EP2571366A1 - Agents herbicides pour cultures de maïs tolérantes ou résistantes - Google Patents

Agents herbicides pour cultures de maïs tolérantes ou résistantes

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Publication number
EP2571366A1
EP2571366A1 EP11721509A EP11721509A EP2571366A1 EP 2571366 A1 EP2571366 A1 EP 2571366A1 EP 11721509 A EP11721509 A EP 11721509A EP 11721509 A EP11721509 A EP 11721509A EP 2571366 A1 EP2571366 A1 EP 2571366A1
Authority
EP
European Patent Office
Prior art keywords
chloro
fluoro
methoxyphenyl
amino
carboxylic acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11721509A
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German (de)
English (en)
Inventor
Erwin Hacker
Hansjörg Dietrich
Klaus Trabold
Elmar Gatzweiler
Frank Ziemer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer Intellectual Property GmbH
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Bayer Intellectual Property GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer Intellectual Property GmbH filed Critical Bayer Intellectual Property GmbH
Priority to EP11721509A priority Critical patent/EP2571366A1/fr
Publication of EP2571366A1 publication Critical patent/EP2571366A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
    • A01N57/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
    • A01N57/20—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing acyclic or cycloaliphatic radicals
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
    • A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings

Definitions

  • the invention is in the field of pesticides which can be used against harmful plants in tolerant or resistant crops of maize and contain as herbicidal active ingredients a combination of two or more herbicides.
  • tolerant or resistant maize varieties and strains in particular transgenic maize varieties and strains, the traditional weed control system will be supplemented with new non-selective active ingredients per se in conventional maize varieties.
  • the effectiveness of these herbicides against harmful plants in the tolerant crops is at a high level, but depends - as in other conventional herbicidal treatments - on the type of herbicide used, its application rate, the particular form of preparation, in each case Sch ad plant stages, the climate and soil conditions, etc. from. Furthermore, the herbicides have weaknesses (gaps) against specific types of harmful plants or resistant species. Another criterion is the duration of the action or the degradation rate of the herbicide. It may also be necessary to take account of changes in the susceptibility of harmful plants, which may occur with prolonged use of the herbicides or geographically. Losses in individual plants can be compensated only partially, if at all, by higher application rates of herbicides.
  • a lower application rate not only reduces the amount of an active substance required for the application, but generally reduces it also the amount of necessary formulation aids. Both reduce the economic outlay and improve the ecological compatibility of the herbicide treatment.
  • One way to improve the application profile of a herbicide may be to combine the active ingredient with one or more other agents that provide the desired additional properties.
  • phenomena of chemical, physical and biological incompatibility often occur in the combined use of several active ingredients, eg. B. lack of stability of a coformulation, decomposition of an active ingredient or antagonism in the biological activity of the active ingredients. Desired, however, are combinations of active ingredients with favorable effect profile, high stability and synergistically enhanced as possible effect, which allows a reduction in the application rate compared to the single application of the active ingredients to be combined.
  • the compounds (A) and (B) are known. Compounds of type (A1) are described, for example, in DE-A 2717440. Compounds of type (B1) are described, for example, in WO 2007/082098. Mixtures of these compounds with other herbicides are described, for example, in WO 2009/029518. There are also described synergistic mixtures of some of the (B) components according to the invention with the total herbicide glyphosate, but not their use in tolerant cultures, but only synergism with respect to the herbicidal activity against weeds / weeds. WO 2007/120706 discloses synergistic herbicide combinations (01, p. 1, Z.
  • the invention thus relates to the use of herbicide combinations for combating harmful plants in maize crops, characterized in that the respective herbicide combination comprises a herbicide from the group of the compounds of the formula (A1)
  • Z is hydroxy, -NHCH (CH 3 ) CONHCH (CH 3 ) COOH -NHCH (CH 3 ) CONHCH [CH 2 CH (CH 3 ) 2 ] COOH, or its ester or salts, and
  • X is N or CH and R is CO 2 H or a herbicidally active derivative
  • the maize cultures are tolerant to the herbicides (A) and (B) contained in the combination, optionally in the presence of safeners.
  • Preferred as component (A) are glufosinates and their salts
  • Glufosinate-ammonium (A1 .1), - L-glufosinate-ammonium (A1 .2) and
  • Bialaphos sodium (A1 .3).
  • the compounds of formula (B1) may further form salts by addition of a suitable inorganic or organic acid such as HCl, HBr, H 2 SO 4 or HNO 3 , but also oxalic acid or sulfonic acids to a basic group such as amino or alkylamino , Suitable substituents which are present in deprotonated form, such as, for example, sulfonic acids or carboxylic acids, can form internal salts with groups which can themselves be protonated, such as amino groups. Salts can also be formed by replacing the hydrogen with a suitable cation for agriculture with suitable substituents, such as, for example, sulfonic acids or carboxylic acids.
  • salts are, for example, metal salts, in particular alkali metal salts or alkaline earth metal salts, in particular sodium and potassium salts, or else ammonium salts, salts with organic amines or quaternary ammonium salts with cations of the formula [NRR'R "R"'] + , wherein R to R '"each independently represent an organic radical, in particular alkyl, aryl, aralkyl or alkylaryl.
  • the compounds of general formula (B1) may also include N-oxides.
  • Corresponding pyridine-N-oxides are available as pure oxides at the corresponding pyridine atoms. Appropriate oxidation methods are, for example, in Houben-Weyl, Methods of Organic Chemistry, Extension and following volumes to the 4th edition, Volume E 7b, p 565 f. described.
  • component (B) in each case are:
  • the synergistic effects allow a reduction in the application rates of the individual active ingredients, a higher rate of action / strength over the same harmful plant species at the same application rate, the control of previously unrecognized species (gaps, resistant species), an extension of the period of application and / or a reduction in the number of individual applications required and - as a result for the user - economically and ecologically more advantageous weed control systems.
  • herbicide combinations are provided which can be used particularly favorably in tolerant maize cultures.
  • the herbicides mentioned (A1 .1) to (A1 .3) are taken up via the green parts of the plants and are known as broad-spectrum herbicides or total herbicides; they are inhibitors of the enzyme glutamine synthetase in plants; see “The Pesticide Manual "11th Edition, British Crop Protection Council 1997, pp. 643-645 and 120-121, respectively.
  • the combinations are suitably used in maize cultures that are tolerant to the compounds (A1) and (B).
  • the tolerance may have been produced by breeding or mutation selection (for example, analogously to the commercially available Clearfield® maize cultures from BASF, which are tolerant to imidazolinone herbicides), or else by genetic engineering methods.
  • Some tolerant maize cultures that have been genetically engineered are already known and used in the field, e.g. Liberty Link® corn from Bayer CropScience or Roundup Ready® corn from Monsanto; see . Article in the magazine "sugar beet" 47th year (1998), p. 217 ff .; for the production of transgenic plants which are resistant to glufosinate, cf.
  • the application rates of the herbicides (B) can vary widely.
  • the following ranges are expedient: In general 2.5-500 g AS / ha, preferably 4 to 400 g AS / ha, particularly preferred 5-250 g AS / ha (see the information on the group of the compounds (A)).
  • the combinations according to the invention can be used together with other active ingredients, for example from the group of fungicides, insecticides and plant growth regulators or from the group of customary in plant protection additives and formulation auxiliaries.
  • Additives are, for example, fertilizers, ionic / nonionic wetting agents, oils and dyes.
  • those combinations according to the invention which also contain one or more further active compounds of other structure [active ingredients (C)], for example safeners, plant growth regulators or other herbicides.
  • active ingredients (C) for example safeners, plant growth regulators or other herbicides.
  • active ingredients (B) and (C) for example safeners, plant growth regulators or other herbicides.
  • compositions which can be used according to the invention comprise as active ingredient (C) bicyclopyrones, nicosulfuron, cyprosulfamides, mefenpyr (-diethyl), isoxadifen (-ethyl), acetochlor, alachlor, atrazines, bromoxynil (C4), carfentrazone-ethyl, dicamba, diflufenzopyr , Dimethenamid-P, Florasulam, Flufenacet (Thiafluamide), Flumiclorac-pentyl, Flumioxazine, Fluroxypyr, Fluroxypyr-meptyl, Foramsu lufonon (C 1), Glyphosate, Glyphosate-diammonium, Glyphosateisopropylammonium, Glyphosate-Potassium, Halosulfuron, Lodosulfuron-
  • compositions which can be used according to the invention contain, as active ingredient (C), cyprosulfamides or isoxadifen (-ethyl) as safener.
  • compositions which can be used according to the invention contain at least one active ingredient (C) selected from the group consisting of bicyclopyrone, foramsulfuron (C1), iodosulfuron (C2), isoxaflutole (C3), bromoxynil (C4), flumioxazine (C5 ), Rimsulfuron (C6), mesotrione (C7), thiencarbazone-methyl (C8), tembotrione (C9), atrazine (C10), flufenacet (C1 1), acetochlor (C1 2), toprame zone (C1 3), isoxad ifene ( C14), sulcotrione (C15), Thiencarbazone (C16)
  • Active substance Active substance Active substance (A) (B) (C) (A) (B) (C) (A) (B) (C) A1.1 B1.1 C12
  • A1.1 B1.11 C10 A1.1 B1.13 C4 Active substance Active substance Active substance Active substance Active substance (A) (B) (C) (A) (B) (C)
  • A1.2 B1.20 C11 A1.2 B1.22 C5 Active substance Active substance Active substance Active substance Active substance (A) (B) (C) (A) (B) (C)
  • the combinations according to the invention have an excellent herbicidal activity against a broad spectrum of economically important monocotyledonous and dicotyledonous harmful plants.
  • Hard-to-control perennial herbs, which sprout out of rhizomes, rhizomes or other endemic organs, are also well recognized by the active ingredients. It does not matter whether the substances are applied in the pre-sowing, pre-emergence or postemergence process. Preferably, the application is postemergence or early pre-seed or pre-emergence.
  • both groups also combat those harmful plants which are resistant to one or more herbicides or herbicidal groups, for example harmful plants, resulting from a target site resistance or metabolic resistance of ACCAse inhibitors, ALS inhibitors, EPSPS.
  • Inhibitors, H PPD inhibitors, 2,4-D or dicamba can no longer be controlled.
  • the agents according to the invention are applied to the surface of the earth before germination, 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 die completely after three to four weeks ,
  • the herbicidal compositions according to the invention are characterized by a more rapid onset and longer-lasting herbicidal action.
  • the rainfastness of the active ingredients in the inventive Combinations is usually cheap.
  • a particular advantage is the fact that the dosages of compounds (A) and (B) used and effective in the combinations can be set so low that their soil effect is optimal and advantageous over secondary crops. Therefore, their use is not only possible in sensitive cultures, but groundwater contamination is virtually avoided.
  • the combination of active substances according to the invention enables a considerable reduction in the required application rate of the active ingredients.
  • compositions according to the invention have excellent herbicidal activity against monocotyledonous and dicotyledonous weeds, the tolerant or cross-tolerant maize plants are damaged only insignificantly or not at all.
  • the agents according to the invention sometimes have excellent growth-regulatory properties in the maize plants. They are attacking regulate in the plant's own metabolism and can thus be used for the targeted influencing of plant ingredients. Furthermore, they are also suitable for the general control and inhibition of undesirable vegetative growth, without killing the plants. Inhibition of vegetative growth plays an important role in many monocotyledonous and dicotyledonous cultures, since storage can be reduced or completely prevented by increased stability.
  • the control agents for harmful plants can be used in known tolerant or cross-tolerant maize crops or tolerant or genetically modified maize crops to be developed.
  • the transgenic plants are usually characterized by particular advantageous properties, in addition to the resistances to the agents according to the invention, for example, by resistances against plant kranes or pathogens of plant kranes such as certain insects or microorganisms such as fungi, bacteria or viruses.
  • Other special properties relate to z. B. the crop in terms of quantity, quality, shelf life, composition and special ingredients.
  • transgenic plants with increased oil content or altered quality eg. B. other fatty acid composition of the crop known.
  • Transgenic crops such as cotton, with the ability to produce Bacillus thuringiensis toxins (Bt toxins), which make the plants resistant to certain pests (EP-A 0 142 924, EP-A 0 193 259).
  • Bacillus thuringiensis toxins Bacillus thuringiensis toxins
  • transgenic crops 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 0 309 862 A, EP 0 464 461 A)
  • transgenic crops characterized by a combination of e.g. the o. g. characterize new properties ("gene stacking")
  • nucleic acid molecules can be introduced into plasmids that undergo mutagenesis or sequence alteration Allow recombination of DNA sequences.
  • base exchanges can be made, partial sequences removed or natural or synthetic sequences added.
  • the production of plant cells having a reduced activity of a gene product can be achieved, for example, by the expression of at least one corresponding antisense RNA, one n se RNA to obtain a cosuppression effect, or the expression of at least one correspondingly engineered ribozyme which is specific Transcripts of the above gene product cleaves.
  • DNA molecules can be used which comprise the entire coding sequence of a gene product, including any flanking sequences which may be present, as well as DNA molecules which comprise only parts of the coding sequence, which parts have to be long enough to be inserted into the Cells cause an antisense effect. It is also possible to use DNA sequences which have a high degree of homology to the coding sequences of a gene product, but are not completely identical.
  • the synthesized protein may be located in any compartment of the plant cell.
  • the coding region can be linked to DNA sequences that ensure localization in a particular compartment.
  • sequences are known to those skilled 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 (1 991), 95-106).
  • Expression of the nucleic acid molecules can also be found in the Organelles of the plant cells take place.
  • 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, that is, both monocotyledonous and dicotyledonous plants.
  • the agents according to the invention can be used in transgenic maize cultures which are not only active against component (A) but also against growth substances (such as, for example, 2,4-D or dicamba and / or compounds of group (B)) or against herbicides which essential plant enzymes, eg Acetolactate synthases (ALS), EPSP synthases or Hydoxyphenylpyruvat dioxygenases (HPPD) inhibit, respectively, are tolerant to herbicides from the group of sulfonylureas, glyphosate or Benzoylisoxazole and analogues, or against any combination of these agents.
  • ALS Acetolactate synthases
  • HPPD Hydoxyphenylpyruvat dioxygenases
  • the agents according to the invention can particularly preferably be used in transgenic maize cultures which are tolerant to a combination of glyphosates and glufosinates or to a combination of glufosinates and / or glyphosates and / or sulfonylureas and / or imidazolinones.
  • the invention therefore also provides a method for controlling undesired plant growth in tolerant maize cultures, which comprises applying one or more herbicides of the type (A) with one or more herbicides of the type (B) to the harmful plants, plant parts thereof or the Cultivated area applied.
  • the invention also relates to the novel combinations of compounds (A) + (B) and herbicidal compositions containing them.
  • the active compound combinations according to the invention can be present both as mixed formulations of the two components, optionally with further active ingredients, additives and / or customary formulation auxiliaries, which are then diluted with water in a customary manner, or as so-called tank mixtures by joint dilution of the separately formulated or partially separated formulated components are prepared with water.
  • compositions of the invention can be used in the form of wettable powders, emulsifiable concentrates, sprayable solutions, dusts or granules in the usual preparations.
  • the invention therefore also relates to herbicidal and plant growth-regulating agents which contain the agents according to the invention.
  • the agents according to the invention can be formulated in various ways, depending on which biological and / or chemical-physical parameters are predetermined. Possible formulation options are, for example: wettable powder (WP), water-soluble powders (SP), water-soluble concentrates, emulsifiable concentrates (EC), emulsions (EW), such as oil-in-water and water-in-oil emulsions (OD).
  • WP wettable powder
  • SP water-soluble powders
  • EC emulsifiable concentrates
  • EW emulsions
  • OD oil-in-water and water-in-oil emulsions
  • Injectable powders are preparations which are uniformly dispersible in water and contain surfactants of the ionic and / or nonionic type (wetting agents, dispersants), for example polyoxyethylated alkylphenols, polyoxethylated fatty alcohols, polyoxethylated fatty amines, fatty alcohol polyglycol ether sulfates, alkanesulfonates, alkylbenzenesulfonates, in addition to the active ingredient except a diluent or inert substance.
  • surfactants of the ionic and / or nonionic type wetting agents, dispersants
  • wetting agents, dispersants for example polyoxyethylated alkylphenols, polyoxethylated fatty alcohols, polyoxethylated fatty amines, fatty alcohol polyglycol ether sulfates, alkanesulfonates, alkylbenzenesulfon
  • the herbicidal active ingredients are finely ground, for example, in conventional apparatus such as hammer mills, blower mills and air-jet mills and simultaneously or subsequently with the Formulation aids mixed.
  • Emulsifiable concentrates are prepared by dissolving the active ingredient in an organic solvent, e.g. Butanol, cyclohexanone, dimethylformamide, xylene or higher-boiling aromatics or hydrocarbons or mixtures of organic solvents with the addition of one or more surfactants of ionic and / or nonionic type (emulsifiers).
  • organic solvent e.g. Butanol, cyclohexanone, dimethylformamide, xylene or higher-boiling aromatics or hydrocarbons or mixtures of organic solvents.
  • emulsifiers for example, be used: Al kylarylsulfonsaure calcium salts such as calcium dodecylbenzenesulfonate or nonionic emulsifiers such as fatty acid, alkylaryl, fatty alcohol, propylene oxide-ethylene oxide condensation products, alkyl polyethers, sorbitan esters such.
  • B. Polyoxyethylene. Dusts are obtained by milling the active ingredient with finely divided solids, e.g. Talc, natural clays such as kaolin, bentonite and pyrophyllite, or diatomaceous earth.
  • Suspension concentrates may be water or oil based. You can Kings, for example, by wet grinding by means of commercial bead mills and, if appropriate ls addition of surfactants, such as. B. are already listed above for the other formulation types.
  • Emulsions e.g. Oil-in-water emulsions (EW) can be prepared, for example, by means of stirrers, colloid mills and / or static mixers using aqueous organic solvents and optionally surfactants, as described, for example, in US Pat. listed above for the other formulation types.
  • EW Oil-in-water emulsions
  • Granules can be prepared either by spraying the active substance onto adsorbed, granulated inert material or by applying active substance concentrates by means of adhesives, for example polyvinyl alcohol, polyacrylic acid Sodium or mineral oils, on the surface of carriers such as sand, kaolinites or granulated inert material. It is also possible to granulate suitable active ingredients in the manner customary for the production of fertilizer granules, if desired in admixture with fertilizers.
  • adhesives for example polyvinyl alcohol, polyacrylic acid Sodium or mineral oils
  • Water-dispersible granules are generally prepared by the customary processes such as spray-drying, fluid-bed granulation, plate granulation, mixing with high-speed mixers and extrusion without solid inert material.
  • spray-drying fluid-bed granulation
  • plate granulation mixing with high-speed mixers and extrusion without solid inert material.
  • 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.
  • crop protection agents see, e.g. G.C.
  • the agrochemical preparations generally contain 0, 1 to 99 wt .-%, in particular 0.1 to 95 wt .-%, inventive compositions.
  • the active ingredient concentration is, for example, about 10 to 90 wt .-%, the remainder to 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000% the active ingredient concentration in spray powders is, for example, about 10 to 90% by weight, the remainder to 100% by weight consisting of conventional formulation ingredients
  • the active ingredient concentration may be about 1 to 90, preferably 5 to 80,% by weight.
  • Dusty formulations contain 1 to 30 wt .-% of active ingredient, preferably usually 5 to 20 wt .-% of active ingredient, sprayable solutions contain about 0.05 to 80, preferably 2 to 50 wt .-% of active ingredient.
  • the active ingredient content depends, in part, on whether the active compound is liquid or solid and which granules, fillers, etc. are used.
  • the content of active ingredient is, for example, between 1 and 95% by weight, preferably between 10 and 80% by weight.
  • the active substance formulations mentioned optionally contain the customary adhesion, wetting, dispersing, emulsifying, penetrating, preserving, antifreezing and solvent, fillers, carriers and dyes, antifoams, evaporation inhibitors and the pH and the viscosity-influencing agent.
  • glufosinate-ammonium (A1 .2) as well as that of its L-enantiomer can be improved by surface-active substances, preferably by wetting agents from the series of alkyl polyglycol ether sulfates containing, for example, 6 to 18 carbon atoms and in the form of their alkali metal or ammonium salts, but also be used as magnesium salt, such as Ci 2 / Ci 4 fatty alcohol diglycol ether sulfate sodium (®Genapol LRO, Hoechst); see EP-A-0 476 555, EP-A-0 048 436, EP-A-0 336 151 or US 4,400,196 and Proc. EWRS Symp.
  • alkyl polyglycol ether sulfates is also suitable as a penetration aid and enhancer for a number of other herbicides, including for herbicides from the series of imidazolinones; see EP-A-0 502 014.
  • 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-like preparations, soil or scattering granules, as well as sprayable solutions are usually no longer diluted with other 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 combination of active ingredients (A) and (B) according to the invention has the advantage of easier applicability because the amounts of the components are already set in the correct ratio to each other.
  • the adjuvants in the formulation can be optimally tailored to one another while one Ta n k-mix of different formulations can yield undesired combinations of adjuvants.
  • a dispersion concentrate which is readily dispersible in water is obtained by mixing 20 parts by weight of a combination of active substances according to the invention with 6 parts by weight of alkylphenol polyglycol ether ( ⁇ Triton X 207), 3 parts by weight
  • Isotridecanolpolyglykolether (8 EO) and 71 parts by weight of paraffinic mineral oil (boiling range, for example, about 255 to about 277 C) mixed and milled in a ball mill to a fineness of less than 5 microns.
  • An emulsifiable concentrate is obtained from 15 parts by weight of a combination of active substances according to the invention, 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
  • a water-dispersible granule is also obtained by adding 25 parts by weight of a combination of active substances according to the invention,
  • Seeds or rhizome pieces of monocotyledonous and dicotyledonous weed plants are placed in sandy clay soil in plastic or cardboard pots and covered with soil.
  • the formulated in the form of concentrated aqueous solutions, wettable powders or emulsion concentrates are then applied as an aqueous solution, suspension or emulsion with a water application rate of 100 to 800 l / ha in different dosages on the surface of the cover soil.
  • the pots are placed in the greenhouse and kept under good growth conditions for the weeds.
  • the visual assessment of plant damage or run-on damage occurs after emergence of the test plants after a test period of 3 to 8 weeks in comparison to untreated controls. As the test results show, the compositions according to the invention have a good herbicidal pre-emergence activity against a broad spectrum of grass weeds and weeds.
  • the observed values of the experiments show, at suitable low dosages, an effect of the combinations that are above the Colby Expected Values.
  • compositions according to the invention also have a good herbicidal activity against a broad spectrum of economically important weed grasses and weeds in postemergence. Frequently, effects of the combinations according to the invention are observed which exceed the formal sum of the effects of single application of the herbicides.
  • the observed values of the experiments show, at suitable low dosages, an effect of the combinations which are above the Colby expectation values (see rating in Example 1).
  • Plants of transgenic maize with resistance to one or more herbicides (A) are used in the field on plot size 2 x 5 m under natural field conditions together with typical weed plants; alternatively, weeding occurs naturally when the maize plants are grown.
  • E c expected value according to Colby (see rating to table 1)
  • Corn LL ® Liberty Link corn that is tolerant or resistant to glufosinate-ammonium
  • Application rate g / ai application rate in grams of active ingredient per hectare
  • GA glufosinate-ammonium
  • GA tolerant maize tolerant to GA (GMO: LL maize)
  • Table 6 Crop sustenance in maize (GA tolerant) and efficacy against Setaria viridis
  • Table 7 Crop sustenance in maize (GA tolerant) and efficacy against Pharbitis purpureum
  • Table 8 Crop tolerance in maize (GA tolerant) and efficacy against Eleusine indica. Influence of the safener isoxadifen and cyprosulfamide

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  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

L'invention concerne des associations d'herbicides et l'utilisation d'associations d'herbicides pour la lutte contre les plantes nuisibles dans les cultures de maïs. L'invention est caractérisée en ce que l'association d'herbicides concernée contient (A) un herbicide du groupe des composés de formule (A1), dans laquelle Z désigne hydroxy, -NHCH(CH3)CONHCH(CH3)COOH ou -NHCH(CH3)CONHCH[CH2CH(CH3)2]COOH, ou bien ses esters ou sels, et (B) un herbicide de formule (B1), dans laquelle X représente N ou CH et R désigne CO2H ou un dérivé à action herbicide, et les cultures de maïs sont tolérantes aux herbicides (A) et (B) contenus dans l'association, éventuellement en présence de phytoprotecteurs.
EP11721509A 2010-05-21 2011-05-19 Agents herbicides pour cultures de maïs tolérantes ou résistantes Withdrawn EP2571366A1 (fr)

Priority Applications (1)

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EP11721509A EP2571366A1 (fr) 2010-05-21 2011-05-19 Agents herbicides pour cultures de maïs tolérantes ou résistantes

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US20110294663A1 (en) 2011-12-01
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CN103025168A (zh) 2013-04-03
BR112012029621A2 (pt) 2015-09-22

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