenacil 10% Bromoxynil 90%

Mix saflufenacil and bromoxynil octanoyl evenly in proportion.

Above embodiment proportioning is weight percentage proportioning.

biological example

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

The calculation formula is shown in the following formula (1):

……………………………………(1)

In the formula (1), X represents the weed control (%) of the herbicide A at the dosage of Xg active ingredient/ha,

Y represents the weed control (%) of herbicide B under the dosage of Yg active ingredient/ha,

E ₀ represents the expected weed control (%) at the rate of X+Yg active ingredient/ha.

If the actual weed control rate 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 each component, which means that the composition is synergistic effect.

Pre-emergence test:

Seeds or rhizome pieces of monocotyledonous and dicotyledonous weed plants are placed in pots filled with sandy clay and covered with soil under greenhouse conditions. Use standard soil as the cultivation substrate. At the pre-emergence stage, the herbicides are applied to the soil surface alone or in admixture. After treatment, the pots were placed in a greenhouse and kept under good growing conditions for weeds. Visual assessment of plant damage after a test period of 3-4 weeks or emergence damage after emergence of test plants compared to untreated controls. As shown by the test results, the herbicidal composition of the present invention has very good pre-emergence herbicidal activity against broad-spectrum weeds. The values observed in the test show that, at an appropriate low dosage, the effect of the herbicidal composition of the present invention exceeds the expected value according to Colby, showing a clear synergistic effect.

Post-emergence test

A synergistic effect exists whenever the effect of the combination of saflufenacil and bromoxynil and its derivatives is greater than the sum of the effects of the individual active ingredients when applied separately.

Potted stem and leaf treatment method (NY/T 1155.4-2006): Put a certain amount of soil in a plastic pot with a height of 6 cm and a diameter of 9 cm, sow 15 to 20 seeds of monocotyledonous and dicotyledonous weeds in the plastic pot, cover with 0.5 to 1 cm thick fine soil, and place Cultivate in the greenhouse, spray the stems and leaves when the weeds grow to the 2-4 leaf stage, spray 1mL of the liquid in each bowl, repeat 4 times for each treatment, and set the treatment without the medicine as the control. After treatment, they were cultured in the greenhouse, and the growth of the target weeds was observed regularly. After 21 days, the symptoms of the target weeds and the growth inhibition were visually observed, and the fresh weight of the aboveground part or the fresh weight of the plants was weighed. Toxic effects of grass.

Prepare three kinds of reagents according to a certain weight percentage: 1. saflufenacil; 2. bromoxynil; 3. saflufenacil+bromoxynil; saflufenacil+octanoyl bromoxynil. Afterwards, each of the above reagents is diluted with water to obtain a drug dilution.

investigation method:

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

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

In the formula, X is the fresh weight inhibition rate of saflufenacil to the target weeds when a certain dosage is used alone;

Y is the fresh weight inhibitory rate of bromoxynil or octanoyl bromoxynil to target weeds when a certain dose is used alone;

E ₀ is the theoretical value of the inhibition rate of fresh weight of target weeds when saflufenacil is mixed with bromoxynil or bromoxynil octanoyl;

E is the measured value of the fresh weight inhibition rate of the target weeds when saflufenacil was mixed with bromoxynil or bromoxynil octanoyl.

If the actual weed control rate 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 each component, which means that the composition is synergistic effect.

Table 1: Post-emergence herbicidal effect of compositions of the invention containing saflufenacil and bromoxynil at 21 days after application:

It can be seen from the above table that the herbicidal composition of the present invention, saflumezone and bromoxynil in the range of 1:1-1:50, shows obvious synergistic effect.

Table 2: Post-emergence herbicidal effect of the composition of the present invention containing saflufenacil and bromoxynil octanoyl at 21 days after application:

It can be seen from the above table that the herbicidal composition of the present invention, saflumezone and bromoxynil in the range of 1:1-1:50, shows obvious synergistic effect.

Claims (14)

1. a Herbicidal combinations, it is characterised in that it is characterized in that, containing active component benzene flumetsulam and Brominal and derivant thereof, described benzene flumetsulam is 1:1 to 1:50 with the weight ratio of Brominal and derivant thereof.

Herbicidal combinations the most according to claim 1, it is characterised in that described benzene flumetsulam is 1:1 to 1:25 with the weight ratio of Brominal and derivant thereof.

Herbicidal combinations the most according to claim 1, it is characterised in that described benzene flumetsulam is 1:1 to 1:10 with the weight ratio of Brominal and derivant thereof.

Herbicidal combinations the most according to claim 1, it is characterised in that described benzene flumetsulam is 1:1 to 1:5 with the weight ratio of Brominal and derivant thereof.

Herbicidal combinations the most according to claim 1, it is characterised in that described Brominal and derivant thereof are Brominal, bromoxynil octanoate, heptanoyl bromide cyanophenyl, Brominal sodium salt, Brominal potassium salt.

6. a Herbicidal combinations, it is characterised in that described compositions comprises the active component described in claim 1, auxiliary agent and/or filler.

Herbicidal combinations the most according to claim 6, it is characterised in that the content of described active component benzene flumetsulam and Brominal and derivant thereof accounts for the 5%-90% of described Herbicidal combinations.

Herbicidal combinations the most according to claim 6, it is characterised in that the content of described active component benzene flumetsulam and Brominal and derivant thereof accounts for the 10%-80% of described Herbicidal combinations.

Herbicidal combinations the most according to claim 6, it is characterised in that the content of described active component benzene flumetsulam and Brominal and derivant thereof accounts for the 20%-70% of described Herbicidal combinations.

Herbicidal combinations the most according to claim 6, it is characterised in that the content of described active component benzene flumetsulam and Brominal and derivant thereof accounts for the 30%-60% of described Herbicidal combinations.

Herbicidal combinations described in 11. claim 1, it is characterised in that dosage form is wettable powder, cream, suspending agent, microcapsule, microemulsion, aqueous emulsion, suspended emulsion, water dispersible granules, microcapsule suspension-suspendinagent agent or ultra low volume liquids.

Herbicidal combinations described in 12. claim 1 is preventing and kill off broad-leaved section weeds, sedge weed, the application of the undesirable plant of grassy weed.

13. 1 kinds of methods controlling undesirable plant, it is characterised in that including: (i) Before undesirable plant germination (before bud)；(ii) after undesirable plant germination (after bud), Or (iii) (i) and (ii) time, the Herbicidal combinations described in the claim 1 of herbicidally effective amount is applied on the growth place of undesirable plant or leaf or stem.

14. 1 kinds of methods preventing and treating undesirable plants, it is characterised in that the active component benzene flumetsulam of the Herbicidal combinations described in claim 1 and Brominal and derivant thereof collectively or individually are applied on the growth place of undesirable plant or leaf or stem.