Synergistically acting herbicidal mixtures

A - Human Necessities – 01 – N

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A01N 43/90 (2006.01) C07D 487/04 (2006.01)

Patent

CA 2518759

A synergistic herbicidal mixture comprising A) [N-(5,7- Dimethoxy(1,2,4)triazolo[1,5-a]pyrimidin-2-yl)-2-methoxy-4-(trifluoro methyl)]- 3-pyridinesulfonamide (I) or one of its environmentally compatible salts; B) at least a synergistically effective amount of a herbicidal compound from the group of the p-hydroxyphenylpyruvat~dioxygenase (HPPD)-inhibitors; and, if desired, C) at least a safener selected from the group of dichlormid, benoxacor, LAB 145 138, MG-191, furilazole, cyometrinil, oxabetrinil, fluxofenim, flurazole, naphtalic acid anhydride, fenclorim, fenchlorazole, mefenpyr, isoxadifen, cloquintocet, 1-ethyl-4-hydroxy-3-(1 H-tetrazol-5-yl)-1 H-quinolin-2-one, 4-carboxy methyl-chroman-4~carboxylic acid, N-(2-methoxy- benzoyl)-4-(3-methylureido) benzenesulfonamide, (3-oxo-isothiochroman- 4~ylidenemethoxy)-acetic acid me thyl ester; or their environmentally compatible salts, amides, esters and hydrates. Compositions comprising these mixtures, processes for the preparation of these compositions and their use for controlling undesired plants.

L'invention concerne un mélange herbicide synergique constitué A) de [N-(5,7-diméthoxy(1,2,4)triazolo[1,5-a]pyrimidin-2-yl)-2-méthoxy-4-(trifluorométhyl)]-3-pyridinesulfonamide (I) ou d'un de ses sels compatibles avec l'environnement, B) d'au moins une quantité synergiquement efficace d'un composé herbicide du groupe des inhibiteurs de la dioxygénase du pyruvate de p-hydroxyphényle (HPPD) et, facultativement, C) d'au moins un phytoprotecteur sélectionné dans le groupe constitué par le dichlormid, le bénoxacor, LAB 145 138, MG-191, le furilazole, le cyométrinile, l'oxabétrinile, le fluxofenim, le flurazole, l'anhydride d'acide naphtalique, le fenclorim, le fenchlorazole, le mefenpyr, l'isoxadifène, le cloquintocet, la 1-éthyl-4-hydroxy-3-(1 H-tétrazol-5-yl)-1H-quinolin-2-one, l'acide 4-carboxy-méthyl-chroman-4-carboxylique, le N-(2-méthoxy-benzoyl)-4-(3-méthyluréido) benzènesulfonamide et l'ester méthylique d'acide (3-oxo-isothiochroman-4-ylidèneméthoxy)-acétique, ou de leurs sels, amides, esters et hydrates compatibles avec l'environnement. Ladite invention concerne également des compositions contenant ces mélanges, des procédés de préparation desdites compositions ainsi que leur utilisation dans la lutte contre des plantes non désirées.

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