HERBICIDAL MIXTURES
20210289781 · 2021-09-23
Inventors
- Thomas Auler (Bergisch Gladbach, DE)
- Udo BICKERS (Koeln, DE)
- Hubert MENNE (Mainz-Kastel, DE)
- Christoph BREITENSTROETER (Basel, CH)
- Herve Tossens (Verlaine, BE)
Cpc classification
A01N33/22
HUMAN NECESSITIES
A01N31/08
HUMAN NECESSITIES
A01N33/22
HUMAN NECESSITIES
A01N43/90
HUMAN NECESSITIES
International classification
Abstract
The present invention relates to herbicidal mixtures comprising i) aclonifen and ii) cinmethylin, and to herbicidal compositions comprising these mixtures. Furthermore, the present invention relates to a process for preparing these herbicidal mixtures and compositions comprising these mixtures. Furthermore, the invention relates to the use of the mixtures and compositions mentioned in the field of agriculture for controlling harmful plants.
Claims
1. An herbicidal mixture, comprising i) aclonifen and ii) cinmethylin.
2. The herbicidal mixture according to claim 1, comprising at least one further herbicide of group I: 2-[(2,4-dichlorophenyl)methyl]-4,4-dimethyl-3-isoxazolidinone, acetochlor, acifluorfen, acifluorfen-sodium, alachlor, allidochlor, alloxydim, alloxydim-sodium, ametryn, amicarbazone, amidochlor, amidosulfuron, 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methylphenyl)-5-fluoropyridine-2-carboxylic acid, aminocyclopyrachlor, aminocyclopyrachlor-potassium, aminocyclopyrachlor-methyl, aminopyralid, amitrole, ammoniumsulfamate, anilofos, asulam, atrazine, azafenidin, azimsulfuron, beflubutamid, benazolin, benazolin-ethyl, benfluralin, benfuresate, bensulfuron, bensulfuron-methyl, bensulide, bentazone, benzobicyclon, benzofenap, bicyclopyron, bifenox, bilanafos, bilanafos-sodium, bispyribac, bispyribac-sodium, bromacil, bromobutide, bromofenoxim, bromoxynil, bromoxynil-butyrate, -potassium, -heptanoate and -octanoate, busoxinone, butachlor, butafenacil, butamifos, butenachlor, butralin, butroxydim, butylate, cafenstrole, carbetamide, carfentrazone, carfentrazone-ethyl, chloramben, chlorbromuron, chlorfenac, chlorfenac-sodium, chlorfenprop, chlorflurenol, chlorflurenol-methyl, chloridazon, chlorimuron, chlorimuron-ethyl, chlorophthalim, chlorotoluron, chlorthal-dimethyl, chlorsulfuron, cinidon, cinidon-ethyl, cinosulfuron, clacyfos, clethodim, clodinafop, clodinafop-propargyl, clomazone, clomeprop, clopyralid, cloransulam, cloransulam-methyl, cumyluron, cyanamide, cyanazine, cycloate, cyclopyrimorate, cyclosulfamuron, cycloxydim, cyhalofop, cyhalofop-butyl, cyprazine, 2,4-D, 2,4-D-butotyl, -butyl, -dimethylammonium, -diolamine, -ethyl, -2-ethylhexyl, -isobutyl, -isooctyl, -isopropylammonium, -potassium, -triisopropanolammonium and -trolamine, 2,4-DB, 2,4-DB-butyl, -dimethylammonium, -isooctyl, -potassium and -sodium, daimuron (dymron), dalapon, dazomet, n-decanol, desmedipham, detosyl-pyrazolate (DTP), dicamba, dichlobenil, 2-(2,4-dichlorobenzyl)-4,4-dimethyl-1,2-oxazolidin-3-one, 2-(2,5-dichlorobenzyl)-4,4-dimethyl-1,2-oxazolidin-3-one, dichlorprop, dichlorprop-P, diclofop, diclofop-methyl, diclofop-P-methyl, diclosulam, difenzoquat, diflufenican, diflufenzopyr, diflufenzopyr-sodium, dimefuron, dimepiperate, dimethachlor, dimethametryn, dimethenamid, dimethenamid-P, dimetrasulfuron, dinitramine, dinoterb, diphenamid, diquat, diquat dibromide, dithiopyr, diuron, DNOC, endothal, EPTC, esprocarb, ethalfluralin, ethametsulfuron, ethametsulfuron-methyl, ethiozin, ethofumesate, ethoxyfen, ethoxyfen-ethyl, ethoxysulfuron, etobenzanid, F-5231, i.e. N-[2-chloro-4-fluoro-5-[4-(3-fluoropropyl)-4,5-dihydro-5-oxo-1H-tetrazol-1-yl]phenyl]ethansulfonamide, F-7967, i.e. 3-[7-chloro-5-fluoro-2-(trifluoromethyl)-1H-benzimidazol-4-yl]-1-methyl-6-(trifluoromethyl)pyrimidine-2,4(1H,3H)-dione, fenoxaprop, fenoxaprop-P, fenoxaprop-ethyl, fenoxaprop-P-ethyl, fenoxasulfone, fenquinotrione, fentrazamide, flamprop, flamprop-M-isopropyl, flamprop-M-methyl, flazasulfuron, florasulam, fluazifop, fluazifop-P, fluazifop-butyl, fluazifop-P-butyl, flucarbazone, flucarbazone-sodium, flucetosulfuron, fluchloralin, flufenacet, flufenpyr, flufenpyr-ethyl, flumetsulam, flumiclorac, flumiclorac-pentyl, flumioxazin, fluometuron, flurenol, flurenol-butyl, -dimethylammonium and -methyl, fluoroglycofen, fluoroglycofen-ethyl, flupropanate, flupyrsulfuron, flupyrsulfuron-methyl-sodium, fluridone, flurochloridone, fluroxypyr, fluroxypyr-meptyl, flurtamone, fluthiacet, fluthiacet-methyl, fomesafen, fomesafen-sodium, foramsulfuron, fosamine, glufosinate, glufosinate-ammonium, glufosinate-P-sodium, glufosinate-P-ammonium, glufosinate-P-sodium, glyphosate, glyphosate-ammonium, -isopropylammonium, -diammonium, -dimethylammonium, -potassium, -sodium and -trimesium, H-9201, i.e. 0-(2,4-dimethyl-6-nitrophenyl) O-ethyl isopropylphosphoramidothioate, halauxifen, halauxifen-methyl, halosafen, halosulfuron, halosulfuron-methyl, haloxyfop, haloxyfop-P, haloxyfop-ethoxyethyl, haloxyfop-P-ethoxyethyl, haloxyfop-methyl, haloxyfop-P-methyl, hexazinone, HW-02, i.e. 1-(dimethoxyphosphoryl)ethyl (2,4-dichlorophenoxy)acetate, imazamethabenz, imazamethabenz-methyl, imazamox, imazamox-ammonium, imazapic, imazapic-ammonium, imazapyr, imazapyr-isopropylammonium, imazaquin, imazaquin-ammonium, imazethapyr, imazethapyr-immonium, imazosulfuron, indanofan, indaziflam, iodosulfuron, iodosulfuron-methyl-sodium, ioxynil, ioxynil-octanoate, -potassium and -sodium, ipfencarbazone, isoproturon, isouron, isoxaben, isoxaflutole, karbutilate, KUH-043, i.e. 3-({[5-(difluoromethyl)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl}sulfonyl)-5,5-dimethyl-4,5-dihydro-1,2-oxazole, ketospiradox, lactofen, lenacil, linuron, MCPA, MCPA-butotyl, -dimethylammonium, -2-ethylhexyl, -isopropylammonium, -potassium and -sodium, MCPB, MCPB-methyl, -ethyl and -sodium, mecoprop, mecoprop-sodium and -butotyl, mecoprop-P, mecoprop-P-butotyl, -dimethylammonium, -2-ethylhexyl and -potassium, mefenacet, mefluidide, mesosulfuron, mesosulfuron-methyl, mesotrione, methabenzthiazuron, metam, metamifop, metamitron, metazachlor, metazosulfuron, methabenzthiazuron, methiopyrsulfuron, methiozolin, methyl isothiocyanate, metobromuron, metolachlor, S-metolachlor, metosulam, metoxuron, metribuzin, metsulfuron, metsulfuron-methyl, molinate, monolinuron, monosulfuron, monosulfuron-ester, MT-5950, i.e. N-[3-chloro-4-(1-methylethyl)phenyl]-2-methylpentanamide, NGGC-011, napropamide, NC-310, i.e. 4-(2,4-dichlorobenzoyl)-1-methyl-5-benzyloxypyrazole, neburon, nicosulfuron, nonanoic acid (pelargonic acid), norflurazon, oleic acid (fatty acids), orbencarb, orthosulfamuron, oryzalin, oxadiargyl, oxadiazon, oxasulfuron, oxaziclomefon, oxyfluorfen, paraquat, paraquat dichloride, pebulate, pendimethalin, penoxsulam, pentachlorphenol, pentoxazone, pethoxamid, petroleum oils, phenmedipham, picloram, picolinafen, pinoxaden, piperophos, pretilachlor, primisulfuron, primisulfuron-methyl, prodiamine, profoxydim, prometon, prometryn, propachlor, propanil, propaquizafop, propazine, propham, propisochlor, propoxycarbazone, propoxycarbazone-sodium, propyri sulfuron, propyzamide, prosulfocarb, prosulfuron, pyraclonil, pyraflufen, pyraflufen-ethyl, pyrasulfotole, pyrazolynate (pyrazolate), pyrazosulfuron, pyrazosulfuron-ethyl, pyrazoxyfen, pyribambenz, pyribambenz-isopropyl, pyribambenz-propyl, pyribenzoxim, pyributicarb, pyridafol, pyridate, pyriftalid, pyriminobac, pyriminobac-methyl, pyrimisulfan, pyrithiobac, pyrithiobac-sodium, pyroxasulfone, pyroxsulam, quinclorac, quinmerac, quinoclamine, quizalofop, quizalofop-ethyl, quizalofop-P, quizalofop-P-ethyl, quizalofop-P-tefuryl, rimsulfuron, saflufenacil, sethoxydim, siduron, simazine, simetryn, SL-261, sulcotrion, sulfentrazone, sulfometuron, sulfometuron-methyl, sulfosulfuron, SYN-523, SYP-249, i.e. 1-ethoxy-3-methyl-1-oxobut-3-en-2-yl 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoate, SYP-300, i.e. 1-[7-fluoro-3-oxo-4-(prop-2-yn-1-yl)-3,4-dihydro-2H-1,4-benzoxazin-6-yl]-3-propyl-2-thioxoimidazolidine-4,5-dione, 2,3,6-TBA, TCA (trifluoroacetic acid), TCA-sodium, tebuthiuron, tefuryltrione, tembotrione, tepraloxydim, terbacil, terbucarb, terbumeton, terbuthylazin, terbutryn, thenylchlor, thiazopyr, thiencarbazone, thiencarbazone-methyl, thifensulfuron, thifensulfuron-methyl, thiobencarb, tiafenacil, tolpyralate, topramezone, tralkoxydim, triafamone, tri-allate, triasulfuron, triaziflam, tribenuron, tribenuron-methyl, triclopyr, trietazine, trifloxysulfuron, trifloxysulfuron-sodium, trifludimoxazin, trifluralin, triflusulfuron, triflusulfuron-methyl, tritosulfuron, urea sulfate, vernolate, XDE-848, ZJ-0862, i.e. 3,4-dichloro-N-{2-[(4,6-dimethoxypyrimidin-2-yl)oxy]benzyl}aniline, and also the following compounds: ##STR00010##
3. The herbicidal mixture according to claim 1, comprising at least one safener, where the mixture is capable of having an application rate of 5-2000 g AS/ha, optionally 10-500 g AS/ha and optionally 10-300 g AS/ha.
4. The herbicidal mixture according to claim 1, comprising at least one safener selected from the group consisting of: cloquintocet-mexyl, cyprosulfamide, isoxadifen-ethyl and mefenpyr-diethyl.
5. The herbicidal mixture according to claim 1, wherein herbicide components i) aclonifen and ii) cinmethylin, with respect to one another, are present in the weight ratio stated below: (range component i):(range component ii) optionally (1-1000):(1-1000), optionally (1-100):(1-100), optionally (1-50):(1-50).
6. The herbicidal mixture according to claim 1, comprising the respective herbicide components i) aclonifen and ii) cinmethylin are capable of an application rate stated below: component i): optionally 1-2000 g AS/ha, optionally 10-1000 g AS/ha, particularly optionally 10-500 g AS/ha of aclonifen; component ii): optionally 1-2000 g AS/ha, optionally 10-1000 g AS/ha, optionally 10-500 g AS/ha of cinmethylin.
7. The herbicidal mixture according to claim 1, additionally comprising one or more additives and/or formulation auxiliaries customary in crop protection.
8. The herbicidal mixture according to claim 1, additionally comprising one or more further components from the group of agrochemical active compounds comprising insecticides and fungicides.
9. A method for controlling unwanted vegetation which comprises applying the components i) and ii) of the herbicidal mixtures defined in claim 1, jointly or separately to one or more plants, plant parts, plant seeds and/or an area on which plants grow.
10. The method according to claim 9 for selective control of one or more harmful plants in one or more plant crops.
11. The method according to claim 9 in which the plant crops are genetically modified or have been obtained by mutation selection.
12. A product comprising the herbicidal mixture according to claim 1 for controlling one or more harmful plants.
13. A product comprising the herbicidal mixture according to claim 1 for controlling one or more herbicide-resistant harmful plants.
Description
A. GENERAL FORMULATION EXAMPLES
[0194] a) A dust is obtained by mixing 10 parts by weight of an active compound/active compound mixture and 90 parts by weight of talc as inert substance and comminuting the mixture in a hammer mill. [0195] b) A wettable powder which is readily dispersible in water is obtained by mixing 25 parts by weight of an active compound/active compound mixture, 64 parts by weight of kaolin-containing clay as inert substance, 10 parts by weight of potassium lignosulfonate and 1 part by weight of sodium oleoylmethyltaurate as wetting agent and dispersant, and grinding the mixture in a pinned-disc mill. [0196] c) A suspension concentrate which is readily dispersible in water is obtained by mixing 20 parts by weight of an active compound/active compound mixture with 5 parts by weight of tristyrylphenol polyglycol ether (Soprophor BSU), 1 part by weight of sodium lignosulfonate (Vanisperse CB) and 74 parts by weight of water, and grinding the mixture in a friction ball mill to a fineness of below 5 microns. [0197] d) An oil dispersion which is readily dispersible in water is obtained by mixing 20 parts by weight of an active compound/active compound mixture with 6 parts by weight of alkylphenol poly glycol ether (Triton® X 207), 3 parts by weight of isotridecanol polyglycol ether (8 EO) and 71 parts by weight of paraffinic mineral oil (boiling range for example approx. 255 to 277° C.), and grinding the mixture in a friction ball mill to a fineness of below 5 microns. [0198] e) An emulsifiable concentrate is obtained from 15 parts by weight of an active compound/active compound mixture, 75 parts by weight of cyclohexanone as solvent and 10 parts by weight of oxyethylated nonylphenol as emulsifier. [0199] f) Water-dispersible granules are obtained by mixing [0200] 75 parts by weight of an active compound/active compound mixture, [0201] 10 parts by weight of calcium lignosulfonate, [0202] 5 parts by weight of sodium lauryl sulfate, [0203] 3 parts by weight of polyvinyl alcohol and [0204] 7 parts by weight of kaolin, [0205] grinding the mixture in a pinned-disk mill, and granulating the powder in a fluidized bed by spray application of water as a granulating liquid. [0206] g) Water-dispersible granules are also obtained by homogenizing and precomminuting, in a colloid mill, [0207] 25 parts by weight of an active compound/active compound mixture, [0208] 5 parts by weight of sodium 2,2′-dinaphthylmethane-6,6′-disulfonate [0209] 2 parts by weight of sodium oleoylmethyltaurate, [0210] 1 part by weight of polyvinyl alcohol, [0211] 17 parts by weight of calcium carbonate and [0212] 50 parts by weight of water, [0213] then grinding the mixture in a bead mill and atomizing and drying the resulting suspension in a spray tower by means of a one-phase nozzle.
B. BIOLOGICAL EXAMPLES
[0214] a) Description of the Methods
[0215] Greenhouse Trials
[0216] In the standard implementation of the test, seeds of various broad-leaved weed and weed grass biotypes (origins) were sown in an 8-13 cm diameter pot filled with natural soil of a standard field soil (loamy silt) and covered with a covering soil layer of about 1 cm. Depending on the trial conditions, the soil of the standard field soil is sterile or not sterile. The pots were then cultivated 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 on a laboratory track sprayer with spray liquors comprising the mixtures/compositions according to the invention, mixtures of the prior art or the components applied individually. Application of the active compounds or active compound combinations formulated as WG, WP, EC or otherwise was carried out at the appropriate growth stages of the plants. The amount of water used for spray application was 100-600 l/ha. After the treatment, the plants were returned to the greenhouses.
[0217] About 3 weeks after the application, the soil action or/and foliar action was assessed visually according to a scale of 0-100% in comparison to an untreated comparative group: 0%=no noticeable effect compared to the untreated comparative group; 100%=full effect compared to the untreated comparative group.
[0218] (Notes: the term “seeds” also includes vegetative propagation forms such as, for example, rhizome pieces; abbreviations used: h light=hours of illumination, g of AS/ha=grams of active substance per hectare, l/ha=litres per hectare, S=sensitive, R=resistant) [0219] 1. Pre-emergence action against weeds: Seeds of various broad-leaved weed and weed grass biotypes (origins) were sown in an 8-13 cm diameter pot filled with natural soil of a standard field soil (loamy silt) and covered with a covering soil layer of about 1 cm. Depending on the trial conditions, the soil of the standard field soil is sterile or not sterile. The pots were then cultivated 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 track sprayer with spray liquors comprising the mixtures/compositions according to the invention, mixtures or the components applied individually as WG, WP, EC or other formulations. The amount of water used for spray application was 100-600 l/ha. After the treatment, the plants were returned to the greenhouses and fertilized and watered as required. [0220] 2. Post-emergence action against weeds: Seeds of various broad-leaved weed and weed grass biotypes (origins) were sown in an 8-13 cm diameter pot filled with natural soil of a standard field soil (loamy silt) and covered with a covering soil layer of about 1 cm. Depending on the trial conditions, the soil of the standard field soil is sterile or not sterile. The pots were then cultivated 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 various BBCH stages between 11-25 of the seeds/plants, i.e. generally between two to three weeks after the start of the cultivation, on a laboratory track sprayer with spray liquors comprising the mixtures/compositions according to the invention, mixtures or the components applied individually as WG, WP, EC or other formulations. The amount of water used for spray application was 100-600 l/ha. After the treatment, the plants were returned to the greenhouses and fertilized and watered as required. [0221] 3. Pre-emergence action against weeds with and without active compound incorporation: Seeds of various broad-leaved weed and weed grass biotypes (origins) were sown in an 8-13 cm diameter pot filled with natural soil of a standard field soil (loamy silt). Depending on the trial conditions, the soil of the standard field soil is sterile or not sterile. For comparison, either the pots with the seeds were treated at BBCH stage 00-10 of the seeds/plants, i. e. generally two to three weeks after the start of the cultivation, on a laboratory track sprayer with spray liquors comprising the mixtures/compositions according to the invention, mixtures or the components applied individually as WG, WP, EC or other formulations, or an equivalent amount of the mixtures/compositions according to the invention, mixtures or the components applied individually as WG, WP, EC or other formulations was incorporated into the 1 cm covering layer. The amount of water used for spray application was 100-600 l/ha. After the treatment, the plants were returned to the greenhouses and fertilized and watered as required. The pots were cultivated in a greenhouse (12-16 h light, temperature day 20-22° C., night 15-18° C.). [0222] 4. Selective pre-emergence action: Seeds of various crop species (origins) were sown in an 8-13 cm diameter pot filled with natural soil of a standard field soil (loamy silt) and covered with a covering soil layer of about 1 cm. Depending on the trial conditions, the soil of the standard field soil is sterile or not sterile. The pots were then cultivated 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 track sprayer with spray liquors comprising the mixtures/compositions according to the invention, mixtures or the components applied individually as WG, WP, EC or other formulations. The amount of water used for spray application was 100-600 l/ha. After the treatment, the plants were returned to the greenhouses and fertilized and watered as required. [0223] 5. Selective post-emergence action: Seeds of various crop species (origins) were sown in an 8-13 cm diameter pot filled with natural soil of a standard field soil (loamy silt) and covered with a covering soil layer of about 1 cm. Depending on the trial conditions, the soil of the standard field soil is sterile or not sterile. The pots were then cultivated 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 various BBCH stages 11-32 of the seeds/plants, i.e. generally between two to four weeks after the start of the cultivation, on a laboratory track sprayer with spray liquors comprising the mixtures/compositions according to the invention, mixtures or the components applied individually as WG, WP, EC or other formulations. The amount of water used for spray application was 100-600 l/ha. After the treatment, the plants were returned to the greenhouses and fertilized and watered as required. The pots were cultivated in a greenhouse (12-16 h light, temperature day 20-22° C., night 15-18° C.). [0224] 6. Pre-emergence action against weeds: Seeds of various broad-leaved weed and weed grass biotypes (origins) were sown in an 8-13 cm diameter pot filled with natural soil of a standard field soil (loamy silt). Depending on the trial conditions, the soil of the standard field soil is sterile or not sterile. The pots with the seeds were treated prior to sowing on a laboratory track sprayer with spray liquors comprising the mixtures/compositions according to the invention, mixtures or the components applied individually as WG, WP, EC or other formulations. The amount of water used for spray application was 100-600 l/ha. After sowing, the pots were placed in the greenhouses and fertilized and watered as required. The pots were cultivated in a greenhouse (12-16 h light, temperature day 20-22° C., night 15-18° C.). [0225] 7. Pre-emergence and post-emergence action against weeds under various cultivation conditions: Seeds of various broad-leaved weed and weed grass biotypes (origins) were sown in an 8-13 cm diameter pot filled with natural soil of a standard field soil (loamy silt) and covered with a covering soil layer of about 1 cm. Depending on the trial conditions, the soil of the standard field soil is sterile or not sterile. The pots were then cultivated 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 various BBCH stages 00-25 of the seeds/plants on a laboratory track sprayer with spray liquors comprising the mixtures/compositions according to the invention, mixtures or the components applied individually as WG, WP, EC or other formulations. The amount of water used for spray application was 100-600 l/ha. After the treatment, the plants were returned to the greenhouses and fertilized and watered as required. The pots were cultivated in a greenhouse (12-16 h light, temperature day 20-22° C., night 15-18° C.). Irrigation was varied according to the issue. Here, the individual comparative groups were provided with gradually differing amounts of water in a range from above the PWP (permanent wilting point) up to the level of maximum field capacity. [0226] 8. Pre-emergence and post-emergence action against weeds under various irrigation conditions: Seeds of various broad-leaved weed and weed grass biotypes (origins) were sown in an 8-13 cm diameter pot filled with natural soil of a standard field soil (loamy silt) and covered with a covering soil layer of about 1 cm. Depending on the trial conditions, the soil of the standard field soil is sterile or not sterile. The pots were then cultivated 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 various BBCH stages 00-25 of the seeds/plants on a laboratory track sprayer with spray liquors comprising the mixtures/compositions according to the invention, mixtures or the components applied individually as WG, WP, EC or other formulations. The amount of water used for spray application was 100-600 l/ha. After the treatment, the plants were returned to the greenhouses and fertilized and watered as required. The pots were cultivated in a greenhouse (12-16 h light, temperature day 20-22° C., night 15-18° C.). The individual comparative groups were subjected to different irrigation techniques. Irrigation was either from below or gradually from above (simulated rain). [0227] 9. Pre-emergence and post-emergence action against weeds under various soil conditions: seeds of various broad-leaved weed and weed grass biotypes (origins) were sown in an 8-13 cm diameter pot filled with natural soil and covered with a covering soil layer of about 1 cm. To compare the herbicidal action, the plants were cultivated in various cultivation soils from sandy soil to heavy clay soil and various contents of organic substance. Depending on the trial conditions, the cultivation soils are sterile or not sterile. The pots were then cultivated 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 various BBCH stages 00-25 of the seeds/plants on a laboratory track sprayer with spray liquors comprising the mixtures/compositions according to the invention, mixtures or the components applied individually as WG, WP, EC or other formulations. The amount of water used for spray application was 100-600 l/ha. After the treatment, the plants were returned to the greenhouses and fertilized and watered as required. The pots were cultivated in a greenhouse (12-16 h light, temperature day 20-22° C., night 15-18° C.). [0228] 10. Pre-emergence and post-emergence action against weeds for the control of resistant weed grass/broad-leaved weed species: seeds of various broad-leaved weed and weed grass biotypes (origins) having various resistance mechanisms against different modes of action were sown in an 8 cm diameter pot filled with natural soil of a standard field soil (loamy silt, LSI; pH 7.4; % C org 2.2) and covered with a covering soil layer of about 1 cm. Depending on the trial conditions, the soil of the standard field soil is sterile or not sterile. The pots were then cultivated in a greenhouse (12-16 h light, temperature day about 23° C., night about 15° C.) until the time of application. The pots were treated at various BBCH stages 00-25 of the seeds/plants on a laboratory track sprayer with spray liquors comprising the mixtures/compositions according to the invention, mixtures or the components applied individually as WG, WP, EC or other formulations. The amount of water used for spray application was 300 l/ha. After the treatment, the plants were returned to the greenhouses and fertilized and watered as required. The pots were cultivated in a greenhouse (12-16 h light, temperature day about 23° C., night about 15° C.). [0229] 11. Pre-emergence and post-emergence action against weeds and crop selectivity under various sowing conditions: seeds of various broad-leaved weed and weed grass biotypes (origins) and crop species (origins) were sown in an 8-13 cm diameter pot filled with natural soil and covered with a covering soil layer of about 0-5 cm. Depending on the trial conditions, the soil of the standard field soil is sterile or not sterile. The pots were then cultivated 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 various BBCH stages 00-25 of the seeds/plants on a laboratory track sprayer with spray liquors comprising the mixtures/compositions according to the invention, mixtures or the components applied individually as WG, WP, EC or other formulations. The amount of water used for spray application was 100-600 l/ha. After the treatment, the plants were returned to the greenhouses and fertilized and watered as required. The pots were cultivated in a greenhouse (12-16 h light, temperature day 20-22° C., night 15-18° C.). [0230] 12. Pre-emergence and post-emergence action against weeds at different pH values of the soil: seeds of various broad-leaved weed and weed grass biotypes (origins) were sown in an 8-13 cm diameter pot filled with natural soil and covered with a covering soil layer of about 1 cm. For comparison of the herbicidal activity, the plants were cultivated in cultivation soils of a standard field soil (loamy silt) with different pH values of pH 7.4 and pH 8.4. Accordingly, the soil was mixed with lime to achieve the higher pH value. Depending on the trial conditions, the soil of the standard field soil is sterile or not sterile. The pots were then cultivated 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 various BBCH stages 00-10 of the seeds/plants on a laboratory track sprayer with spray liquors comprising the mixtures/compositions according to the invention, mixtures or the components applied individually as WG, WP, EC or other formulations. The amount of water used for spray application was 100-600 l/ha. After the treatment, the plants were returned to the greenhouses and fertilized and watered as required. The pots were cultivated in a greenhouse (12-16 h light, temperature day 20-22° C., night 15-18° C.).
[0231] Outdoor Trials
[0232] In outdoor trials under natural conditions with the field being prepared in a manner customary in practice and with natural or artificial infestation with harmful plants, the compositions according to the invention, mixtures of the prior art or the individual components were applied before or after sowing of the crop plants or before or after emergence of the harmful plants, and visual scoring was carried out over a period of 4 weeks to 8 months after the treatment by comparison with untreated sections (plots). Here the damage to the crop plants and the action against harmful plants were recorded in percent, as were the other effects of the respective trial question.
[0233] b) Results
[0234] The results were obtained using the following method:
[0235] Pre-emergence action against weeds: Seeds of various broad-leaved weed and weed grass biotypes (origins) were sown in an 8 cm diameter pot filled with natural soil of a standard field soil (loamy silt; steamed) and covered with a covering soil layer of about 1 cm. The pots were then cultivated 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 00-06 of the seeds on a laboratory track sprayer with spray liquors comprising the mixtures/compositions according to the invention, mixtures or the components applied individually as WG, WP, EC or other formulations. The amount of water used for spray application was 300 l/ha. After the treatment, the plants were returned to the greenhouses and fertilized and watered as required.
[0236] The following abbreviations were used: [0237] BBCH=the BBCH code provides information about the morphological development stage of a plant. Officially, the abbreviation denotes the Biologische Bundesanstalt, Bundessortenamt and Chemische Industrie [Federal Biological Institute for Agriculture and Forestry, Federal Office for Crop Plant Varieties and Chemical Industry]. The range of BBCH 00-10 denotes the germination stages of the seeds until surface penetration. The range of BBCH 11-25 denotes the leaf development stages until stocking (corresponding to the number of tillers or side-shoots). [0238] PE=pre-emergence application on the soil; BBCH of the seeds/plants 00-10. [0239] PO=post-emergence application on the green parts of the plants; BBCH of the plants 11-25. [0240] HRAC=Herbicide Resistance Action Committee which classifies the approved active compounds according to their mode of action (MoA). [0241] HRAC group A=acetyl coenzyme A carboxylase inhibitors (MoA: ACCase). [0242] HRAC group B=acetolactate synthase inhibitors (MoA: ALS). [0243] AS=active substance (based on 100% of active ingredient; syn. a.i.). [0244] Dosage g of AS/ha=application rate in grams of active substance per hectare.
[0245] In the trials, the following biotypes of broad-leaved weeds and weed grasses were used: [0246] ALOMY—sensitive (Alopecurus myosuroides) sensitive to customary herbicidally active compounds. [0247] ALOMY—resistant (Alopecurus myosuroides) resistant to herbicidally active compounds of the HRAC groups A and B; population mixture of field origin having increased metabolic resistance (IMR) and some target site resistance (TSR). [0248] LOLRI—sensitive (Lolium rigidum) sensitive to customary herbicidally active compounds. [0249] LOLRI—resistant (Lolium rigidum) resistant to herbicidally active compounds of the HRAC groups A and B; population mixture of field origin having increased metabolic resistance (IMR) and some target site resistance (TSR). [0250] AVEFA (Avena fatua)—Wild oat [0251] BROST (Bromus sterilis)—Bromegrass, barren [0252] SORHA (Sorghum halepense)—Johnsongrass [0253] BRSNW (Brassica napus)—Rape, winter [0254] CENCY (Centaurea cyanus)—Cornflower [0255] EMEAU (Emex australis)—Cathead [0256] GALAP (Gallium aparine)—Cleaver [0257] PAPRH (Papaver rhoeas)—Poppy, common [0258] RAPRA (Raphanus raphanistrum)—Charlock, jointed [0259] VERHE (Veronica hederaefolia)—Speedwell, iveleaf [0260] HORVS (Hordeum vulgare)—Barley, spring [0261] TRZAS (Triticum aestivum)—Wheat, spring
[0262] The activities of the herbicidal compositions according to the invention meet the stated requirements and therefore solve the object of improving the application profile of the herbicidally active compound aclonifen (inter alia provision of more flexible solutions with regard to the application rates required for unchanged to enhanced activity).
[0263] Insofar as herbicidal effects of the compositions according to the invention compared to mixtures of the prior art or compared to components applied individually against economically important mono- and dicotyledonous harmful plants were the centre of attention, the synergistic herbicidal activities were calculated using Colby's formula (cf. S. R. Colby; Weeds 15 (1967), 20-22):