WO2014001357A1 - Herbicidal agents containing flufenacet - Google Patents

Abstract

The invention relates to herbicidal agents comprising an effective amount of flufenacet and the further herbicide aclonifen. Said herbicidal agents have an improved range of application.

Description

 Description Herbicidal agent containing flufenacet

The invention is in the technical field of pesticides which are useful against harmful plants e.g. can be used in crops and contain as active ingredients in the herbicidal compositions a combination of Flufenacet and another herbicide.

The herbicidal active ingredient Flufenacet (manufacturer: Bayer CropScience) belongs to the group of heteroaryloxy-acetamides and mixtures of this group with other herbicides are known from the literature: for example (for example) US 5945397 B, US 5593942 B, US 581 1373 B, US 6967188 B. In US 5858920 B among others

 Heteroaryloxy-acetamides in admixture with single agents, e.g. the herbicide Aclonifen, but without experimental data for the

synergistic effect. The herbicidal active ingredient flufenacet is characterized by a broad activity against monocotyledonous and dicotyledonous harmful plants and is used e.g. used in pre-sowing, pre-emergence or postemergence agriculture in sown and / or planted agricultural or horticultural crops and non-crops (eg in cereals such as wheat, barley, rye, oats, triticale, rice, corn, millet, sugar beet, sugarcane, Oilseed rape, cotton, sunflower, soya, potato, tomatoes, beans, flax, pasture grass, fruit growing plants, plantation crops, green areas and lawns, as well as residential and industrial sites, railway tracks).

As an individual active ingredient, Flufenacet is commercially available, for example, under the trade names Cadou®, Drago®, Define® and Tiara®. In addition to using the

 Single agents are also known from mixtures of flufenacet with other herbicides (for example US 5985797 B, US 5912206 B, US 6492301 B, US 6864217 B, US 6486096 B, US 2003/0069138 A, WO 2002/058472 A, US 6365550 B, US Pat.

US 2003/0060367 A, US 6878675 B, US 6071858 B, WO 2007/112834 A) and in Trade: Mixture with metribuzin (eg Axiom®, Bastille®, Artist®, Domain®,

Plateen®, Fedor®, Draeda®), with isoxaflutole (eg Epic®, Cadou Star®), with metosulam (eg Diplome®, Terano®), with diflufenican (eg Herold®, Liberator®), with 2,4-D (eg Drago 3.4®), with atrazine (eg Aspect®), with pendimethalin (eg

Crystal®, Malibu Pack®), with atrazine and metribuzin (e.g., Axiom AT®) and with diflufenican and flurtamones (e.g., Baccara FORTE®).

Despite the good effect of Flufenacet as a single active ingredient and in the already known mixtures there is still a need to improve the application profile of this active ingredient in specific applications. The reasons for this are manifold, such as further increase the effectiveness in special

Areas of application, increasing crop plant tolerance, reaction to new production techniques in individual crops and / or the increasing occurrence of herbicide-resistant harmful plants (eg in cereals, rice and corn but also in potatoes, sunflowers, peas, carrots and fennel) with, for example, 'target -Site Resistance '(Abbreviation: TSR;

Weed populations contain biotypes with a site-specific resistance, i. by natural mutations in the gene sequence, the binding site changes at the site of action, so that the drugs no longer or insufficiently bind and act accordingly) and 'Enhanced Metabolism Resistance' (abbreviation: EMR: where the weed populations contain biotypes with a metabolic resistance, ie the plants possess the ability of enzyme complexes

The active ingredients are metabolized faster in the plant. According to the 'Herbicide Resistance Action Committee'

(Abbreviation: HRAC, a working group of the research industry)

Resistances for approved drugs classified according to their mode of action (MoA): eg HRAC group A = acetylcoenzyme A-carboxylase inhibitors (MoA: ACCase) or HRAC group B = acetolactate synthase inhibitors (MoA: ALS). These enhancements to the application profile can be significant both individually and in combination. One way to improve the application profile of a herbicide may be to combine the active ingredient with one or more other suitable agents. However, phenomena of physical and biological phenomena often occur in the combined use of several active substances

Incompatibility, e.g. lack of stability in a coformulation, decomposition of an active substance or antagonism of the active ingredients. On the other hand, combinations of active substances having a favorable action profile, high stability and, if possible, synergistically enhanced action, which are associated with a reduction in the active ingredient, are desirable

Application rate compared to the single application of the active ingredients to be combined allowed. Also desirable are combinations of drugs that the

Increase crop plant tolerance in general and / or special

Production techniques can be used. This includes, for example, a reduction in the sowing depth, which can often not be used for reasons of cultural compatibility. This generally achieves a faster casserole of the crop, reduces its risk of casserole diseases (such as Pythium and Rhizoctonia), improves overwintering ability and the degree of tillering. This also applies to late-seed, which would otherwise not be possible due to the risk of cultural compatibility. The object of the present invention was to improve the

Application profile of the herbicidal active ingredient Flufenacet with regard to:

 a simplified application method, which reduces the costs for the

 Reduce users and thus would have a gentler impact on the environment.

 - An improvement in the application flexibility of the active ingredients from Voraufiauf to postemergence of the crop and weed plants.

 an improvement and application flexibility of the effect safety on soils with different soil properties (e.g.

 Soil moisture).

- an improvement of the efficacy of resistant weed species, which would allow a new possibility for an effective resistance management; the last mentioned task was in the foreground.

This object has been achieved by providing herbicidal compositions containing flufenacet and the further herbicide aclonifen.

An object of the invention are thus herbicidal compositions containing as the only herbicidally active ingredients:

 A) flufenacet (component A),

 B) Aclonifen (component B).

The active ingredients mentioned in this description with their "common name"

(herbicidally active ingredients) are, for example, from "The Pesticide Manual", 14th Edition 2006/2007, or in the corresponding "The e-Pesticide Manual", Version 4.0 (2006-07), each published by the British Crop Protection Council and the Royal Soc. of Chemistry, and known from "The Compendium of Pesticide Common Names" on the Internet (http://www.alanwood.net/pesticides/).

The herbicidally active components component A and B are hereinafter referred to collectively as "(single) agents", "(single) herbicides" or as "herbicidal components" and are used as individual substances or as a mixture e.g. known from "The Pesticide Manual", 14th edition (s.o.) and have the following

Registration numbers (abbreviation: "PM # .." with the current one

Entry number / "sequential entry number"): - Component A: Flufenacet (PM # 381), syn. thiafluamide, e.g. N- (4-fluorophenyl) -N- (1-methylethyl) -2 - [[5- (trifluoromethyl) -1, 3,4-thiadiazol-2-yl] oxy] acetamide;

 Component B: Aclonifen (PM # 9), e.g. 2-chloro-6-nitro-3-phenoxybenzenamine.

If the short form of the "common name" of an active ingredient is used in the context of this description, then - if applicable - are all common Derivatives, such as the esters and salts, and isomers, in particular optical isomers, in particular the commercial form or forms. Will with the

"Common name" denotes an ester or salt, so are all other common derivatives such as other esters and salts, the free acids and neutral compounds, and isomers, in particular optical isomers, in particular the commercial form or forms. The chemical link names given refer to at least one of the "common name" compounds, often a preferred compound. As far as the abbreviation "AS / ha" is used in this description, this means "active substance per hectare", based on 100% active ingredient. All percentages in the description are percentages by weight (abbreviation: "% by weight") and, unless otherwise defined, relate to the relative weight of the respective ones

Component based on the total weight of the herbicidal agent (e.g., as a formulation).

The herbicidal compositions according to the invention have a herbicidally active content of the components A and B and may contain further constituents, e.g. agrochemical active substances from the group of insecticides, fungicides and safeners and / or additives and / or formulation auxiliaries customary in crop protection, or used together with these.

In a preferred embodiment, the herbicidal compositions according to the invention have synergistic effects as an improvement of the application profile. These synergistic effects can e.g. co-application of the herbicidal components, but they can often be detected even in case of splitting. It is also possible

Application of the individual herbicides or herbicide combinations in multiple portions (sequence application), eg pre-emergence applications, followed by postemergence applications or early postemergence applications, followed by mid-late post-emergence applications. Preferred is the common or timely application of the active ingredients of the invention

Herbicidal agents.

The synergistic effects allow a reduction in the application rates of the individual active ingredients, a higher potency at the same rate, the control of previously unrecognized species (gaps), an extension of the

Period of application and / or a reduction in the number of necessary

Individual applications and - as a result for the user - economically and ecologically more advantageous weed control systems.

The application rate of the herbicidal components and their derivatives in the herbicidal composition can vary within wide limits. In applications with application rates of 15 to 7000 g AS / ha of herbicide components is in the pre and

Postemergence control a relatively wide range of annual and perennial weeds, grass weeds and Cyperaceae.

The application rates of the herbicidal components are in the herbicidal composition in the following weight ratio to each other:

 (Area component A): (area component B)

 in general (2 - 400): (1 - 100),

 preferably (1-10): (1-25),

 particularly preferred (1-5): (1-10).

The application rates of the respective herbicidal components in the herbicidal composition are: Component A: in general 5-2000 g AS / ha, preferably 30-400 g

 AS / ha, more preferably 50-300 g AS / ha flufenacet;

 Component B: generally 10 to 5000 g AS / ha, preferably 80 to 3000 g AS / ha, more preferably 80 to 1000 g AS / ha aclonifen. Accordingly, from the above-mentioned application rates

Percent by weight (% by weight) of the herbicidal components based on the Total weight of herbicide center! calculated, which may also contain other ingredients.

The herbicidal compositions of the present invention have excellent herbicidal activity against a broad spectrum of economically important monocotyledonous and dicotyledonous weeds, such as weeds, grass weeds or cyperaceans, including species resistant to herbicidal active compounds, e.g. Glyphosate, glufosinate, atrazine, photosynthesis inhibitors, imidazolinone herbicides, sulfonylureas, (hetero) aryloxy-aryloxyalkylcarboxylic acids or -phenoxyalkylcarboxylic acids (so-called 'fops'), cyclohexanedione oximes (so-called 'dims') or auxin inhibitors. Hard-to-control perennial weeds that sprout out of rhizomes, rhizomes or other endemic organs are also well recognized by the active ingredients. The substances may be e.g. be applied in pre-sowing, pre-emergence or post-emergence, e.g. together or separately.

In particular, some representatives of mono- and dicots are

Called weed flora, which can be controlled by the herbicidal compositions according to the invention, without being limited by naming a restriction to certain species.

On the side of the monocotyledonous weeds, e.g. Ave na spp., Alopecurus spp., Apera spp., Brachiaria spp., Bromus spp., Digitaria spp., Lolium spp.,

Echinochloa spp., Leptochloa spp., Fimbristylis spp., Panicum spp., Phalaris spp., Poa spp., Setaria spp. and Cyperus species from the annuelle group and on the part of the perennial species Agropyron, Cynodon, Imperata and Sorghum and also perennial Cyperusarten well.

In dicotyledonous weed species, the spectrum of activity extends to species such as e.g. Abutilon spp., Amaranthus spp., Chenopodium spp., Chrysanthemum spp., Galium spp., Ipomoea spp., Kochia spp., Lamium spp., Matricaria spp., Pharitis spp.,

Polygonum spp., Sida spp., Sinapis spp., Solanum spp., Stellaria spp., Veronica spp. Eclipta spp., Sesbania spp., Aeschynomene spp. and Viola spp., Xanthium spp., on the annuel! page as well as Convolvulus, Cirsium, Rumex and Artemisia in perennial weeds.

Are the herbicidal compositions of the invention before germination on the

Applied to the earth's surface, either the emergence of the weed seedlings is completely prevented or the weeds grow up to the cotyledon stage, but then cease their growth and finally die completely after two to four weeks. When applying the herbicidal compositions of the invention to the green

 Plant parts postemergence also occurs very quickly after treatment, a drastic halt in growth and the weed plants remain in the stage of growth existing at the time of application or die after a certain time completely off, so that eliminated in this way harmful to crops weed competition very early and sustainable becomes. The

herbicidal compositions according to the invention can also be applied in rice in the water and are then taken up via soil, shoot and root.

The herbicidal compositions according to the invention are distinguished by a rapidly onset and long-lasting herbicidal action. The rainfastness of the active ingredients in the compositions according to the invention is generally favorable. A particular advantage is the fact that the effective and used in the compositions of the invention dosages of components A and B can be set so low that their soil effect is optimally low. Thus, their use is not only possible in sensitive cultures, but groundwater contamination is also virtually avoided. The combination of active substances according to the invention enables a considerable reduction in the required application rate of the active substances.

In the joint application of components A and B in the

agents according to the invention occur in a preferred embodiment as an improvement of the application profile superadditive (= synergistic) effects. It is the Effect in the combinations stronger than the expected sum of the effects of the individual herbicides used. The synergistic effects allow a higher and / or longer potency (lasting effect); the control of a broader spectrum of weeds, grass weeds and cyperaceans, sometimes with only one or a few applications; faster onset of herbicidal activity; Control of previously unrecognized species (gaps); Control, for example, of species that have tolerances or resistances to single or multiple herbicides;

Extension of the period of application and / or a reduction in the number of necessary individual applications or a reduction in the total amount applied and - as a result for the user - economically and ecologically more advantageous weed control systems.

The mentioned properties and advantages are in the practical

To control weed control in order to keep agricultural / forestry / horticultural crops, grassland / pastures or crops for energy production (biogas, bio-ethanol) free of undesired competing plants and thus to secure and / or increase yields qualitatively and quantitatively. The technical standard is due to these new combinations in the

herbicidal compositions according to the invention are significantly exceeded in terms of the properties described.

Although the herbicidal compositions according to the invention have excellent herbicidal activity against monocotyledonous and dicotyledonous harmful plants, the crop plants are damaged only insignificantly or not at all.

In addition, the agents according to the invention can be partially

have growth-regulatory properties in crops. They regulate the plant's metabolism and can thus be used to specifically influence plant constituents and facilitate harvesting, such as be used by triggering desiccation and stunted growth.

Furthermore, they are also suitable for the general control and inhibition of unwanted vegetative growth, without killing the plants. A Inhibition of vegetative growth plays in many mono- and dicots

Crops play an important role, as crop losses during storage can be reduced or completely prevented. Due to their improved application profile, the compositions of the invention can also be used to control harmful plants in known crops or to be developed tolerant or genetically engineered culture and

Energy crops are used. The transgenic plants (GMOs) are usually characterized by particular advantageous properties, for example, by resistance to certain pesticides, especially certain herbicides (such as resistance to components A and B in the

inventive means), for example by resistances

Harmful insects, plant diseases or pathogens of plant diseases such as certain microorganisms such as fungi, bacteria or viruses. Other special properties concern e.g. the crop in terms of quantity, quality,

 Shelf life, as well as the composition of special ingredients. Thus, transgenic plants with increased starch content or altered quality of the starch or those with other fatty acid composition of the crop or increased vitamin content or energy properties are known. More special

Properties may be in tolerance or resistance to abiotic stressors, e.g. Heat, cold, drought, salt and ultraviolet radiation are present.

Likewise, because of their herbicidal and other properties, the agents according to the invention can also be used for combating harmful plants in cultures of known or yet to be developed by mutant selection

Plants are used, and from crosses of mutagenic and transgenic plants.

Conventional ways of producing new plants that have modified properties compared to previously occurring plants exist

for example, in classical breeding methods and the generation of mutants. Alternatively, new plants with altered properties can help

Genetic engineering methods are produced (see for example EP 0221044 A, EP 0131624 A). In several cases, for example, genetic engineering was described

Changes in crops to modify the starch synthesized in the plants (e.g., WO 92/01 1376 A, WO 92/014827 A, WO 91/019806 A); transgenic crops which are resistant to certain glufosinate-type herbicides (cf., for example, EP 0242236 A, EP 0242246 A) or glyphosate (WO 92/000377 A) or the sulfonylureas (EP 0257993 A, US Pat. No. 5,013,659) or to combinations or mixtures of these herbicides "Gene stacking" are resistant, such as transgenic crops such as corn or soybean with the trade name or the name Optimum ™ GAT ™ (Glyphosate ALS Tolerant); transgenic

Crops, for example cotton, capable of producing Bacillus thuringiensis toxins (Bt toxins) that target the plants

Make pests resistant (EP 0142924 A, EP 0193259 A); transgenic

Crop plants with modified fatty acid composition (WO 91/013972 A); genetically engineered crops with new content or secondary substances, e.g. new phytoalexins which cause increased disease resistance (EP 0309862 A, EP 0464461 A); genetically modified plants with reduced photorespiration, which have higher yields and higher stress tolerance (EP 0305398 A); Transgenic crops that produce pharmaceutically or diagnostically important proteins ("molecular pharming"); transgenic crops that are characterized by higher yields or better quality; transgenic

 Crop plants which are characterized by a combination e.g. the o.g. characterize new properties ("gene stacking").

Numerous molecular biology techniques that can be used to produce novel transgenic plants with altered properties are known in principle; see, e.g. I. Potrykus and G. Spangenberg (eds.) Gene Transfer to Plants, Springer Lab Manual (1995), Springer Verlag Berlin, Heidelberg, or Christou, "Trends in Plant Science" 1 (1996) 423-431). For such genetic manipulations, nucleic acid molecules can be introduced into plasmids containing a

Mutagenesis or a sequence change by recombination of DNA sequences allow. By means of standard methods, e.g.

Base exchanges made, partial sequences removed or natural or synthetic sequences are added. For the connection of the DNA fragments with one another adapters or linkers can be attached to the fragments, see eg Sambrook et al., 1989, Mo! Ecuiar Cloning, A

Laboratory Manual, 2nd Ed. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY; or Winnacker "Genes and Clones", VCH Weinheim 2nd edition 1996.

The production of plant cells with a reduced activity of a

Gene product can be obtained, for example, by the expression of at least one corresponding antisense RNA, a sense RNA to obtain a

Cosuppressionseffektes or the expression of at least one appropriately engineered ribozyme, specifically transcripts of the above

Gene product splits.

For this purpose, DNA molecules may be used which comprise the entire coding sequence of a gene product, including any flanking sequences that may be present, as well as DNA molecules which comprise only parts of the coding sequence, which parts must be long enough to be present in the cells to cause an antisense effect. Also possible is the use of DNA sequences that have a high degree of homology to the coding

Have sequences of a gene product but are not completely identical.

In the expression of nucleic acid molecules in plants, the synthesized protein may be located in any compartment of the plant cell. However, to achieve localization in a particular compartment, for example, the coding region can be linked to DNA sequences that ensure localization in a particular compartment. Such sequences are known to those of skill in the art (see, for example, Braun et al., EMBO J. 11 (1992), 3219-3227; Wolter et al., Proc. Natl. Acad., U.S.A. 85 (1988), 846-850; Sonnewald et al., Plant J. 1 (1991), 95-106). The expression of the nucleic acid molecules can also take place in the organelles of the plant cells. The transgenic plant cells can be regenerated to whole plants by known techniques. The transgenic plants may in principle be plants of any plant species, ie both monocotyledonous and dicotyledonous plants. Thus, transgenic plants are available that changed

Have properties by overexpression, suppression or inhibition of homologous (= natural) genes or gene sequences or expression of heterologous (= foreign) genes or gene sequences.

The present invention also provides a process for

Control of undesired plant growth (e.g.

preferably in crops such as cereals (e.g., hard and soft wheat, barley, rye, oats, crosses thereof such as triticale, planted or sown rice under 'upland' or 'paddy' conditions, corn, millet such as

Sorghum), sugar beet, cane, canola, cotton, sunflower, soya,

Potato, tomatoes, beans such as bush bean and horse bean,

Flax, pasture grass, orchards, plantation crops, green areas and lawns, as well as residential and industrial sites, railway tracks, more preferably in monocotyledonous crops such as cereals, e.g. Wheat, barley, rye, oats,

Crosses thereof, such as triticale, rice, maize and millet, and dicotyledonous crops such as sunflowers, soy, potato, tomato, peas, carrots and fennel, where components A and B of the herbicidal compositions of the invention are taken together or separately, e.g. in pre-emergence (very early to late), post-emergence or pre-emergence, on the plants, e.g. Harmful plants, plant parts, plant seeds or the area on which the plants grow, e.g. applied the acreage.

The invention also provides the use of the herbicidal compositions according to the invention comprising components A and B for controlling

Harmful plants, preferably in plant crops, preferably in the above-mentioned crops. Furthermore, the invention also relates to the use of the herbicidal compositions according to the invention comprising the components A and B for controlling herbicide-resistant harmful plants (eg TSR and EMR resistance in ALS and ACCase), preferably in plant crops, preferably in the above-mentioned crops.

The invention also provides the process with the herbicidal compositions according to the invention containing components A and B for the selective control of harmful plants in plant crops, preferably in the abovementioned crops, and the use thereof.

The invention also provides the method for controlling

undesirable plant growth with the herbicidal compositions according to the invention containing the components A and B, and its use, in

Plant cultures that are genetically modified (transgenic) or by

Mutation selection were obtained, and which against growth substances, such. 2,4 D, dicamba or against herbicides containing essential plant enzymes, e.g.

Acetolactate synthases (ALS), EPSP synthases, glutamine synthases (GS) or

Hydoxyphenylpyruvate Dioxygenases (HPPD) inhibit, respectively against herbicides from the group of sulfonylureas, glyphosate, glufosinate or

Benzoylisoxazole and analogues, or against any combination of these agents, are resistant. Particularly preferably, the

Herbicidal agents according to the invention are used in transgenic crops which are resistant to a combination of glyphosates and glufosinates,

Glyphosaten and sulfonylureas or imidazolinones are resistant. Most preferably, the herbicidal compositions of the invention in transgenic crops such. B. corn or soybean with the trade name or the

Name Optimum ™ GAT ™ (Glyphosate ALS Tolerant).

The invention also relates to the use of the herbicidal compositions according to the invention comprising components A and B for controlling

Harmful plants, preferably in plant crops, preferably in the above-mentioned crops. The herbicides middle of the invention! can also be used non-selectively for controlling undesired plant growth, eg in

Plantation crops, on roadsides, squares, industrial plants or

Railway installations; or selectively used to control undesired plant growth in crops for energy production (biogas, bio-ethanol).

The herbicidal compositions according to the invention can be present both as mixed formulations of components A and B and optionally with further agrochemical active ingredients, additives and / or customary formulation auxiliaries, which are then diluted with water in the customary manner, or separated as so-called tank mixtures by joint dilution formulated or partially separately formulated components are prepared with water. Under certain circumstances, the mixed formulations with others

Liquids or solids diluted or used undiluted.

The components A and B can be formulated in various ways, depending on which biological and / or chemical-physical parameters are given. As general formulation options come

for example in question: wettable powder (WP), water-soluble concentrates,

emulsifiable concentrates (EC), aqueous solutions (SL), emulsions (EW) such as oil-in-water and water-in-oil emulsions, sprayable solutions or

Emulsions, suspension concentrates (SC), dispersions, oil dispersions (OD), suspoemulsions (SE), dusts (DP), mordants, granules for soil or litter application (GR) or water-dispersible granules (WG), ultra-low-volume formulations, Microcapsule or wax dispersions.

The individual formulation types are known in principle and will be

for example, described in: "Manual on Development and Use of FAO and WHO Specifications for Pesticides", FAO and WHO, Rome, Italy, 2002; Winnacker-Kuchler, "Chemische Technologie", Volume 7, C. Hanser Verlag Munich, 4th ed. 1986; van Valkenburg, "Pesticide Formulations", Marcel Dekker N.Y. 1973; K.

Martens, "Spray Drying Handbook", 3rd ed. 1979, G. Goodwin Ltd. London. The necessary formulation auxiliaries such as inert materials, surfactants, solvents and other additives are also known and are described, for example, in: Watkins, "Handbook of Insecticides Dust Diluents and Carriers", 2nd ed., Darland Books, Caldwell NJ; Hv Olphen, "Introduction to Clay Colloid Chemistry"; 2nd Ed., J. Wiley & Sons, NY Marsden, "Solvents Guide", 2nd Ed., Interscience, NY 1950; McCutcheon's, "Detergents and Emulsifiers Annual", MC Publ. Corp., Ridegewood NJ; Sisley and Wood, "Encyclopedia of Surface Active Agents", Chem. Publ. Co. Inc., NY 1964; Schönfeldt, "Grenzflächenaktive Äthylenoxidaddukte", Wiss. Verlagsgesellschaft, Stuttgart 1976, Winnacker-Kuchler, "Chemical Technology", Volume 7, C. Hanser Verlag Munich, 4th ed. 1986.

On the basis of these formulations it is also possible to prepare combinations with other agrochemical active substances, such as fungicides, insecticides, as well as safeners, fertilizers and / or growth regulators, e.g. in the form of a ready-made formulation or as a tank mix.

Spray powders (wettable powders) are uniformly dispersible in water

Preparations which, in addition to the active substances other than one or more diluents or inert substances, also contain ionic and / or nonionic surfactants (wetting agents, dispersants), e.g. polyoxethylated alkylphenols, polyethoxylated fatty alcohols or fatty amines, propylene oxide-ethylene oxide copolymers, alkanesulfonates or alkylbenzenesulfonates or alkylnaphthalenesulfonates, sodium lignosulfonate, sodium 2,2'-dinaphthylmethane-6,6'-disulfonate, dibutylnaphthalene-sodium sulfonate or sodium oleoylmethyltaurine.

Emulsifiable concentrates are made by dissolving the active ingredients in one

organic solvent or solvent mixture, for example butanol, cyclohexanone, dimethylformamide, acetophenone, xylene or higher-boiling aromatics or hydrocarbons with addition of one or more ionic and / or nonionic surfactants (emulsifiers). Examples of emulsifiers which can be used are: alkylarylsulfonic acid calcium salts, such as calcium Dodecyl benzene sulphonate or nonionic emulsifiers such as fatty acid polyglycol esters, alkylaryipolyglycol ethers, fatty alcohol polyglycol ethers, propylene oxide ethylene oxide

Copolymers, alky-polyethers, sorbitan fatty acid esters,

Polyoxyethylene sorbitan fatty acid esters or polyoxethylene sorbitol esters.

Dusts are obtained by grinding the active ingredient with finely divided solids, e.g. Talc, natural clays such as kaolin, bentonite and pyrophyllite, or diatomaceous earth. Suspension concentrates are water-based suspensions of active ingredients. They can be prepared, for example, by wet grinding using commercially available bead mills and, if appropriate, addition of further surfactants, as described, for example, in US Pat. are already listed above for the other formulation types. In addition to the suspended drug or agents, other drugs in the

Formulation also be solved.

Oil dispersions are oil-based suspensions of active ingredients, where by oil is meant any organic liquid, e.g. As vegetable oils, aromatic or aliphatic solvents, or fatty acid alkyl esters. They can be prepared, for example, by wet milling using commercially available bead mills and, if appropriate, addition of further surfactants (wetting agents, dispersants), as described, for example, in US Pat. are already listed above for the other formulation types. In addition to the suspended drug or agents, other drugs in the

Formulation also be solved.

Emulsions, for example oil-in-water emulsions (EW), can be prepared, for example, by means of stirrers, colloid mills and / or static mixers from mixtures of water and water-immiscible organic solvents and optionally other surfactants, such as those mentioned above in the others Formulation types are already listed. The active ingredients are present in dissolved form. Granules can be prepared either by spraying the active ingredient on adsorptive, granulated inert material or by applying

Active substance concentrates by means of adhesives, e.g. Polyvinyl alcohol, polyacrylic acid sodium or mineral oils, on the surface of carriers such as sand, kaolinites, chalk or granulated inert material. Also suitable

Active ingredients in the usual manner for the production of fertilizer granules - if desired, mixed with fertilizers - granulated.

Water-dispersible granules are generally prepared by the usual methods such as spray drying, fluidized bed granulation, plate granulation, mixing with high-speed mixers and extrusion without solid inert material. For the preparation of plate, fluid bed, extruder and spray granules, see e.g.

Process in "Spray-Drying Handbook" 3rd ed. 1979, G. Goodwin Ltd., London; J.E. Browning, "Agglomeration", Chemical and Engineering 1967, pages 147 ff; Perry's Chemical Engineer's Handbook, 5th Ed., McGraw-Hill, New York 1973, pp. 8-57.

For further details on the formulation of crop protection agents see, e.g. G.C. Klingman, "Weed Control as a Science", John Wiley and Sons, Inc., New York, 1961, pp. 81-96 and J.D. Freyer, S.A. Evans, "Weed Control Handbook", 5th Ed., Blackwell Scientific Publications, Oxford, 1968, pp. 101-103.

The agrochemical formulations usually contain from 0.1 to 99

Weight percent, in particular 2 to 95 wt .-%, active ingredients of the herbicidal components, wherein depending on the formulation, the following concentrations are common: In wettable powders, the active ingredient concentration, for example, about 10 to 95 wt .-%, the rest to 100 wt .-% consists from customary formulation ingredients. In the case of emulsifiable concentrates, the active ingredient concentration may be, for example, from 5 to 80% by weight. Dusty formulations usually contain 5 to 20 wt .-% of active ingredient, sprayable solutions about 0.2 to 25 wt .-% of active ingredient. In the case of granules such as dispersible granules, the active ingredient content depends, in part, on whether the active compound is liquid or solid and which granulating aids and fillers are used. As a rule, the content of the water-dispersible granules is between 10 and 90% by weight. In addition, the active substance formulations mentioned optionally contain the customary adhesives, wetting agents, dispersants, emulsifiers, preservatives, antifreeze agents and solvents, fillers, colorants and carriers, defoamers,

Evaporation inhibitors and agents that affect the pH or viscosity.

The herbicidal action of the herbicidal combinations according to the invention can be improved, for example, by surface-active substances, for example by wetting agents from the series of fatty alcohol polyglycol ethers. The fatty alcohol polyglycol ethers preferably contain 10 to 18 C atoms in the fatty alcohol radical and 2 to 20 ethylene oxide units in the polyglycol ether section. The fatty alcohol polyglycol ethers may be nonionic or ionic, for example in the form of fatty alcohol polyglycol ether sulfates or phosphates, which are used, for example, as alkali salts (eg sodium and potassium salts) or ammonium salts, or else as alkaline earth salts such as magnesium salts, such as C 12 / Ci4 fatty alcohol diglykolethersulfat- sodium (Genapol ^® LRO, Clariant GmbH); See, for example, EP-A-0476555, EP-A-0048436, EP-A-0336151 or US-A-4,400,196 and Proc. EWRS Symp. "Factors Affecting Herbicidal Activity and Selectivity", 227-232 (1988). Nonionic fatty alcohol polyglycol ethers are, for example, 2 to 20, preferably 3 to 15,

Ethylene oxide-containing (C10 Cie) -, preferably (Cio-Ci4) -Fettalkohol- polyglycol ethers (for example isotridecyl alcohol polyglycol ether), for example from the Genapol ^® X series, such as Genapol ^® X-030, Genapol ^® X-060, Genapol ^® X 080 or Genapol ^® X-150 (all from Clariant GmbH).

The present invention further comprises the combination of components A and B with the aforementioned wetting agents from the series of fatty alcohol polyglycol ethers containing preferably 10-18 C atoms in the fatty alcohol moiety and 2-20 ethylene oxide moieties in the polyglycol ether moiety and nonionic or ionic (eg Fatty alcohol polyglycol ether sulfates) may be present. 15 ethylene oxide units, for example from the Genapol ^® X series, such as Genapol ^® X-030, Genapol ^® X - C ₂ / Ci4-fatty alcohol diglycol ether sulfate sodium (Genapol ^® LRO, Clariant GmbH) and isotridecyl alcohol polyglycol ether having 3 are preferably 060, Genapol ^® X-080 and Genapol ^® X-150 (all from Clariant GmbH). Furthermore, it is known that fatty alcohol Polyglycol ethers such as nonionic or ionic fatty alcohol polyglycol ethers (eg fatty alcohol Polygiykolethersulfate) as a penetration aid and

Are also suitable for a number of other herbicides, including herbicides from the series of imidazolinones (see, for example, EP-A-0502014).

The herbicidal action of the herbicidal combinations according to the invention can also be enhanced by the use of vegetable oils. Under the term

Vegetable oils are oils from oil-supplying plant species such as soybean oil, rapeseed oil,

Corn oil, sunflower oil, cottonseed oil, linseed oil, coconut oil, palm oil, thistle oil or castor oil, especially rapeseed understood, and their

 Transesterification products, e.g. Alkyl esters such as rapeseed oil methyl ester or rapeseed oil ethyl ester.

The vegetable oils are preferably esters of C10-C22, preferably C12-C20 fatty acids. The Cio-C-22 fatty acid esters are, for example, esters of unsaturated or saturated C 10 -C 22 fatty acids, in particular having an even number of carbon atoms, e.g. Erucic acid, lauric acid, palmitic acid and especially Cie fatty acids such as stearic acid, oleic acid, linoleic acid or linolenic acid.

Examples of Cio-C-22 fatty acid esters are esters obtained by reacting glycerol or glycol with the C 10 -C 22 fatty acids, as described e.g. in oils derived from oil-producing plant species or C 1 -C 20 -alkyl-C 10 -C 22 -fatty acid esters, as described, for example, in US Pat. by transesterification of the abovementioned glycerol or glycol-C 10 -C 22 -fatty acid esters with C 1 -C 20 -alcohols (for example methanol, ethanol, propanol or .alpha

Butanoi) can be obtained. The transesterification can be carried out by known methods, such as e.g. are described in Rompp Chemie Lexikon, 9th edition, Volume 2, page 1343, Thieme Verlag Stuttgart.

Preferred as C 1 -C 20 -alkyl-Cio-C-22 fatty acid esters are methyl esters, ethyl esters, propyl esters, butyl esters, 2-ethylhexyl esters and dodecyl esters. As glycol and

Glycerol-Cio-C22-fatty acid esters preferred are the uniform or mixed glycol esters and glycerol esters of Cio-C22 fatty acids, especially those

Even-numbered fatty acids, eg erucic acid, lauric acid, Palmitic acid and in particular cis-fatty acids such as stearic acid, oleic acid,

Linoleic acid or linolenic acid.

The vegetable oils can be present in the inventive herbicidal compositions, for example in the form of commercially available oil-containing formulation additives, in particular those based on rapeseed oil such as Hasten ^® (Victorian Chemical Company, Australia, hereinbelow termed Hasten, main ingredient: rapeseed oil ethyl ester), Actirob ^® B

(Novance, France, hereinafter referred to ActirobB, main component:

Called Rapsölmethylester), Rako-Binol ^® (Bayer AG, Germany, referred to as Rako-Binol, main ingredient: rapeseed oil), Renol ^® (Stefes, hereinafter referred to Germany Renol, vegetable oil ingredient: Rapsölmethylester) or Stefes Mero ^® (Stefes, Germany, termed Mero called, main component:

Rapeseed oil methyl ester) may be included. The present invention comprises in a further embodiment

Combinations of components A and B with the aforementioned

Vegetable oils such as rapeseed oil, preferably in the form of commercially available oil-containing formulation additives, in particular those based on rapeseed oil such as Hasten ^{®, ®} Actirob B, Rako-Binol ^®, Renol ^® or Stefes Mero ^®.

For use, the formulations present in commercial form are optionally diluted in a customary manner, e.g. for wettable powders, emulsifiable concentrates, dispersions and water-dispersible granules by means of water. Dust-form preparations, soil or spreading granulates, as well as sprayable formulations are usually no longer diluted with further inert substances before use.

The active substances can be applied to the plants, plant parts, plant seeds or the acreage (field soil), preferably to the green plants and plant parts and optionally additionally to the field soil.

One possibility of application is the joint application of the active ingredients in the form of tank mixes, with the optimally formulated concentrated Formulations of the individual active ingredients are mixed together in the tank with water and the resulting spray mixture is discharged.

A common herbicidal formulation of the herbicidal compositions according to the invention with the components A and B has the advantage of easier applicability, because the amounts of the components are already set in the correct relationship to each other. In addition, the adjuvants in the formulation can be optimally matched to one another. A. Formulation Examples of a General Kind

A dust is obtained by adding 10 parts by weight of a

 Active substance / active ingredient mixture and 90 parts by weight of talc mixed as an inert material and comminuted in a hammer mill.

A wettable powder easily dispersible in water is obtained by adding 25 parts by weight of an active substance mixture, 64 parts by weight of kaolin clay as inert material, 10 parts by weight of lignosulfonic acid potassium and 1 part by weight of oleoylmethyltaurine sodium as a mesh and dispersing agent and grinding in a pin mill. c) A suspension concentrate which is readily dispersible in water is obtained by mixing 20 parts by weight of an active substance / active substance mixture with 5 parts by weight of tristyrylphenol polyglycol ether (Soprophor BSU), 1 part by weight

 Lignosulfonate sodium (Vanisperse CB) and 74 parts by weight of water mixed and ground in a ball mill to a fineness of less than 5 microns. d) An oil dispersion which is readily dispersible in water is obtained by adding 20 parts by weight of a hydrogen peroxide with 6 parts by weight

Alkylphenol polyglycol ether (Triton ^® X 207), 3 parts by weight

Isotridecanol polyglycol ether (8 EO) and 71 parts by weight paraffinic Mineral oil (boiling range, for example, about 255 to 277 ° C) mixed and ground in a ball mill to a fineness of less than 5 microns.

An emulsifiable concentrate is obtained from 15 parts by weight of an active ingredient / active substance mixture, 75 parts by weight of cyclohexanone as solvent and 10 parts by weight of ethoxylated nonylphenol as emulsifier.

A water-dispersible granules are obtained by

75 parts by weight of a drug / drug mixture,

10 parts by weight of lignosulfonic acid calcium,

 5 parts by weight of sodium lauryl sulfate,

 3 parts by weight of polyvinyl alcohol and

 7 parts by weight kaolin

milled, ground on a pin mill and granulated the powder in a fluidized bed by spraying water as Granulierflüssigkeit.

A water-dispersible granule is also obtained by mixing 25 parts by weight of an active substance / active substance mixture,

 5 parts by weight of sodium 2,2'-dinaphthylmethane-6,6'-disulfonate,

 2 parts by weight oleoylmethyltaurine acid sodium,

 1 part by weight of polyvinyl alcohol,

17 parts by weight of calcium carbonate and

50 parts by weight of water

Homogenized on a colloid mill and pre-crushed, then grinded on a bead mill and the suspension thus obtained in a spray tower by means of a Einstoffdüse atomized and dried. B. Biological Examples a) Method Descriptions Greenhouse Experiments

In the standard experiment, the seeds of different weeds and grass weeds were found in one with natural soil

Standard field soil (loamy silt, non-sterile) seeded pot of 8-13 cm diameter seeded and covered with a covering layer of the soil of about 1 cm. The pots were then cultured in a greenhouse (12-16 h light, temperature day 20-22 ° C, night 15-18 ° C) until the time of application. The pots were placed on a laboratory sprayer with spray liquors containing the

inventive compositions, mixtures of the prior art or treated with the individually applied components. The application of the active ingredients or combinations of active substances formulated as WG, WP, EC or otherwise took place at the corresponding growth stages of the plants. The amount of water used for the spray application was 100-600 l / ha. After treatment, the plants were placed back in the greenhouses.

About 3 weeks after the application, the soil or / and leaf action was evaluated visually according to a scale of 0-100% compared to an untreated control group: 0% = no discernible effect compared to the untreated control group; 100% = complete effect compared to the untreated control group.

(Notes: The term "seed" also includes vegetative growth forms such as rhizome pieces; abbreviations used: h light = hours

Illumination duration, g AS / ha = grams of active ingredient per hectare, l / ha = liters per hectare, S = sensitive, R = resistant) 1 . Weed effect in pre-emergence: Seeds of different weeds and weed biotypes (origins) were grown in one with natural soil

 Standard field soil (loamy silt, non-sterile) seeded pot of 8-13 cm diameter seeded and covered with a covering layer of the soil of about 1 cm. The pots were then cultured in a greenhouse (12-16 h light, temperature day 20-22 ° C, night 15-18 ° C) until the time of application. The pots were treated at BBCH stage 00-10 of the seeds / plants on a laboratory spray track with spray mixtures with the agents according to the invention, mixtures or with the individually used components as WG, WP, EC or other formulations. The

 Water application rate for the spray application was 100-600 l / ha. After treatment, the plants were again placed in the greenhouses and fertilized and watered as needed. 2. Post-emergence weed action: Seeds of different weeds and weed biotypes (origins) were grown in one with natural soil

 Standard field soil (loamy silt, non-sterile) seeded pot of 8-13 cm diameter seeded and covered with a covering layer of the soil of about 1 cm. The pots were then cultivated in a greenhouse (12-16h light, temperature day 20-22 ° C, night 15-18 ° C) until the time of application. The pots were grown at different BBCH stages between 11-25 seeds / plants, i. usually between two to three weeks after the beginning of the cultivation, on a laboratory spray lane with spray liquors with the

 agents, mixtures or treated with the individually applied components as WG, WP, EC or other formulations. The amount of water used for the spray application was 100-600 l / ha. After treatment, the plants were again placed in the greenhouses and fertilized and watered as needed. 3. Pre-emergence selectivity: seeds of different crops

(Origin) were seeded in a natural soil of a standard field soil (loamy silt, non-sterile) filled pot 8-13 cm in diameter and covered with a covering layer of the bottom of about 1 cm. The pots were then cultured in a greenhouse (12-16 h light, temperature day 20-22 ° C, night 15-18 ° C) until the time of application. The pots were treated at BBCH stage 00-10 of the seeds / plants on a laboratory spray track with spray mixtures with the agents according to the invention, mixtures or with the individually used components as WG, WP, EC or other formulations. The amount of water used for the spray application was 100-600 l / ha. After treatment, the plants were again placed in the greenhouses and fertilized and watered as needed. Postemergence selectivity: Seeds of different crops

(Origins) were seeded in a pot of 8-13 cm diameter filled with natural soil of a standard field soil (loamy silt; non-sterile) and covered with a covering layer of the soil of about 1 cm. The pots were then cultured in a greenhouse (12-16 h light, temperature day 20-22 ° C, night 15-18 ° C) until the time of application. The pots were added to different BBCH stages 1 1 -32 of the seeds / plants, i. usually between two to four weeks after the beginning of the breeding, on one

Laboratory spray booth with spray mixtures with the agents according to the invention,

Treated mixtures or with the individually applied components as WG, WP, EC or other formulations. The

Water application rate for the spray application was 100-600 l / ha. After treatment, the plants were again placed in the greenhouses and fertilized and watered as needed. The pots were cultured in a greenhouse (12-16 h light, temperature day 20-22 ° C, night 15-18 ° C). Weed effect in pre- and post-emergence at different

Cultivation conditions: seeds of different weeds and grass

Biotypes (origins) were found in one with natural soil

Standard field soil (loamy silt: non-sterile) seeded pot 8-13 cm in diameter and covered with a covering layer of the soil of about 1cm. The pots were then placed in a greenhouse (12-16 h Light, temperature day 20-22 ° C, night 15-8 ° C) until the application time. The pots were seeded to different BBCH stages 00-25 of the seeds / plants on a laboratory sprayer with the spray

agents, mixtures or treated with the individually applied components as WG, WP, EC or other formulations. The amount of water used for the spray application was 100-600 l / ha. After treatment, the plants were again placed in the greenhouses and fertilized and watered as needed. The pots were cultured in a greenhouse (12-16 h light, temperature day 20-22 ° C, night 15-18 ° C). The irrigation was varied according to the question. The individual comparison groups were graded in a range from above the PWP (permanent wilting point) and up to the level of the maximum

Field capacity supplied with water. Weed effect in pre- and post-emergence at different

 Irrigation conditions: Seeds of different weeds and weed biotypes (origins) were found in one with natural soil

Standard field soil (loamy silt, non-sterile) seeded pot of 8-13 cm diameter seeded and covered with a covering layer of the soil of about 1 cm. The pots were then cultured in a greenhouse (12-16 h light, temperature day 20-22 ° C, night 15-18 ° C) until the time of application. The pots were seeded to different BBCH stages 00-25 of the seeds / plants on a laboratory sprayer with the spray

agents, mixtures or treated with the individually applied components as WG, WP, EC or other formulations. The amount of water used for the spray application was 100-600 l / ha. After treatment, the plants were again placed in the greenhouses and fertilized and watered as needed. The pots were cultured in a greenhouse (12-16 h light, temperature day 20-22 ° C, night 15-18 ° C). The individual comparison groups were different

Exposed to irrigation techniques. Irrigation was done either from below or in increments from above (simulated irrigation). Weed effect in pre- and post-emergence at different

 Soil conditions: seeds of different weeds and weed Biotypes (origins) were seeded in a natural soil filled pot of 8- 3 cm in diameter and covered with a cover layer of the soil of about 1 cm. For a comparison of herbicidal activity, the plants were cultured in different cultivation soil, from a sandy soil to heavy clay soil and various organic substance contents. The pots were then cultured in a greenhouse (12-16 h light, temperature day 20-22 ° C, night 15-18 ° C) until the time of application. The pots were grown to different BBCH stages 00-25 of the seeds / plants on one

Laboratory spray booth with spray mixtures with the agents according to the invention,

Treated mixtures or with the individually applied components as WG, WP, EC or other formulations. The

Water application rate for the spray application was 100-600 l / ha. After

Treatment, the plants were placed back in the greenhouses and fertilized and watered as needed. The pots were cultured in a greenhouse (12-16 h light, temperature day 20-22 ° C, night 15-18 ° C). Pre and postemergence weed action to control resistant weed / weed species: Seeds of different weeds and weed Biotypes (origins) with different resistance mechanisms to different

Mechanisms of action were in one with natural earth

Standard field soil (loamy silt, non-sterile) seeded pot of 8-13 cm diameter seeded and covered with a covering layer of the soil of about 1 cm. The pots were then cultured in a greenhouse (12-16 h light, temperature day 20-22 ° C, night 15-18 ° C) until the time of application. The pots were seeded to different BBCH stages 00-25 of the seeds / plants on a laboratory sprayer with the spray

agents, mixtures or treated with the individually applied components as WG, WP, EC or other formulations. The amount of water used for the spray application was 100-600 l / ha. After treatment, the plants were again placed in the greenhouses and fertilized and watered as needed. The pots were cultured in a greenhouse (12-16 h light, temperature day 20-22 ° C, night 15-18 ° C) 9. Weed action and culture selectivity in the pre- and post-emergence at

 Different sowing conditions: seeds of different weeds, weed biotypes (origins) and crops (origins) were seeded in a natural soil filled pot of 8-13 cm in diameter and covered with a cover layer of the soil of about 0-5cm. The pots were then cultured in a greenhouse (12-16 h light, temperature day 20-22 ° C, night 15-18 ° C) until the time of application. The pots were grown to different BBCH stages 00-25 of the seeds / plants on one

 Laboratory spray booth with spray mixtures with the agents according to the invention,

 Treated mixtures or with the individually applied components as WG, WP, EC or other formulations. The

 Water application rate for the spray application was 100-600 l / ha. After treatment, the plants were again placed in the greenhouses and fertilized and watered as needed. The pots were cultured in a greenhouse (12-16 h light, temperature day 20-22 ° C, night 15-18 ° C).

field trials

In field trials were under natural conditions in practice

Field preparation and with natural or artificial contamination with

Harmful plants before or after sowing the crops or before or after emergence of the harmful plants, the compositions of the invention, mixtures of the prior art or the individual components applied and in the period of 4 weeks to 8 months after treatment compared to

untreated sections (parcels) visually scored. The were

Damage to crops and the effect against harmful plants recorded as a percentage, as well as the other effects of each test question. b) Results

The following abbreviations were used: BBCH = BBCH code provides information about the morphological developmental stage of a plant. The abbreviation stands officially for the Federal Biological Research Center, Federal Plant Variety Office and Chemical Industry. The range of BBCH 00-10 stands for the stages of germination of the seeds until the surface is pierced. The range of BBCH 11-25 stands for the stages of the sheet development up to the

Assembly (according to the number of tillers or side shoots).

PE = pre-emergence application on the ground; BBCH of seeds / plants 00-10.

PO = postemergence application to the green plant parts; BBCH of plants 1 1- 25.

HRAC = 'Herbicide Resistance Action Committee', which classifies the approved active substances according to their mode of action (MoA). HRAC group A = acetylcoenzyme A carboxylase inhibitors (MoA: ACCase). HRAC group B = acetolactate synthase inhibitors (MoA: ALS).

AS = active substance (based on 100% active ingredient, syn. A.i. (English)). Dose g AS / ha = application rate in grams of active substance per hectare.

LOLSS = Lolium species.

The effects of the herbicidal compositions according to the invention correspond to the stated requirements and thus solve the object of improving the

Application profile of the herbicidal active ingredient Flufenacet (including providing more flexible solutions in terms of required application rates with constant to increased effectiveness).

As far as herbicidal effects of the agents according to the invention in comparison with mixtures of the prior art or with individually applied components against economically important monocotyledonous and dicotyledonous harmful plants were in focus, the synergistic herbicidal effects using the 'Colby formula' (see SR Colby, Weeds 15 (1967), 20-22): E ^c = A + B - (Ax B) / 100 where:

A, B = in each case the effect of components A or B in percent at a dosage of a or b gram AS / ha;

E ^c = expected value according to Colby in% at a dosage of a + b gram AS / ha.

Δ = difference (%) from measured value (%) to expected value (%)

 (measured value minus expected value)

Evaluation: - measured values: in each case for (A) and (B) and (A) + (B) in%

Rating: - measured value (%) greater> than E ^c : = synergism (+ Δ)

- measured value (%) equals = E ^c : = additive effect (± 0Δ)

- measured value (%) less <than E ^c : = antagonism (-Δ) Table 1: Comparison of the effect of the mixture on resistant biotypes of Lolium spp. after a postemergence treatment (PO, BBCH 1 1).

 Comparison product to show the existing resistance in the different biotypes.

In the investigated plant species, a marked synergistic effect against resistant biotypes of the HRAC groups A and B could be detected by the mixture (Δ +41 - +21).

Claims

claims:

1 . Herbicidal agents containing as the only herbicidally active ingredients

 A) flufenacet (component A),

 B) Aclonifen (component B).

2. A herbicidal composition according to claim 1, wherein the herbicidal components are in the weight ratio indicated below:

 (Area component A): (area component B)

 in general (2 - 400): (1 - 100),

 preferably (1-10): (1-25),

 particularly preferred (1-5): (1-10).

3. A herbicidal composition according to claim 1 or 2, containing for the respective

Herbicidal components indicated below

 Component A: in general 5 to 2000 g AS / ha, preferably 30 to 400 g AS / ha, more preferably 50 to 300 g AS / ha flufenacet;

 Component B: generally 10 to 5000 g AS / ha, preferably 80 to 3000 g AS / ha, more preferably 80 to 1000 g AS / ha aclonifen.

4. A herbicidal composition according to any one of claims 1 to 3, additionally containing customary in plant protection additives and / or formulation auxiliaries.

5. A herbicidal composition according to any one of claims 1 to 4, additionally containing one or more further components from the group of agrochemical active substances comprising insecticides, fungicides and safeners.

6. Use of the defined according to any one of claims 1 to 5 herbicidal compositions for controlling harmful plants.

7. Use of the defined in any one of claims 1 to 5 herbicidal compositions for controlling herbicide-resistant harmful plants.

8. A method for controlling undesired plant growth, wherein the components A and B of the herbicidal agents, defined according to any one of claims 1 to 5, are applied together or separately to the plants, plant parts, plant seeds or the area on which the plants grow ,

9. The method of claim 8 for the selective control of harmful plants in crops.

10. The method of claim 9, wherein the crops have been genetically engineered or obtained by mutation selection.