Plant protecting and regulating compositions – Plant growth regulating compositions – Plural active ingredients
Reexamination Certificate
2003-03-05
2004-06-15
Clardy, S. Mark (Department: 1616)
Plant protecting and regulating compositions
Plant growth regulating compositions
Plural active ingredients
C504S132000, C504S134000, C504S135000
Reexamination Certificate
active
06750177
ABSTRACT:
DESCRIPTION
Herbicide combination with acylated aminophenylsulfonylureas
The invention is in the technical field of crop protection products which can be employed against harmful plants, for example in plant crops, and which comprise, as active ingredients, a combination of at least three herbicides.
The publications WO 95/29899 and WO 92/13845 disclose sulfonylureas and their salts and also their use as herbicides and/or plant growth regulators.
The efficacy of these herbicides against harmful plants in the plant crops is at a high level, but depends in general on the application rate, the formulation in question, the harmful plants or spectrum of harmful plants to be controlled in each case, the climatic conditions, the soil conditions and the like. Another criterion is the duration of action, or the breakdown rate of the herbicide. If appropriate, changes in the sensitivity of harmful plants, which may occur upon prolonged use of the herbicides or within geographic limitations must also be taken into consideration. The compensation of losses in action in the case of individual harmful plants by increasing the application rates of the herbicides is only possible to a certain degree, for example because such a procedure frequently reduces the selectivity of the herbicides or because the action is not improved, even when applying higher rates. In some cases, the selectivity in crops can be improved by adding safeners. In general, however, there remains a need for methods to achieve the herbicidal action with a lower application rate of active ingredients. Not only does a lower application rate reduce the amount of an active ingredient required for application, but, as a rule, it also reduces the amount of formulation auxiliaries required. It both reduces the economic input and improves the ecological compatibility of the herbicide treatment.
One possibility of improving the application profile of a herbicide can consist in combining the active ingredient with one or more other active ingredients. However, the combined use of a plurality of active ingredients does not infrequently cause phenomena of physical and biological incompatibility, for example a lack of stability in a coformulation, decomposition of an active ingredient, or antagonism of the active ingredients. Desired, in contrast, are combinations of active-ingredients with an advantageous activity profile, high stability and if possible a synergistically improved action, which allows reduction of the application rate in comparison with the individual application of the active ingredients to be combined.
Surprisingly, it has now been found that certain active ingredients from the group of the acylated aminophenylsulfonylureas in combination with certain structurally different herbicides act together in a particularly advantageous manner, for example when they are employed in plant crops which are suitable for the selective use of the herbicides, if appropriate with addition of safeners.
The invention therefore relates to herbicide combinations with an effective content of components (A), (B) and (C), where
(A) denotes one or more herbicides from the group of the compounds of the formula (I) or their salts,
(B) denotes one or more herbicides from the group of the compounds of the formula (II) or their salts,
and
(C) denotes one or more herbicides from the group of the compounds consisting of (referred to by the “common names” under the reference “The Pesticide Manual” 11th Ed., British Crop Protection Council 1997, abbreviated to “PM”)
(CI) herbicides which are selective in cereals and/or some dicotyledonous crops and act against monocotyledonous and -dicotyledonous harmful plants, which herbicides are selected from the group consisting of:
(C1) flumioxazin (PM, pp. 576-577), for example N-(7-fluoro-3,4-dihydro-3-oxo-4-prop-2-inyl-2H-1,4-benzoxazin-6-yl )cyclohex-1 -ene-1,2-dicarboxamide, (application rate: 10-500 g AS/ha, preferably 20-400 g AS/ha; application ratio (A+B)/C=1:25-50:1, preferably 1:10-20:1);
(C2) alachlor (PM, pp. 23-24), for example 2-chloro-N-(2,6-diethylphenyl)-N-(methoxymethyl)acetamide, (application rate: 100-5000 g AS/ha, preferably 300-4000 g AS/ha; application ratio (A+B)/C=1:500-3:1, preferably 1:250-1:1);
(C3) metolachlor (PM, pp.833-834), for example 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl)acetamide, (application rate: 100-5000 g AS/ha, preferably 300-4000 g AS/ha; application ratio (A+B)/C=1:500-3:1, preferably 1:250-1:1);
(C4) acetochlor (PM, pp. 10-12), for example 2-chloro-N-(ethoxymethyl)-N-(2-ethyl-6-methylphenyl)-acetamide, (application rate: 100-5000 g AS/ha, preferably 300-4000 g AS/ha; application ratio (A+B)/C=1:500-3:1, preferably 1:250-1:1);
(C5) dimethenamid (PM, pp. 409-410), for example 2-chloro-N-(2,4-dimethyl-3-thienyl)-N-(2-methoxy-1-methylethyl)acetamide, (application rate: 100-5000 g AS/ha, preferably 300-4000 g AS/ha; application ratio (A+B)/C=1:500-3:1, preferably 1:250-1:1);
(C6) pethoxamide (AG Chem, New Compound Review (publ. Agranova), Vol.17, 1999, p. 94, for example 2-chloro-N-(2-ethoxyethyl)-N-(2-methyl-1-phenyl-1-propenyl)acetamide, (application rate: 100-5000 g AS/ha, preferably 300-4000 g AS/ha; application ratio (A+B)/C=1:500-3:1, preferably 1:250-1:1);
(C7) atrazine (PM, pp. 55-57), for example N-ethyl-N-isopropyl-6-chloro-2,4-diamino-1,3,5-triazine, (application rate: 100-5000 g AS/ha, preferably 300-4000 g AS/ha; application ratio (A+B)/C=1:500-3:1, preferably 1:250-1:1);
(C8) simazine (PM, pp. 1106-1108), for example 6-chloro-N,N-diethyl-2,4-diamino-1,3,5-triazine (application rate: 100-5000 g AS/ha, preferably 300-4000 g AS/ha; application ratio (A+B)/C=1:500-3:1, preferably 1:250-1:1);
(C9) cyanazine (PM, pp. 280-283), for example 2-(4-chloro-6-ethylamino-1,3,5-triazin-2-ylamino)-2-methylpropionitrile, (application rate: 100-500 9 AS/ha, preferably 300-4000 g AS/ha; application ratio (A+B)/C=1:500-3:1, preferably 1:250-1:1);
(C10) terbuthylazine (PM, pp.1168-1170), for example N-ethyl-N-tert-butyl-6-chloro-2,4-diamino-1,3,5-triazine, (application rate: 100-5000 g AS/ha, preferably 300-4000 g AS/ha; application ratio (A+B)/C=1:500-3:1, preferably 1:250-1:1);
(C11) metribuzin (PM, pp. 840-841), for example 4-amino-6-tert-butyl-3-methylthio-1,2,4-triazin-5(4H)-one, (application rate: 10-3000 g AS/ha, preferably 20-2000 g AS/ha; application ratio (A+B)/C=1:300-25:1, preferably 1:100-10:1);
(C12) isoxaflutole (PM, pp. 737-739), for example (5-cyclopropyl-4-isoxazolyl)[2-(methylsulfonyl)-4-(trifluoromethyl)phenyl]methanone, (application rate: 10-3000 g AS/ha, preferably 20-2000 g AS/ha; application ratio (A+B)/C=1:300-25:1, preferably 1:100-10:1);
(C13) fluthiamid (=flufenacet=BAY FOE 5043) (PM, pp. 82-83), for example 4′-fluoro-N-isopropyl-2-(5-trifluoromethyl-1,3,4-thiadiazol-2-yloxy)acetanilide, (application rate: 10-3000 g AS/ha, preferably 20-2000 g AS/ha; application ratio (A+B)/C=1:300-25:1, preferably 1:100-10:1);
(C14) terbutryne (PM, pp.1170-1172), for example N-(1,1-dimethylethyl)-N-ethyl-6-(methylthio)-1,3,5-triazine-2,4-diamine, (application rate: 10-3000 g AS/ha, preferably 20-2000 g AS/ha; application ratio (A+B)/C=1:500-3:1, preferably 1:250-1:1);
(C15) nicosulfuron (PM, pp. 877-879), for example 2-(4,6-dimethoxypyrimidin-2-yl)-3-(3-dimethylcarbamoyl-2-pyridylsulfonyl)urea and its salts, (application rate: 1-120 g AS/ha, preferably 2-909 AS/ha; application ratio (A+B)C=1:12-240:1, preferably 1:5-100:1);
(C16) rimsulfuron (PM, pp. 1095-1097), for example 1-(4,6-dimethoxypyrimidin-2-yl)-3-(3-ethylsulfonyl-2-pyridylsulfonyl)urea and its salts, (application rate: 1-120 g AS/ha, preferably 2-90 g AS/ha; application ratio (A+B)/C=1:12-240:1, preferably 1:5-100:1);
(C17) primisulfuron, also comprising its esters, such as the methyl ester (PM, pp. 997-999), for example 2-[4,6-bis(difluoromethoxy)pyrimi
Bieringer Hermann
Hacker Erwin
Krähmer Hansjörg
Bayer CropScience GmbH
Clardy S. Mark
Connolly Bove & Lodge & Hutz LLP
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