MXPA01001640A - Herbicides for tolerant or resistant cereal cultures - Google Patents

Abstract

In order to control weeds in cereal cultures consisting of tolerant or resistant mutants or transgenic cereal plants, herbicide combinations (A)+(B), optionally in the presence of safeners, are particularly suitable, said combinations having an active content of:(A) herbicides exhibiting broad-spectrum effectiveness from group (A1) glufosinate(salts) and allied compounds;(A2) glyphosate(salts) and allied compounds such as sulfosate and (A3) imidazolinones such as imazethapyr, imazapyr, imazaquin, imazamox or the salts thereof, (A4) herbicidal azoles from the group protoporphyrinogen oxidase inhibitors (PPO inhibitors) and (B) one or moreherbicides from the group of compounds consisting of:(B0) one or more herbicides structurally different from the above-mentioned group (A) and/or (B1) herbicides which can be selectively used in cereals particularly against monocotyledonous weeds with an effect on the foliage and/or the soil (residual effect) and/or (B2) herbicides which can be selectively used in cereals against monocotyledonous and dicotyledonous weeds with an effect primarily on the foliage and/or (B3) herbicides which can be selectively used in cereals against monocotyledonous and dicotyledonous weeds with an effect on both the foliage and the soil and/or (B4) herbicides which can be selectively used in cereals against monocotyledonous and dicotyledonous weeds with an effect on the foliage, and the cereal cultures exhibiting tolerance in relation to herbicides (A) and (B), optionally in the presence of safeners, contained in said combination.

Description

HERBICIDAL COMPOSITIONS FOR TOLERANT OR RESISTANT CEREAL CROPS DESCRIPTIVE MEMORY The invention relates to the field of crop protection products that can be used against harmful plants in tolerant or resistant cereal crops, and which comprise, as herbicidally active substances, a combination of two or more herbicides. Hereinafter, the term cereal is used in a narrow sense and refers only to cereal crops of wheat, barley, rye, oats and corresponding specific variants such as triticale. The term in the present is not designed to include rice or corn. The introduction of tolerant or resistant cereal varieties and cereal lines, particularly the cereal varieties and transgenic cereal lines, adds new active substances that are not selective per se in conventional cereal varieties, to the conventional weed control system. The active substances are, for example, the known broad spectrum herbicides such as glyphosate, sulfosate, glufosinate, bialaphos and imidazolinone herbicides [herbicides (A)], which can now be used in the tolerant cultures developed specifically for them. The effectiveness of these herbicides against harmful plants in tolerant crops is high, but depends, in the same way as with other herbicide treatments, on the nature of the herbicide used, its rate of application, the preparation in question, the type of harmful plants which are going to be controlled, weather conditions, soil conditions, etc. In addition, herbicides have weak points (the zero effect) against specific species of harmful plants. Another criterion is the duration of its action, or the rate of degradation of the herbicide. Changes in the sensitivity of the harmful plants, which may occur with the prolonged use of herbicides or within a limited geographical area, should be taken into account. The loss of action against the individual plants can only be compensated to a certain degree by means of higher proportions of application of the herbicides, if possible. In addition, there is always a demand for methods to achieve the desired herbicidal effect with lower application rates of active substances. A lower application rate not only decreases the amount of an active substance that is required for application, but as a rule, also decreases the amount of the formulation auxiliaries required. Both advantages reduce the operating expenses and improve the ecological compatibility of the herbicide treatment. One possibility to improve the use profile of a herbicide may be to combine the active substance with one or more active substances that contribute to the desired additional properties. However, the combined use of a variety of active substances, leads It rarely causes physical and biological incompatibility phenomena to occur, for example the lack of stability of a co-formulation, the decomposition of an active substance or antagonism of the active substances. In contrast, what are desired are combinations of active substances with a favorable profile of action, with high stability and with a synergistic action as much as possible, which allows the application rate to be reduced in comparison with the individual application of the substances active that will be combined. Surprisingly, it has been found that the active substances from the group of broad spectrum herbicides (A) mentioned above in combination with other herbicides of group (A), and if appropriate, specific herbicides (B), interact in a special way and favorable when they are used in cereal crops that are suitable for the selective use of the herbicides that were mentioned at the beginning. Therefore, the invention relates to the use of combinations of herbicides to control harmful plants in cereal crops, in which the combination of herbicides in question has an active synergistic content of: (A) a broad-spectrum herbicide of the group of compounds consisting of: (A1) compounds of the formula (A1), wherein Z is a radical of formula -OH or a peptide radical of the formula -NHCH (CH3) CONHCH (CH3) COOH or NHCH (CH3) CONHCH [CH2CH (CH3) 2] COOH, and their esters and salts, preferably glufosinate and its salts with acids and bases, in particular glufosinate-ammonium, L-glufosinate or its salts, bialaphos and its salts with acids and bases, and other phosphinothricin derivatives, (A2) compounds of the formula (A2), and its esters and salts, Preferably glyphosate and its alkali metal salts or salts with amines, in particular glyphosate isopropylammonium, and sulfosates, (A3) imidazolinones, preferably imazetapyr, imazapyr, imazametabenz, mazametabenzo-methyl, imazaquin, imazamox, imazapic (AC 263,222) and its salts, and 20 (A4) herbicidal azoles of the protoporphyrinogen oxidase inhibitors (PPO inhibitors), such as WC9717 (= CGA276854), and (B) one or more herbicides from the group of compounds consisting of (BO) one or more structurally different herbicides from the group (A) mentioned above and / or 5 (B1) herbicides of foliar and / or soil action (action residual) that are selectively effective in cereals particularly against harmful monocotyledonous plants, and / or (B2) herbicides of predominantly foliar action that are selectively effective in cereals against harmful plants monocotyledonous and dicotyledonous, and / or (B3) herbicides of foliar and soil action that are selectively effective in cereals against dicotyledons and monocots and / or (B4) foliar-effect herbicides that are selectively effective in cereals against harmful monocotyledonous and dicotyledonous plants, and cereal crops they are tolerant to the herbicides (A) and (B) that form a constituent of the combination, if appropriate in the presence of protectants. "The structurally different herbicides of the group (A) 20 mentioned above" in the group (BO) only include herbicides which are included in the definition of the group (A), but which are not a component (A) in the combination in question.

In addition to the combinations of herbicides according to the invention, other active substances and adjuvants can be used. of crop protection, as well as formulation aids that are conventionally used in crop protection Synergistic effects are observed when active substances (A) and (B) are applied together, but can also be observed with dispersed application ( Another possibility is to apply the herbicides or combinations of herbicides in several portions (sequential application), for example after pre-emergence applications, followed by post-emergence applications or after early post-emergence applications, followed For medium or late post-emergence applications, the simultaneous application of active substances of the combination in question is preferred, if it is convenient in several portions. a stepwise application of the individual active substances of a combination and may be convenient in certain individual cases. Other crop protection agents such as fungicides, insecticides, acaricides and the like, and / or different applications of auxiliaries, adjuvants and / or fertilizers in this application system can also be integrated. The synergistic effects allow to reduce the application rates of the individual active substances, a more potent action against the same species of harmful plant combined with the same proportion of application, the control of species to which the action has not yet been extended (zero effect), an extended application period and / or a reduced number of individual applications required and -as a result for the user- weed control systems with greater economic and ecological advantage. For example, the combinations of (A) + (B) according to the invention allow for increased effects in terms of their synergy, which exceed by far and unexpectedly the effects that can be achieved with the individual active substances (A) and (B). WO-A-98/09525 has already described a method for controlling weeds in transgenic crops that are resistant to phosphorus-containing herbicides, such as glufosinate or glyphosate, which are combinations of herbicides that are employed and that comprise glufosinate or glyphosate and at least one herbicide from the group consisting of prosulfuron, primisulfuron, dicamba, pyridate, dimethenamid, metolachlor, flumeturon, propaquizafop, atrazine, clodinafop, norflurazone, ametryn, terbutylazine, simazine, prometryn, NOA-402989 (3-phenyl-4- hydroxy-6-chloropyridazine), a compound of formula wherein R = 4-chloro-2-fluoro-5- (methoxycarbonylmethyl) phenyl (which is disclosed in US-A-4671819), CGA276854 = 1-allyloxycarbonyl-1-methyl ethyl 2-chloro-5- (3-methyl-2,6-dioxo-4-trifluoromethyl-3,6-dihydro-2H-pyrimidin-1-yl) -benzoate (= WC9717, which is described in US-A-5183492) and 4-oxetanyl-2-. { N- [N- (4,6-dimethylpyrimidin-2-yl) aminocarbonyl] -amino-sulphonyl} benzoate (which is described in EP-A-496701). Details on the effects that can be obtained, or the effects that have been obtained, can not be found in the publication WO-A-98/09525. There are no examples of synergistic effects or the performance of the method in specific crops, nor are there specific combinations of two, three or more herbicides. DE-A-2856260 has already described a few combinations of herbicides with glufosinate or L-glufosinate and other herbicides such as alloxydim, linuron, MCPA, 2,4-D, dicamba, triclopyr, 2,4,5-T, MCPB and others. Some combinations of herbicides with glufosinate or glyphosate and other herbicides of the sulfonylurea series such as metsulfuron-methyl, nicosulfuron, primisulfuron, rimsulfuron and the like, have already been described in WO-A-92/08353 and EP-A 0 252 237. However, the use of combinations to control harmful plants has been shown in the publications only with reference to a few plant species or without reference to examples. In the experiments herein, it has surprisingly been found that there are large differences between the utility of the combinations of herbicides mentioned in WO-A-98/09525 and in the other references as well as in other combinations of novel herbicides in cultures of plants. According to the invention, combinations of herbicides are provided which can be used particularly advantageously in tolerant cereal crops. The compounds of formulas (A1) to (A4) are known or can be prepared analogously to known processes. Formula (A1) encompasses all stereoisomers and their mixtures, in particular the racemate and the particular enantiomer having a biological action, for example L-glufosinate and its salts. Examples of active substances of the formula (A1) are the following: (A1.1), glufosinate in the strict sense, ie DL-2-amino- [hydroxy- (methyl) phosphinyl] butanoic acid, (A1. 2), glufosinate-monoammonium salt, (A1.3) L-glufosinate, L- or (2S) -2-amino-4- [hydroxy (methyl) phosphinyl] butanoic acid (phosphinothricin), (A1.4) ) salt of L-glufosinate monoammonium, (A1.5) bialaphos (or bilanafos), ie L-2-amino-4- [hydroxy (methyl) phosphinyl] butanoyl-L-alan? L-alanine, in particular its salt of sodium. The aforementioned herbicides (A1.1) to (A1.5) are absorbed through the green parts of the plants and are known as broad-spectrum herbicides or total herbicides; are inhibitors of the enzyme glutamine synthetase in plants; see "The Pesticide Manual" 11a ? ?? e Jim ^^? JtoA ^ M? Vt * - .. *. *. ^ ^ g • • • • Edición Edición Edición Edición Edición Edición Edition, British Crop Protection Council 1997, pp. 643-645 and 120-121. Although post-emergence can be used to control broadleaf weeds as well as grass weeds in plantation crops and non-crop areas and, using specific application techniques, also for the treatment between rows of agricultural soil crops such as corn , cotton and the like, the importance of use as selective herbicides in crops of resistant transgenic plants is increasing. Glufosinate is generally used in the form of a salt, preferably of the ammonium salt. The glufosinate racemate, or glufosinate-ammonium, is applied only generally in proportions between 50 and 2000 g of sa / ha, normally 200 and 2000 g of sa / ha ((= g of sa / ha = grams of active substance per hectare At such proportions, glufosinate is effective mainly when it is absorbed through the green parts of the plants, however, because it degrades in microbial form in the soil in a few days, it has no long-term action in The same applies to the active substance related sodium bialaphos (also called bilanafos-sodium); see "The Pesticide Manual" 11th Edition, British Crop Protection Council 1997, p. 120-121. As a rule, a markedly less active substance (A1), for example, an application rate on the scale of 20 to 800, preferably 20 to 600 grams of glufosinate active substance per hectare (g of sa / ha og of i) ..a ../ ha) is required in the combinations according to the invention. Similar amounts, preferably quantities that J? I?? L? Ts? Han? Have been converted into moles per hectare, also apply to glufosinate-ammonium and bialaphos, or bialaphos-sodium. Combinations with foliar-acting herbicides (A1) are conveniently employed in cereal crops that are resistant or tolerant to the compounds (A1). Some tolerant cereal crops that have been genetically engineered are already known and used in practice; cf. the article in the publication "Zuckerrübe" [Beet], year 47 (1998), p. 217 ff .; for the generation of transgenic plants that are resistant to glufosinate, cf. EP-A-0242246, EP-A-242236, EP-A-257542, EP-A-275957 and EP-A-0513054. Examples of the compounds (A2) are (A2.1) glyphosate, ie N- (phosphonomethyl) glycine, (A2.2) glyphosate-monoisopropylammonium salt (A2.3) glyphosate-sodium salt (A2.4) sulfosate, ie N- (phosphonomethyl) glycine-trimesium salt = N- (phosphonomethyl) ) glycine-trimethylsulfoxonium salt Glyphosate is generally used in the form of a salt, preferably of the monoisopropylammonium salt or the trimethylsulfoxonium salt, (= trimesium salt = sulfosate). Based on glyphosate free acid, the single dose is in the range of 0.050-5 kg s.a./ha, normally 0.5-5 kg s.a./ha. Glyphosate is similar to glufosinate in relation to certain applications, but, in contrast to the latter, it is an inhibitor of the enzyme 5-enolpiruvilshikimat-3-phosphate synthase in plants; see "The Pesticide Manual" 11th Ed., British Crop Protection Council 1997 pp. 646-649. In the combinations according to the invention, proportions of application on the scale of 20 to 1000, preferably 20 to 800, g of s.a. are required as a rule and per hectare. of glyphosate. In addition, the tolerant plants generated by genetic engineering for the compounds (A2) are known and have already been introduced in practice; cf. "Zuckerrübe" year 47 (1998), p. 217 ff .; cf. also WO 92/00377, EP-A-115673 and EP-A-409815. Examples of midazolinone (A3) herbicides are (A3.1) imazapyr and its salts and esters, (A3.2) imazetapyr and its salts and esters, (A3.3) imazametabenzo and its salts and esters, (A3.4) imazametabenzo-methyl, (A3.5) mazamox and its salts and esters, (A3.6) imazaquin and its salts and esters, for example , the ammonium salt, (A3.7) imazapic (AC 263,222) and its salts and esters, for example, the ammonium salt. Herbicides inhibit the enzyme acetolactate synthase (ALS) and therefore the synthesis of proteins in plants; they are of action in soil as well as foliar action and in some cases, show selectivities in crops; cf. "The Pesticide Manual" 11th Ed., British Crop Protection Council 1997 pp. 697-699 for (A3.1), pp. 701-703 for (A3.2), pp. 694-696 for (A3.3) and ^^^^^^^^^^^ «^^^ (A3.4), pp. 696-697 for (A3.5), pp. 699-701 for (A3.6) and pp. 5 and 6, reported as AC 263,222 (for A3.7). The application rates of the herbicides are generally between 0.01 and 2 kg of s.a./ha, normally 0.1 and 2 kg of s.a./ha. In the combinations according to the invention, they are in the range of 10 to 800 g of s.a./ha, preferably 10 to 200 g of s.a./ha. Combinations with imidazolinone are conveniently employed in cereal crops that are resistant to imidazolinones. Such tolerant crops are already known. EP-A-0360750, for example, describes the generation of plants tolerant to the ALS inhibitor by selection methods or genetic engineering methods. The herbicide tolerance of the plants is generated by a high ALS content in the plants. US-A-5, 198,599 discloses sulphonylurea- and imidazolinone tolerant plants that have been obtained by screening methods. Examples of PPO (A4) inhibitors are: (A4.1) pyraflufen and its esters, such as pyflufen-ethyl, (A4.2) carfentrazone and its esters, such as carfentrazone-ethyl, (A4.3) oxadiargyl (A4 .4) sulfentrazone (A4.5) WC 9717 or CGA 276854 = 1-allyloxycarbonyl-1-methylethyl-2-chloro-5- (3-methyl-2,6-d-oxo-4-trifluoromethyl- 3,6-d? -hydro-2H-pyrimidin-1-yl) -benzoate (which is described in US-A-5183492).

The azoles mentioned above are known as inhibitors of the enzyme protoporphyrinogen oxidase (PPO); in plants; see "The Pesticide Manual" 11th Ed., British Crop Protection Council 1997 pp. 1048-1049 for (A4.1), pp. 191-193 for (A4.2), pp. 904-905 for (A4.3) and pp. 5 1126-1127 for (A4.4). The crops of tolerant plants have already been described. As a rule, the application rates of the azoles are in the range from 1 to 1000 g of s / ha, preferably from 2 to 800 g of s / ha, in particular the following application rates of the individual active substances: 10 ( A4.1) 1 to 100, preferably from 2 to 80 g of sa / ha (A4.2) 1 to 500 g of sa / ha, preferable of 5-400 g of sa / ha, (A4.3) 10 a 1000 g of sa / ha, preferably 20-800 g of s.aJha, (A4.4) 10 to 1000 g of sa / ha, preferable of 20-800 g of sa / ha, (A4.5) 10 a 1000 g of sa / ha, preferably 20-800 g of s.aJha. 15 Some plants that are tolerant to PPO inhibitors are already known. Examples of suitable components (B) are compounds of sub-groups (B0) to (B4) consisting of: (B0) one or more structurally different herbicides of group 20 (A) mentioned above and / or (B1) herbicides of action foliar and / or land action (residual action) that are selectively effective in cereal, particularly .dftfrif »a * - * - *» ** «'* j -_- ?. Ai» ^. friz • firS'M á k 5z & Í k ¿í & & amp; & amp; against harmful monocotyledonous plants, preferably in an amount of 50-8000, in particular 50-6000 g of sa / ha, such as (B1.1) foliar and soil-acting compounds, for example (B1.1.1) isoproturon ( PM, pp. 732-734) preferably in an amount of 250-5000, in particular 500-3000 g of sa / ha, (B1.1.2) chlortoluron, chlorotoluron (PM, pp. 229-231), preferably in an amount of 250-5000, in particular 500-3000 g of sa / ha, (B1.1.3) fluthiamid, fluthiamide (BAY FOE 5043) (MW, pp. 82-83), preferably in an amount of 50-3000, in particular 80-2000 g of sa / ha, (B1.1.4) prosulfocarb (PM, pp. 1039-1041), preferably in an amount of 100-5000, in particular of 500-600 g of sa / ha, and / or ( B1.1.5) pendimethalin (PM, pp. 937-939), preferably in an amount of 250-5000, in particular 500-1500 g of sa / ha, and / or (B1.2) compounds with predominantly foliar action, for example (B1.2.1) fenoxaprop-P (PM, pp. 519-520), preferably f enoxaprop-P-ethyl, also in the form of mixtures with the other optical isomers, for example in the form of the racemic mixture of fenoxaprop-ethyl, in particular the active substance in the presence of a protector such as fenchlorazole-ethyl or mefenpyr- diethyl, preferably in an amount of 20-300, in particular 30-200 g of sa / ha, f Z, (B1.2.2) clodinafop (MW, pp. 251-253) preferably clodinafop-propargyl in particular in the presence of a protector such as cloquintocet-mexyl, preferably in an amount of 10-150, in particular of 20-100 g of s.aJha, (B1.2.3) diclofop, preferably diclofop-methyl (MW, pp. 374-37), preferably in an amount of 100-3000, in particular 500-2000 g of sa / ha, (B1. 2.4) tralkoxydim (MW, pp. 1211-1212), preferably in an amount of 100-2000, in particular 150-1500 g of Sa / ha, and / or (B1.2.5) imazamethabenz (MW, pp. 694-696 ), preferably in an amount of 250-5000, in particular 500-3000 g of sa / ha, and / or, if appropriate, (B1.2.6) flupyrsulfuron and its salts and esters such as flupyrsulfuron-methyl-sodium (MW , pp. 586-588), preferably in an amount of 1-100, in particular 2-90 g of sa / ha, and / or (B2) predominantly foliar-acting herbicides that are selectively effective in cereal against harmful plants monocotyledons and dicotiled ions, preferably in an amount of 0.1-150, in particular 1 -120 g of s.aJha, for example (B2.1) metsulforon and its esters and salts, preferably metsulforon-methyl, (PM, pp. 842-844), preferably in an amount of 1-20, in particular 2-15 g of sa / ha, (B2.2) triasulfuron (MW, pp. 1222-1223), preferably in an amount of 2-90 in particular 5-80 g of sa / ha, (B2. 3) AEF060, ie methyl 4-methylsulfonylaminomethyl-2- (4,6-dir-ethoxy-pyrimidin-2-ylcarbamoylsulfamoyl) benzoate and analogous compounds, described in WO-A-95/10507, preferably in an amount of 1-30, in particular 2- 25 g of s.aJha, (B2 4) iodosulfuron (proposed common name) and preferably the methyl ester (see WO 96/41537) ie 4-iodo-2- (4-methoxy-6-methyl) acid. 1, 3,5-triazin-2-ylcarbomoyl-sulfamoyl) benzoic acid or methyl ester and its sodium salt, described in WO-A-92/13845, preferably in an amount of 0.1-50, in particular 1-30 g of s.aJha, (B2.5) Clorsulfuron (MW, pp. 293-240), preferably in a quantity of 2-90 c, in particular of 10-120 g of s.aJha and / or (B2 .6) sulfosulfuron (MON 37500) (MW, pp. 1130-1131), preferably in an amount of 5-150, in particular 10-120 g of sa / ha, and / or (B3) foliar-acting herbicides and of earth that are selectively effective in cereal against dicotyledonous and monocotyledonous, mainly against dicotyledons, preferably in an amount of 10-500p, in particular 15-300 g of s.aJha, for example (B3.1) diflufenican (PM, pp. 397-399) / flurtamone (PM, pp. 602-603), preferably in an amount of 10-500, in particular of 15-300 g of sa / ha, (B3.2) metosulam (PM, pp. 836- 838) and / or (B3.3) flumetsulam (PM, pp. 573-574) and / or (B4) herbicides of mainly foliar action that are selectively effective in cereal against harmful monocotyledonous and dicotyledonous plants, mainly against harmful plants dicotyledonous, preferably in an amount of 250-5000, in particular 500-3000 g of sa / ha, for example (B4.1) of the group consisting of the acetolactate synthase inhibitors, preferably in an amount of 1-250, in 5-150 g of sa / ha, such as (B4.1.1) tribenuron and its esters, in particular the methyl ester (MW, pp. 1230-1232), preferably in an amount of 2-80, in particular -60 g of sa / ha, (B4.1.2) amidosulfuron (MW, pp. 37-38), preferably in an amount of 2-120, in particular 5-90 g of sa / ha, (B4.1.3) LAB271272 , (= tritosulfuron, CAS Reg. No. 142469-14-5; see AG Chem New Compound Review, Vol. 17, 1999, p. 24, published by Agranova), ie, N - [[[4-methoxy-6- (trifluoromethyl) -1,5,5-triazin-2-yl) aminojcarbonyl] -2- (trifluoromethyl) -benzolsulfonamide) , preferably in an amount of 2-250, in particular 10-150 g of sa / ha, t¿ ^ -; jÉ & ^ k ^ ^ ^, ^., i ^ i. ^ (B4.2.5) fluroxypyr (PM, pp. 597-600) and its salts and esters, preferably in an amount of 10-300, in particular 50-200 g of sa / ha, (B4.2.6) dicamba (PM , pp. 260-263) and its salts and esters, preferably in an amount of 10-300, in particular 50-200 g of sa / ha, (B4.2.7) picloram (PM, pp. 977-979) and its salts and esters, preferably in an amount of 10-3000, in particular 50-200 g of sa / ha, (B4.2.8) bentazone (MW, pp. 109-111), preferably in an amount of 100-5000 , in particular 500-3000 g of s.aJha, and / or (B4.2.9) clopyralid and its salts and esters (MW, pp. 260-263), preferably in an amount of 10-2000, in particular 20 -1000 g of sa / ha, (B4.3) of the group consisting of hydroxybenzonitriles / photosynthesis inhibitors, preferably in an amount of 50-5000, in particular of 60-3000 g of sa / ha, for example (B4. 3.1) bromoxynil (PM, pp. 159-161) and its salts and esters, preferably in an amount of 50-1000, in particular r of 150-800 g of s.a./ha, (B4.3.2) ioxynil (PM, pp. 718-721) and its salts and esters, preferably in an amount of 50-1000, in particular 150-800 g of s.a./ha, (B4.3.3) bifenox (MW, pp. 116-117), preferably in an amount of 100-5000, in particular 500-3000 g of sa / ha, and / or (B4.3.4) metribuzin (PM, pp .840-841), preferably in an amount of 50-3000, in particular of 60-2000 g of sa / ha, and / or (B4.4) of the group of PPO inhibitors, preferably in an amount of 1- 150, in particular 2-120 g of s.aJha, for example (B4.4.1) carfentrazone (PM, pp. 191-193), preferably in an amount of 5-150, in particular 10-120 g of sa / ha, (B4.4.2) pyraflufen, preferably pyraflufen-ethyl (ET 751) (MW, pp. 1048-1049), preferably in an amount of 1-60, in particular 2-50 g of sa / ha, and / or (B4.4.3) fluoroglycofen and its salts and esters, in particular the ethyl ester (MW, pp. 580-582), preferably in an amount of 1-60, in particular 2-50 g of s.aJha, and / or (B4.5) of the group of the HPPDO inhibitors, preferably in an amount of 1-5000, in particular of 2-3000 g of sa / ha, for example, (B4.5.1) picolinofen, ie N-4-fluorophenyl-6- (3-trifluoromethyl-phenoxy) -pyridine-2-carboxamide (AC 900001, see AG Chem New Compound Review Vol. 17 (1999), page 35), preferably in an amount of 1-90, in particular 2-80 g of sa / ha, (B4.5.2) aclonifen (PM, pp. 14-16), preferably in an amount of 10-5000, in of 20-3000 g of sa / ha, (B4.5.3) isoxaflutole (MW, pp. 737-739), preferably in an amount of 1-500, in particular of 5-300 g of sa / ha, (B4 .5.4) clomazone (PM, pp. 256-257), preferably in an amount of 50-5000, in particular 100-3000 g of sa / ha, and / or (B4.5.5) sulcotrione (PM, pp. 1124 -1125), preferably in an amount of 50-1000, in particular of 80-6000 g of sa / ha, and / or (B4.5.6) mesotrione, ie 2- (4-mesyl-2-nitrobenzoyl) - cyclohexane-1,3-dione (ZA1296, see Weed Science Society of America (WSSA) in WSSA Abstracts 1999, Vol. 39, page 65-66, Numbers 130-132), preferably in an amount of 1-500, in I left cular of 2-400 g of s.a./ha. In the case of active substances that are based on carboxylic acids or other active substances that form salts or esters, the specification of the herbicides by the common name of the acid is also generally designed to encompass salts and esters, preferably salts and commercially available esters, in particular, the currently commercial form of the active substance. The application rates of the herbicides (B) can vary greatly from herbicide to herbicide. The following proportions in g of sa / ha are empirical rules: Compound (B0): 5-2000 (compare information on the group of compounds (A)), Compound (B1): 10-8000, preferable 10-5000, Compound (B1.1): 50-8000, preferable 50-5000, in particular 80-5000, Compound (B1.2): 10-5000, preferably 10-3000, in particular 10-1500, Compound (B2): 1-500, preferable 1-150, in particular 2-120, Compound (B3): 1-500, preferable 1-100, in particular 15- 100, Compound (B4): 1-5000, preferable 1-2000 g, in particular 3- 2000, Compound (B4.1): 1-300, preferable 1-150, in particular 1-100, Compound (B4.2) ): 10-5000, preferably 20-3000, in particular 50-2000, Compound (B4.3): 50-5000, preferably 50-3000, in particular 50-2000, Compound (B4.4): 1-150, preferably 2-120, in particular 50-100, Compound (B4.5): 1-5000, preferably 2-3000, in particular 5-1500. The ratios of the compounds (A) and (B) can be deduced from of the above-mentioned application rates for the individual substances, for example, the following relationships are of particular interest: (A) :( B) on the scale of 2000: 1 to 1: 1000, preferably of 1000: 1 to 1: 200, in particular from 200: 1 to 1: 100, (A) :( B0) from 400: 1 to 1: 400, preferably from 200: 1 to 1: 200, (A1) :( B1) from 200: 1 to 1: 250, preferably from 200: 1 to 1: 100, (A1) :( B2) from 1500: 1 to 1: 250, preferably from 1000: 1 to 1: 150, in particular 200: 1 at 1: 100, (A1) :( B3) from 1500: 1 to 1:10, preferably from 200: 1 to 1: 5, (A1) :( B4) from 5000: 1 to 1: 250, preferably from 500 : 1 to 1: 6, (A2) :( B1) from 200: 1 to 1: 250, preferably from 200: 1 to 1: 100, (A2) :( B2) from 2000: 1 to 1:50, preferable from 2000: 1 to 1:20, in particular from 300: 1 to 1:10, (A2) :( B3) from 2000: 1 to 1:10, preferably from 300: 1 to 1: 5, (A2): (B4) from 5000: 1 to 1: 250, preferably from 500: 1 to 1: 150, in particular from 300: 1 to 1: 100, (A3) :( B1) from 2000: 1 to 1: 500, preferable from 500: 1 to 1: 100, (A3) :( B2) from 2000: 1 to 1:50, preferable from 400: 1 to 1:10, (A3) :( B3) from 2000: 1 to 1:15 , preferably 2000: 1 to 1:10, in particular of 400: 1 to 1: 5, (A3) :( B4) of 2000: 1 to 1: 300, preferably of 200: 1 to 1: 200, in particular of 100: 1 to 1: 100, (A4) :( B1) from 80: 1 to 1: 500, preferably from 20: 1 to 1: 500, in particular from 10: 1 to 1: 200, (A4) :( B2) from 800: 1 to 1: 100, preferably from 200: 1 to 1: 100, in particular 50: 1 at 1:10, (A4) :( B3) from 800: 1 to 1:80, preferably from 200: 1 to 1:20, in particular from 100: 1 to 1:10, V Xtá? T A ú ^ * - * (A4) :( B4) from 800: 1 to 1: 250, preferably from 200: 1 to 1: 60, in particular from 100: 1 to 1: 50. In individual cases, it may make sense to combine one or more of the compounds (A) with more than one compound (B), preferably from classes (B1), (B2), (B3) and (B4). Moreover, the combinations according to the invention can be used together with other active substances, for example from the group of protectants, fungicides, insecticides and plant growth regulators, or from the group of additives and formulation auxiliaries which are used in conventional way in crop protection. The additives are, for example, fertilizers and colors. The combinations of herbicides of one or more compounds (A) with one or more compounds of group (B1) or (B2) or (B3) are preferred. Also preferred are combinations of one or more compounds (A), for example (A1.2) + (A2.2), preferably of a compound (A), with one or more compounds (B) as shown in the scheme : (A) + (B1) + (B2), (A) + (B1) + (B3), (A) + (B1) + (B4), (A) + (B2) + (B3), ( A) + (B2) + (B4), (A) + (B3) + (B4), (A) + (B1) + (B2) + (B3), (A) + (B1) + (B2) , + (B4), (A) + (B1) + (B3) + (B4), (A) + (B2) + (B3) + (B4). Combinations to which one or more other active substances of different structure [active substances (C)] are added are also in accordance with the invention, for example: imA? * lH ~? »?» Ji ?.

(A) + (B1) + (C), (A) + (B2) + (C), (A) + (B3) + (C) or (A) + (B4) + (C), (A ) + (B1) + (B2) + (C), (A) + (B1) + (B3) + (C), (A) + (B1) + (B4) + (C), (A) + (B2) + (B4) + (C) or (A) + (B3) + (B4) + (C). The preferred conditions illustrated in the present also apply to combinations of the type mentioned to the latter with three or more active substances, in particular to combinations of two forms according to the invention, mainly when they contain the combinations of two forms according to the invention. and with respect to the combinations of two relevant forms. The use of the following combinations is of particular interest: (A1.1) + (B1.1.1), (A1.1) + (B1.1.2), (A1.1) + (B1.1.3), (A1. 1) + (B1.1.4), (A1.1) + (B1.1.5), (A1.1) + (B1.2.1), (A1.1) + (B1.2.2), (A1.1) + (B1.2.3), (A1.1) + (B1.2.4), (A1.1) + (B1.2.5), (A1.1) + (B1.2.6), (A1.1) + ( B2.1), (A1.1) + (B2.2), (A1.1) + (B2.3), (A1.1) + (B2.4), (A1.1) + (B2.6), (A1.1) + (B3.1), (A1.1) + (B3.2), (A1.1) + (B3.3) (A1. 1) + (B4.1.1), (A1.1) + (B4.1.2), (A1.1) + (B4.1.3), (A1.1) + (B4.1.4), (A1.1) + (B4.1.5), (A1.1) + (B4.1.6), (A1.1) + (B4.2.1), (A1.1) + (B4.2.2), (A1.1) + ( B4.2.3), (A1.1) + (B4.2.4), (A1.1) + (B4.2.5), (A1.1) + (B4.2.6), (A1.1) + (B4.2.7), (A1.1) + (B4) .2.8), (A1.1) + (B4.2.9), (A1.1) + (B4.3.1), (A1.1) + (ß4.3.2), (A1.1) + (B4.3.3 ), (A1.1) + (B4.3.4), (A1.1) + (B4.4.1), (A1.1) + (B4.4.2), (A1.1) + (B4.4.3), (A1.1) + (B4.5.1), (A1.1) + (B4.5.2), (A1.1) + (B4.5.3), (A1.1) + (B4.5.4), (A1 .1) + (B4.5.5), (A1.2) + (B1.1.1), (A1.2) + (B1.1.2), (A1.2) + (B1.1.3), (A1.2) ) + (B1.1.4), (A1.2) + (B1.1.5), (A1.2) + (B1.2.1), (A1.2) + (B1.2.2), (A1.2) + (B1.2.3), (A1.2) + (B1.2.4), (A1.2) + (B1.2.5), (A1.2) + (B1.2.6), (A1.2) + (B2 .1), (A1.2) + (B2.2), (A1.2) + (B2.3), (A1.2) + (B2.4), (A1.2) + (B2.6), (A1.2) + (B3.1), (A1.2) + (B3.2), (A1.2) + (B3.3), (A1 .2) + (B4.1.1), (A1.2) + (B4.1.2), (A1.2) + (B4.1.3), (A1.2) + (B4.1.4), (A1.2) ) + (B4.1.5), (A1.2) + (B4.1.6), (A1.2) + (B4.2.1), (A1.2) + (B4.2.2), (A1.2) + (B4.2.3), (A1.2) + (B4.2.4), (A1.2) + (B4.2.5), (A1.2) + (B4.2.6), (A1.2) + (B4.2.7), (A1.2) + (B4) .2.8), (A1.2) + (B4.2.9), (A1.2) + (B4.3.1), (A1.2) + (B4.3.2), (A1.2) + (B4.3.3 ), (A1.2) + (B4.3.4), (A1.2) + (B4.4.1), (A1.2) + (B4.4.2), (A1.2) + (B4.4.3), Sarf ^ j? »(A1.2) + (B4.5.1), (A1.2) + (B4.5.2), (A1.2) + (B4.5.3), (A1.2) + (B4. 5.4), (A1.2) + (B4.5.5), (A2.2) + (B1.1.1), (A2.2) + (BU.2), (A2.2) + (B1.1.3) , (A2.2) + (B1.1.4), (A2.2) + (B1.1.5), 5 (A2.2) + (B1.2.1), (A2.2) + (B1.2.2), (A2.2) + (B1.2.3), (A2.2) + (B1.2.4), (A2.2) + (B1.2.5), (A2.2) + (B1.2.6), (A2.2) + (B2.1), (A2.2) + (B2 .2), (A2.2) + (B2.3), (A2.2) + (B2.4), (A2.2) + (B2.6), (A2.2) + (B3.1 ), (A2.2) + (B3.2), (A2.2) + (B3.3), 10 (A2.2) + (B4.1.1), (A2.2) + (B4.1.2) , (A2.2) + (B4.1.3), (A2.2) + (B4.1.4), (A2.2) + (B4.1.5), (A2.2) + (B4.1.6), (A2.2) + (B4.2.1), (A2.2) + (B4) .2.2), (A2.2) + (B4.2.3), (A2.2) + (B4.2.4), 15 (A2.2) + (B4.2.5), (A2.2) + (B4. 2.6), (A2.2) + (B4.2.7), (A2.2) + (B4.2.8), (A2.2) + (B4.2.9), (A2.2) + (B4.3.1), (A2.2) + (B4.3.2), (A2.2) + (B4) .3.3), (A2.2) + (B4.3.4), 20 (A2.2) + (B4.4.1), (A2.2) + (B4.4.2), (A2.2) + (B4. 4.3), (A2.2) + (B4.5.1), (A2.2) + (B4.5.2), (A2.2) + (B4.5.3), (A2.2) + (B4.5.4) , (A2.2) + (B4.5.5).

- ^? In the case of a combination of a compound (A) with one or more compounds (BO), this is, according to the definition, a combination of two or more compounds of the group A). Due to the broad-spectrum herbicides (A), the condition for such combination is that the transgenic or mutant plants show cross-resistance to several herbicides. Said cross-resistance in transgenic plants has already been described; compare WO-A-98/20144. Moreover, the combinations according to the invention can be used together with other active substances, for example from the group consisting of protectants, fungicides, insecticides and plant growth regulators or of the group of additives and formulation auxiliaries customary in protecting crops. The additives are, for example, fertilizers and dyes. For combinations of the type mentioned at last with three or more active substances, the preferred conditions explained below are also mainly applied, in particular for combinations of two forms according to the invention, if the combinations of two forms according to the invention are contained. in the same. Also of particular interest is the use according to the invention of the combinations with one more herbicides of group (A) preferably (A1.2) or (A2.2), in particular (A1.2), and with one or more herbicides, preferably a herbicide from the group consisting of: r- * 3 ** - .. ^^ ¡^^^^^^ (BO ') one or more structurally different herbicides of the group (A) mentioned above and / or (B1') herbicides of foliar and / or soil action which are selectively effective in cereals, particularly against harmful monocotyledonous plants (residual action) of the group consisting of isopoturon, chlorotoluron, flutiamide, prosulfocarb and / or pendimethalin, fenoxaprop-P, diclofop, tralkoxydim and flupirsulfuron or (B2 ' ) predominantly foliar-effect herbicides that are selectively effective in cereals against harmful monocotyledonous and dicotyledonous plants of the group consisting of AEF060 [4-methylsulfonylamino-2- (4,6-dimethoxy-pyrimidin-2-ylcarbamoylsulphamoyl) benzoate] ], iodosulfuron and sulfosulfuron or (B3 ') herbicides of foliar and soil action that are selectively effective in cereals against dicotyledons and monocots, of the group consisting of diflufenican / flurtamone, metosulam and flumetsulam or (B4') her foliar action bicidas that are selectively effective in cereal against harmful monocotyledonous and dicotyledonous plants, of the group consisting of: (B4.1 ') LAB271272 and cinidon-ethyl or (B4.2') herbicides of the hormone growth type a group consisting of fluroxypyr, picloram, bentazone and clopyralid or (B4.3 ') hydrobenzonitriles / photosynthesis inhibitors of the group consisting of bromoxynil, ioxinyl, bifenox and metribuzin or ffip ^ - * - ffff, - ^^ (B4.4 ') PPO inhibitors of the group consisting of pyraflufen and fluoroglycofen or (B4.5') HPPDO inhibitors from the group consisting of picolinofen, aclonifen, isoxaflutole, clomazone, sulcotrione and mesotrione or herbicides from several of the groups (BO) to (B4). The combinations of the particular component (A) with one or more herbicides of the group (B1 ') are preferred., (B2 '), (B3') or (B4 '). Also preferred are combinations of (A) + (B1 ') + (B2'), (A) + (B1 ') + (B3'), (A) + (B1 ') + (B4'), (A ) + (B2 ') + (B3'), (A) + (B2 ') + (B4') or (A) + (B3 ') + (B4'). Some of the combinations of herbicides to be used according to the invention are new, preferably those of the combinations (A) + (B '). The combinations according to the invention (= herbicidal compositions) have an outstanding herbicidal activity against a broad spectrum of economically important monocotyledonous and dicotyledonous harmful plants. The active substances also act efficiently on perennial weeds that produce shoots from rhizomes, roots or other perennial organs and which are difficult to control. In this context, it does not matter if the substances are applied before sowing, in pre-emergence or post-emergence. The application of post-emergence, or early application of post-sowing or pre-emergence is preferred.

Specifically, examples of some representative types of the monocotyledonous and dicotyledonous weed flora that can be controlled by the compounds according to the invention can be mentioned, without the enumeration being a restriction to certain species. Examples of weed species on which the herbicidal compositions act efficiently are, among the monocotyledons, Alopecorus spp., Avena spp., Setaria spp., Apera spica venti, Digitariaspp., Lolium spp., And Phalaris spp., But also Brachiaria spp., Panicum spp., Agropyron spp., forms of wild cereal Sorghum spp., Echinochloa spp., Cynodon spp., Poa spp., and Cyperus species and Imperata. In the case of dicotyledonous weed species, the spectrum of action extends to species such as, for example, Chenopodium spp., Matricaria spp., Amranthus spp., Ambrosia spp., Galium spp., Emex spp., Lamium spp. , Papaver spp., Solanum spp., Cirsium spp., Veronica spp., Abthemis spp., Lanium spp., Abutilon spp., Polygonum spp., Stellaria spp., Kochia spp., And Viola spp., But also Datura spp. ., Chrysanthemum spp., Thlaspi spp., Pharbitis spp., Ipomoea spp., Sida spp., Sinapis spp., Cupsella spp., Xanthium spp., Convolvulus spp., Rumex and Artemisia. If the compounds according to the invention are applied to the soil surface before germination, then the weed seedlings are completely prevented from arising, or the weed grows until it has reached the cotyledon stage but then its growth is stopped, Y, ^ gS¡ ^ j eventually, after three to four weeks have elapsed, they die completely. If the active substances are applied to the green parts of the plants in post-emergence, the growth is also stopped drastically shortly after the treatment and the weed plants remain in the growth stage of the application time point, or die completely after a certain time, in order to eliminate competition from the weeds, which is harmful to the crop plants, at a very early stage in terms of time, and in a sustained manner. In comparison with the individual preparations, the herbicidal compositions according to the invention are distinguished by their faster and longer onset herbicidal action. As a rule, the ability to resist watering of the active substances in the combinations according to the invention is advantageous. A particular advantage is that the doses of the compounds (A) and (B) which are used in the combinations and are effective, can be adjusted to such a low amount that their action in soil is optimal. This not only allows them to be used in sensitive crops in the first place, but also practically avoids the contamination of groundwater. The combination of active substance according to the invention makes it possible to considerably reduce the required application rate of the active substances.

When herbicides of type (A) + (B) are used together, super additive effects (= synergistic) are observed. This means that the effect on the combinations exceeds the expected total effects of the individually used herbicides. The synergistic effects allow a reduction of 5 the application rate, the control of a broader spectrum of broadleaf weeds and weeds, the herbicidal effect takes place more quickly, the duration of the action is greater, a better Control of harmful plants with only one or a few applications, and a possible extension of the application period. In some cases, the absorption of The compositions also reduce the amount of harmful constituents in the crop plant, such as nitrogen or oleic acid. The aforementioned properties and advantages are necessary under conditions of practical control of weeds to keep agricultural crops free of undesirable competing plants and thus ensure and / or increase yields. from the point of view of quality and quantity. These new combinations markedly exceed the prior art with respect to the properties described. Although the compounds according to the invention have an outstanding herbicidal activity against monocotyledonous weeds and dicotyledonous, tolerant, or cross-tolerant cereal plants, such as wheat, barley, rye, oats, and specific crops such as triticale, are only damaged to a lesser degree, or not at all. m? »n? i? i *? Furthermore, some of the compositions according to the invention have outstanding growth regulating properties on cereal plants. They are coupled into the metabolism of plants in a regulatory manner and can therefore be used to cause directed effects on plant constituents. Moreover, they are also suitable for the control and general inhibition of undesirable vegetative growth without simultaneously destroying the plants. An inhibition of vegetative growth is very important in a large number of monocotyledonous and dicotyledonous crops because the housing can be reduced in this way or completely avoided. Due to their herbicidal and plant growth regulating properties, the compositions can be used to control harmful plants in cereal crops that are known to be tolerant or cross-tolerant or in tolerant or genetically engineered cereal crops yet to be developed. As a rule, the transgenic plants are distinguished by particular, advantageous properties, in addition to resistance to the compositions according to the invention, for example, by resistance to plant diseases or pathogenic organisms of plant diseases, such as certain insects or microorganisms. as fungi, bacteria or viruses. Other particular properties refer, for example, to the material harvested in relation to the quantity, quality, storage capacity, composition and specific constituents. In this way, transgenic plants whose oil content is increased or whose quality is modified are known, for example in cases where the harvested material has a different fatty acid composition. Conventional methods for generating novel plants having modified properties compared to plants known to date comprise, for example, traditional methods of cultivation and the generation of mutants. Alternatively, novel plants having modified properties can be generated with the aid of genetic engineering methods (see for example EP-A-0221044, EP-A-0131624). For example, what is shown below has been described in several cases: - modification, by genetic engineering, of crop plants for the purpose of modifying the starch synthesized in the plant (for example WO 92/11376, WO 92/14827 , WO 91/19806), -transgenic culture plants that exhibit resistance to other herbicides, for example to sulfonylureas (EP-A-0257993, US-A-5013659), -transgenic plant cultures with the ability to produce toxins Bacillus tuhuringiensis (Bt toxins) that make plants resistant to certain pests (EP-A-0142924, EP-A-0193259), -transgenic plant cultures with a modified fatty acid composition (WO 91/13972). A large number of techniques in molecular biology that allow the generation of new transgenic plants with modified properties are known in principle; see for example, Sambrook et al, 1989, Molecular Cloning, A Laboratory Manual, 2nd edition. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY; or Winnacker "Gene und Klone" [Genes and Clones], VCH Weinheim, 2nd edition 1996, or Christou, "Trends in Plant Science" 1 (1996) 423-431. In order to carry out such genetic engineering manipulations, it is possible to introduce nucleic acid molecules into plasmids, which allows for mutagenesis or changes in the sequences that occurs by the recombination of the DNA sequences. For example, the standard procedures mentioned above allow basic changes to be carried out, remove partial sequences or add synthetic or natural sequences. To link the DNA fragments to one another, it is possible to add adapters or linkers to the fragments. For example, the generation of plant cells with reduced activity of a gene product can be achieved by the expression of at least one antisense RNA, a corresponding sense RNA, to achieve a cosuppression effect, or by expressing at least one ribosome appropriately constructed that specifically cuts transcripts of the aforementioned gene product. For this purpose, it is possible to use, on the one hand, DNA molecules comprising the entire coding sequence of a gene product including any flanking sequence that may be present, as well as DNA molecules comprising only portions of the coding sequence. , it being necessary for these portions to be long enough to have an antisense effect on the cells.

It is also possible to use DNA sequences which have a high degree of homology with the coding sequences of a gene product but which are not completely identical to them. When nucleic acid molecules are expressed in plants, the synthesized protein can be located in any desired compartment of the plant cell. However, to achieve location in a particular compartment it is possible, for example, to link the coding region with the DNA sequences, which ensures localization in a particular compartment. Such 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. Nati, Acad. Sci. USA 85 (1988), 846-850; Sonnewald et al, Plant J. 1 (1991), 95-106). The cells of transgenic plants can be regenerated by known techniques to give rise to whole plants. Transgenic plants can, in principle, be plants of any desired plant species, that is, not only monocotyledonous plants but also dicotyledonous plants. In this way, it is possible to obtain transgenic plants whose properties are altered by overexpression, suppression or inhibition of homologous genes (= natural) or gene sequences or by expression of heterologous genes (= external) or gene sequences. The invention therefore also refers to a method for controlling undesirable vegetation in tolerant cereal crops, which »* *" & * $ - comprises applying one or more herbicides of the type (A) and one or more herbicides of the type (B) to the harmful plants, parts of those plants or the growing area. to the new combinations of compounds (A) + (B) and to the herbicidal compositions containing them The combinations of the active substance according to the invention can exist not only as formulation mixtures of the two components, if appropriate together with other active substances, additives and / or traditional formulation auxiliaries, which are then applied in the customary manner after dilution in water, or prepared as so-called tank mixtures by joint dilution of the components formulated separately, or partially formulated separately, with water Compounds (A) and (B) or their combinations can be formulated in various ways, depending on the prevailing biological or physicochemical parameters. Below are examples of general possibilities for formulations: wettable powders (WP), emulsifiable concentrates (EC), aqueous solutions (SL), emulsions (EW) such as oil-in-water and water-in-oil emulsions, sprinkling solutions or emulsions, base dispersions of oil or water, suspended emulsions, powders (DP), seed protection materials, granules for application in soil or for broadcast sowing, or granules for dispersion in water (WG), ULV formulations, microcapsules or waxes. The types of individual formulations are known in principle and are described, for example in Winnacker-Küchler, "Chemische Technologie", Volume 7, C. Hauser Verlag Munich, 4th Edition 1986; van Valkenburg, "Pesticide Formulations", Marcel Dekker, N.Y., 1973; K. Martens, "Spray Drying Handbook", 3rd Edition, 1979, G. Goodwin Ltd. London. The required formulation aids, such as inert materials; Surfactants, solvents and other additives are also known and are described for example in Watkins, "Handbook of Insecticide Dust Diluents and Carriers", 2nd Edition, Darland Books, Caldwell N.J., H.v. Olphen, "Introduction to Clay Colloid Chemistry"; 2nd Edition, J. Wiley & Sons, N.Y .; Marsden, "Solvents Guide"; 2nd Edition, Interscience, N.Y. 1950; McCutcheon's "Detergents and Emulsifiers Annual", MC Publ. Corp., Ridgewood N.J .; Sisley and Wood, "Encyclopedia of Surface Active Agents", Chem. Publ. Co. Inc., N.Y. 1964; Schonfeldt, "Grenzfláchenaktive Áthylenoxidaddukte" [Surface-active ethylene oxide adducts], Wiss. Verlagsgesellschaft, Stuttgart 1976; Winnacker-Küchler, "Chemische Technologie", Volume 7, C. Hauser Verlag Munich, 4th Edition 1986. Based on these formulations, combinations with other active substances can also be prepared in a pesticidal manner, such as other herbicides, fungicides or insecticides, and with protectants, fertilizers and / or growth regulators, for example in the form of a ready mix or a tank mix. Wettable powders (sprayable powders) are products that are uniformly dispersible in water and which also comprise, in addition to the active substance, ionic or non-ionic surfactants (humectants, dispersants), for example polyethoxylated alkylphenols, polyethoxylated fatty alcohols or polyethoxylated fatty amines, alkanesulphonates or alkylbenzenesulfonates, sodium lignosulfonate, sodium 2,2'-dinaphthylmethane-6,6'-disulfonate, sodium dibutylnaphthalene sulfonate or also oleoylmethyltaurinate sodium, in addition to an inert material or a diluent. The emulsifiable concentrates are prepared by dissolving the active substance in an organic solvent, for example butanol, cyclohexanone, dimethylformamide, xylene or higher boiling aromatics or hydrocarbons with the addition of one or more ionic or nonionic surfactants (emulsifiers). Examples of emulsifiers that can be used are: calcium salts of alkylarylsulfonic acids, such as calcium dodecylbenzenesulfonate, or nonionic emulsifiers, such as fatty acid polyglycol esters, alkylaryl polyglycol ethers, fatty alcohol polyglycol ethers, propylene oxide condensation products. ethylene oxide, alkyl polyethers, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters or polyoxyethylene sorbitoi esters. The powders are obtained by grinding the active substance with finely divided solid materials, for example talc, natural clays such as kaolin, bentonite and pyrophyllite, or diatomaceous earth. The granules can be prepared either by spraying the active substance in granular, absorbent inert material or by applying concentrates of the active substance to the surface of vehicles such as sand, kaolites or granulated inert material, with the aid of binders, for example polyvinyl alcohol, sodium polyacrylate or mineral oils. Suitable active substances can also be granulated in the customary manner used to prepare fertilizer granules, if desired in a mixture with fertilizers. As a rule, water-dispersible granules are prepared by processes such as spray drying, fluidized bed granulation, disk granulation, mixing using high speed mixers, and extrusion without solid inert material. As a rule, the agrochemical preparations contain from 0.1 to 99% by weight, in particular from 2 to 95% by weight, of active substances type A and / or B, the following concentrations being the customary, depending on the type of formulation: Powder wettable, the concentration of the active substance is, for example, about 10 to 95% by weight, the rest at 100% by weight being formed by customary formulation constituents. In the case of emulsifiable concentrates, the concentration of active substance can be, for example, from 5 to 80% by weight. The formulations in the form of powders comprise, in most cases, from 5 to 20% by weight of active substance, the spray solutions approximately 0.2 to 25% by weight of active substance. In the case of granules, such as dispersible granules, the content of active substance depends in part on whether the active compound is present in liquid or solid form and of which granulation aids and - * £ $ ** íií "" i ^ Aíw *. fillers are used. As a rule, in the case of water-dispersible granules, the content is between 10 and 90% by weight. In addition, the aforementioned active substance formulations may comprise, if appropriate, adhesives, wetting agents, dispersants, emulsifiers, preservatives, antifreeze agents, solvents, fillers, colorants, vehicles, antifoams, evaporation inhibitors and pH regulators or regulators. of conventional viscosity. For example, it is known that the effect of glufosinate-ammonium (A1.2) and that of its L-enantiomer can be improved by surfactants, preferably by wetting agents of the alkyl polyglycol ether sulfate series containing, for example, to 18 carbon atoms and used in the form of its alkali metal salts or ammonium salts, but also as the magnesium salt, such as the diglycol ether fatty acid sodium C-? 2-C sulfate (© Genapol LRO, Hoechst); 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). In addition, it is known that polyglycol ether sulfates are also suitable as penetrants and synergists for a number of different herbicides, including also herbicides of the imidazolinone series; see EP-A-0502014. For use, the formulations, which are present in commercially available form, are optionally diluted in the usual manner, for example by using water in the case of wettable powders, emulsifiable concentrates, dispersions and granules dispersible in water. Preparations in the form of powders, granules for soil, granules for broadcast sowing and sprayable solutions in general are not further diluted with other inert substances before use. The active substances can be applied to plants, parts of plants, seeds of plants or the cultivated area (tilled land), preferably to green plants and parts of plants and, if appropriate, also to tilled land. One possible use is the joint application of the active substances in the form of tank mixes, the concentrated formulations of the individual active substances, in optimal formulations, they are mixed together with water in the tank, and the resulting spray mixture is applied. A joint herbicidal formulation of the combination according to the invention of the active substances (A) and (B) has the advantage that it can be applied more easily because the amounts of the components are already present in the correct proportion to each other. In addition, the auxiliaries in the formulation can optimally balance each other, while a tank mix of different formulations can lead to undesirable combinations of auxiliaries. m ** ^ As * ¡/ "A. Examples of general formulation a) A powder is obtained by mixing 10 parts by weight of a mixture of active substance / active substance and 90 parts by weight of talc as an inert material and spraying the mixture in a hammer mill. A wettable powder easily dispersible in water is obtained by mixing 25 parts by weight of a mixture of active substance / active substance, 64 parts by weight of quartz containing kaolin as an inert material, 10 parts by weight of potassium lignosulfonate and 1 part by weight. weight of sodium oleoylmethyltaurinate as a wetting and dispersing agent, and the mixture is ground in an articulated disc mill c) A dispersion concentrate that is readily dispersible in water is obtained by mixing 20 parts by weight of a mixture of active substance / substance active with 6 parts by weight of alkylphenol polyglycol ether (®Triton X 207), 3 parts by weight of isotridecanol polyglycol ether (8 EO) and 71 parts by weight of paraffin mineral oil sole (boiling scale of approximately 255 to 277 ° C) and the mixture is ground in a sphere mill until a fineness of less than 5 microns is obtained. d) An emulsifiable concentrate is obtained from 15 parts by weight of a mixture of active substance / active substance, 75 parts by weight of ciciohexanone as solvent and 10 parts by weight of ethoxylated nonylphenol as an emulsifier. e) Dispersible granules in water are obtained by mixing 75 parts by weight of a mixture of active substance / active substance, 10 parts by weight of calcium lingosulfonate, 5 parts by weight of sodium lauryl sulfate, 3 parts by weight of polyvinyl alcohol and 7 parts by weight of kaolin, the mixture is ground in an articulated disc mill and the powder is granulated in a fluidized bed spraying water on it as granulation liquid. F) Dispersible granules are also obtained in water by homogenizing and pre-pulsing, in a colloidal mill, 25 parts by weight of a mixture of active substance / active substance, 5 parts by weight of 2,2'-dinaphthylmethane-6,6'- sodium disulfonate, 2 parts by weight of sodium oleoylmethyltaurinate, 1 part by weight of polyvinyl alcohol, 17 parts by weight of calcium carbonate and 50 parts by weight of water, subsequently grinding the mixture in a sphere mill and atomizing and drying the resulting suspension in a spray tower by means of a model of a single substance.

BIOLOGICAL EXAMPLES 1. Pre-emergence effect in weeds Seeds or rhizome pieces of monocotyledonous and dicotyledonous weed plants are placed in sandy clay soil in 20 plastic pots and covered with soil. The compositions, which are formulated in the form of concentrated aqueous solutions, wettable powders or emulsion concentrates, are then applied to the surface of the soil layer in the form of an aqueous solution, suspension or emulsion. 1S% at an application rate of 600 to 800 I of water / ha (converted), in several dosifications. After the treatment, the pots are placed in a greenhouse and kept under good growing conditions for the weeds. After the plants have arisen, damage to the plants or the negative effect on emergence is recorded visually after a trial period of 3 to 4 weeks by comparison with controls without treatment. As the results of the tests show, the compositions according to the invention have good pre-emergence herbicidal activity against a broad spectrum of weed grasses and dicotyledonous weeds. It is often observed that the effects of the combinations according to the invention exceed the formal total of the effects by applying the herbicides individually (= synergistic effect). If the observed effects data already exceed the formal total of the experiment data with individual applications, then they also exceed the expected value of Colby, which is calculated by the formula below and which is also considered to suggest synergy (see SR Colby, in Weeds 15 (1967) pages 20 to 22); E = A + B- (A-B / 100) A, B denote the effect of the active substances A, or in%, for a or b g of s.a./ha; E denotes the expected value in% for a + b g of s.a./ha. = rfcariSS-8 »* In appropriately low dosages, the observed data of the experiments show an effect of the combinations above the expected Colby values. 2. Post-emergence effect on weeds Seeds or pieces of monocotyledonous and dicotyledonous weed rhizomes are placed in sandy clay soil in cardboard pots, covered with soil and grown in a greenhouse under good growing conditions. Three weeks after sowing, the test plants in the three-leaf stage are treated with the compositions according to the invention. The compositions according to the invention, which are formulated as wettable powders or as emulsion concentrates, are sprayed in several doses, on the green parts of the plants at an application rate of 600 to 800 I of water / ha (converted) . After the test plants have remained in the greenhouse for approximately three to four weeks under optimum growth conditions, the effect of the products is recorded visually by comparison with the controls without treatment. The compositions according to the invention also have a good herbicidal activity when applied post-emergence against a broad spectrum of economically important weed grasses and broadleaf weeds.

It is often observed that the effects of the combinations according to the invention exceed the formal total of the effects when the herbicides are applied individually. The observed data from the experiments, at suitably low doses, show an effect of the combinations above the expected Colby values (cf. the evaluation figures in Example 1). 3. Herbicide effect and tolerance for crop plants (field trials) Transgenic cereal plants with a resistance to one or more herbicides (A) were grown together with typical outdoor weed plants in 2 x 5 m plots, under environmental conditions natural alternatively, weed infestation occurred naturally when cereal plants were grown. The treatment with the compositions according to the invention was carried out under normal conditions, and as a control, separately only when applying the active substances of the components, with a field sprayer at an application rate of 200 to 300 liters of water per hectare in parallel tests, as can be observed in the scheme of Table 1, that is, prior to pre-emergence sowing, after sowing, pre-emergence or post-emergence in the early, middle or late stages.

TABLE 1 Examples of scheme of use The herbicidal activity of the active substances or mixtures of active substances was recorded visually at 2, 4, 6 and 8 weeks after application, with reference to the treated fields compared to the control fields without treatment. The damage to, and the development of, all the aerial parts of the plants. The record was made on the basis of a percentage scale (100% action = all plants destroyed, 50% action = 50% of the plants and Green parts of the plants destroyed, 0% action = no perceptible effect = equal to the control field The average of the values recorded in each case 4 fields was calculated The comparison showed that the herbicidal effect of the combinations according to the invention was normally higher, in some cases considerably higher, than the Total effects of individual herbicides (EA) In the essential periods of the evaluation period, the effects were greater than the expected Colby values (Ec) (see record in example 1) and therefore suggest a synergy. In contrast, corn plants were not damaged due to treatments with the herbicidal compositions or were only damaged to an insignificant degree Abbreviations used in general in the following adros: g of s.a./ha = gram of active substance (100% active substance) per hectare. EA = Total herbicidal effects of individual applications Ec = Expected Colby value (cf. evaluation in Table 1) TABLE 2 Abbreviations for table 2: 1) = application at the start of procurement 2) = evaluation 3 weeks after application. (A1.2) = glucosifonate-ammonium (B4.4.2) = pyraflufen-ethyl TABLE 3 Herbicidal effect in a field trial with cereal (wheat) Abbreviations for table 3: 1) = application at the start of procurement 2) = evaluation 11 days after application. & ai ¿-, -! -a 5 it? s. ugly (A1.2) = glufosinate-ammonium (B4.2.4) = MCPA The treated cereal shows no significant damage.

TABLE 4 Herbicidal effect in a field trial with cereal (wheat) Abbreviations for table 4: 1) = application in the 4-sheet stage 2) = evaluation 28 days after application. (A1.2) = glufosinate-ammonium (B4.3.1) = bromoxynil (B1.1.5) = pendimethalin (B2.1) = metsulfuron-methyl (B4.1.1) = tribenuron-methyl TABLE 5 Herbicidal effect in a field trial with cereal (wheat) Abbreviations for Table 5: 1) = application in the 4-leaf stage 2) = assessment 28 days after application 15 (A1.2) = glufosinate-ammonium (B4.4.1) = carfentrazone-ethyl (B4.1.6) = cinidon-ethyl (B4.1.2) = amidosulfuron 20 (B4.2.2) = cMPP (B4.2.5) = fluroxipir ? mlU * *? * A ** ± .i Se * & What & ^ * BÍ¡ &A ^ S ^ * _i * ^ - «« ß c TABLE 6 Effect herbicide in a field test with cereal (wheat)? Abbreviations for table 6: 1) = application in the 3-sheet stage 2) = evaluation 27 days after application. (A1.2) = glufosinate-ammonium (B1.2.3) = diclofop-methyl (B1.2.2) = clodinafop-propargyl (B1.2.6) = flupyrsulfuron (B3.2) = mizethapir (B3.1) = diflufenican ^ | 'Gi Ul ^ ß & ¿&A (B1.1.3) = Fluthiamide (flufenacet) (B1.1.1) = isoproturon (B2.3) = AEF60 (B2.6) = sulfosulfuron

Claims (9)

NOVELTY OF THE INVENTION CLAIMS

1. - The use of combinations of herbicides to control harmful plants in cereal crops, in which the combination of herbicides in question has an active synergistic content of: (A) a broad-spectrum herbicide of the group of compounds consisting of: (A1 ) compounds of the formula (A1), wherein Z is a radical of formula -OH or a peptide radical of the formula - 15 NHCH (CH3) CONHCH (CH3) COOH or NHCH (CH3) CONHCH [CH2CH (CH3) 2] COOH, and their esters and salts, and other phosphinothricin derivatives; (A2) compounds of the formula (A2), and their esters and salts, * ti (A3) midazolinones and their salts, and (A4) herbicidal azoles of the protoporphyrinogen oxidase inhibitors (PPO inhibitors), and the PPO inhibitor WC9717, and (B) one or more herbicides from the group consisting of the compounds (B1) herbicides of foliar action and / or action in soil (residual action) that are selectively effective in cereals particularly against harmful monocotyledonous plants of the group consisting of sopoturon, 5 chlorotoluron, flutiamide, prosulfocarb, pendimethalin, fenoxaprop-P , fenoxaprop, clodinafop, diclofop, tralkoxidim, mazamethabenz and flupirsulfuron; (B2) herbicides of predominantly foliar action that are selectively effective in cereals against harmful monocotyledonous and dicotyledonous plants, of the group consisting of metsulfuron, triasulfuron, AEF060 10 iodosulfuron, chlorsulfuron and sulfosulfuron or (B3) herbicides of foliar and soil action that are selectively effective in cereals against dicotyledons and monocotyledons of the group consisting of diflufenicam / flurtamone, metosulam and flumetsulam or (B4) herbicides of foliar action that are selectively effective in cereals against harmful monocotyledonous plants and 15 dicotyledons, of the group consisting of (B4.1) tribenuron, amidosulfuron, LAB271272 thifensulfuron prosulfuron and cinidon-ethyl and (B4.2) herbicides of the hormone growth type of the group consisting of 2,4-D, CMPP-P, dichlorprop, MCPA, fluroxipir, dicamba picloram, bentazone and clopiralid and (B4.3) hydrobenzonitriles / photosynthesis inhibitors of the group consisting of Bromoxinil, ioxinil, bifenox and metribuzin or (B4.4) PPO inhibitors of the group consisting of carfentrazone, pyraflufen and fluoroglycofen or (B4.5) f HPPDO inhibitors which are different from the active compound (A) optionally contained in each case, group consisting of picolinofen, aclonifen, isoxaflutole, ^^^^^ ^ sfi ^^^^^^? gj clomazohe, sulcotrione and mesotrione, and cereal crops are tolerant to the herbicides (A) and (B) contained in the combination, if appropriate in the presence of protectants, excluding the use of combinations of herbicides containing (a) the combination (B) methyl 4-methylsulfonylaminomethyl-2- (4,6- 5-dimethoxypyrimidin-2-ylcarbamoylsulfamoyl) benzoate (AEF060) and (A1) glufosinate 0 (A2) glyphosate or (A3) mazamethabenz or (A4) carfentrazone (ethyl) or (b) the combination (A4) carfentrazone-ethyl and isoproturon or tribenuron-methyl.

2. The use according to claim 1, further characterized in that glufosinate-ammonium is used as active substance (A).

3. The use according to claim 1, further characterized in that glyphosate-isopropylammonium is used as active substance (A).

4. The use according to any of the claims 1 to 3, further characterized in that the combination of herbicides comprises other active crop protection ingredients.

5. The use according to any of claims 1 to 4, further characterized in that the combination of herbicides comprises adjuvants and formulation aids that are conventionally used in crop protection.

6. A method for controlling harmful plants in tolerant cereal crops, which comprises applying the herbicides of the herbicide combination, as defined in one or more of claims 1 to 5, together or separately, pre -surgery, post-emergence or in pre and ^ jj ^^ - ^^^^^^^^ .-- .. •. * - - ^ 1 ^^^^ íH ±, ^ - "'post-srgigimiento to the plants, parts of plants, seeds of the plants or to the area in cultivation 7.- A herbicidal composition that comprises a combination of one or more herbicides (A), as defined in claim 1, 2 or 3, and one or more herbicides of the group consisting of: (B1 ') foliar action herbicides and / or soil action (residual action) which are effective selectively in cereals particularly against harmful monocotyledonous plants of the group consisting of isopoturon, chlorotoluron, flutiamide, prosulfocarb, pendimethalin, fenoxaprop-P, diclofop, tralkoxydim, and flupirsulfuron; (B2 ') herbicides of predominantly foliar action which are selectively effective in cereals against harmful monocotyledonous and dicotyledonous plants, from the group consisting of AEF060 iodosulfuron and sulfosulfuron, (B3 ') herbicides of foliar and soil action that are selectively effective in cereals against dicotyledons and monocoty of the group consisting of diflufenicam / flurtamone, metosulam and flumetsulam and (B4 ') foliar-effect herbicides that are selectively effective in cereals against harmful monocotyledonous and dicotyledonous plants, from the group consisting of (B4.1') LAB271272 and cinidon- ethyl, (B4.2 ') herbicides of the hormone growth type of the group consisting of fluroxypyr, picloram, bentazone and clopyralid, (B4.3') hydrobenzonitriles / photosynthesis inhibitors of the group consisting of bromoxynil, ioxinil, bifenox and metribuzin, (B4.4 ') PPO inhibitors of the group consisting of carfentrazone, pyraflufen and fluoroglycophon and (B4.5') inhibitors - ^^^^ ^^^ ZÍSS & HPPDO that are different from the active compound (A) contained optionally in each case, from the group consisting of picolinofen, aclonifen, isoxaflutole, clomazone, sulcotrione and mesotrione, and, if appropriate, usual additives in crop protection and formulation aids, excluding the herbicidal combinations (a) of (B) methyl 4-methylsulfonylaminomethyl-2- (4,6-dimethoxypyrimidin-2-ylcarbamoylsulphamoyl) benzoate (AEF060) and (A1) glufosinate or (A2) glyphosate or (A3) imazamethabenz or (A4) carfentrazone (ethyl) or (b) of (A4) carfentrazone-ethyl and isoproturon or tribenuron-methyl, (c) of (A4) carfentrazone (-ethyl) and (B) cinidon-ethyl. 8. The use of the composition defined in claim 7 for regulating the growth of tolerant cereal plants. 9. The use of the composition defined in claim 7 for influencing the performance of the constituents of tolerant cereal plants. t ~ i Efe? Jj SUMMARY OF THE INVENTION In order to control weeds in cereal crops consisting of tolerant cereal plants or resistant or transgenic mutants, combinations of herbicides (A) + (B) optionally in the presence of protectants, are particularly suitable, said combinations having an active content of (A) herbicides that exhibit a broad spectrum effectiveness of group (A1) glufosinate (salts) and related compounds, (A2) glyphosate (salts) and related compounds, such as sulfosate, and (A3) imidazolinones, such as imazethapyr, imazapyr, Mazaquin, mazamox or salts thereof, (A4) azole herbicides from the group of inhibitors of protoporfirinogen oxidase (PPO inhibitors), and (B) one or more herbicides from the group of compounds consisting of: (BO) one or more herbicides structurally different from the group (A) mentioned above, and / or (B1) herbicides that can be selectively used in cereals particularly against monocotyledonous weeds with an effect on the foliage and / or on soil (residual effect) and / or (B2) herbicides that can be used selectively in cereals against monocotyledonous and dicotyledonous weeds with an effect mainly in the foliage and / or (B3) herbicides that can be used selectively in cereals against dicotyledonous weeds and monocotyledons with an effect on both foliage and soil and / or (B4) herbicides that can be used selectively in cereals against dicotyledonous and monocotyledonous weeds with an effect on foliage t »v1ri AUrjasa-fe and the cereal crops exhibit tolerance with respect to the herbicides (A) and (B), optionally in the presence of protectants, contained in said combination.