Herbicidal and plant growth regulant compositions and their use

Details Herbicidal and plant growth regulant compositions and their use Herbicidal and plant growth regulant compositions and their use

A - Human Necessities

01

N

A01N 57/20 (2006.01)

Patent

CA 2250340

Glyphosate formulations which are effective even when employed at dosages below the dosage currently recommended for post-emergent herbicidal or plant growth regulant use are described. They are formulated as water solutions or as powders or granules of (a) one or more agriculturally acceptable amine, alkali metal, alkylsufonium, alkylphosphonium, sulfonylamine, and/or aminoguanidine salts of glyphosate as the only herbicide or plant growth regulant used in forming said composition; and (b) a trihydrocarbyl amine oxide surfactant as the only surface active component used in forming said composition. The amine oxide is (i) a single alkyl dimethyl amine oxide in which the alkyl group is a linear alkyl group having in the range of 10 to 14 carbon atoms, or (ii) a combination of two alkyl dimethyl amine oxides of (i), or (iii) a combination of at least one alkyl dimethyl amine oxide in which the alkyl group is a linear alkyl group having in the range of 10 to 14 carbon atoms and at least one dialkyl methyl amine oxide in which the alkyl groups are linear alkyl groups each having in the range of 8 to 12 carbon atoms. Optionally, one or more agriculturally acceptable substances none of which is a herbicide, or a plant growth regulant or a surfactant can be included in the formulation.

La présente invention décrit des formulations de glyphosate agissant efficacement, même aux doses inférieures recommandées pour les herbicides post-émergence et la régulation de croissance des plantes. Lesdites compositions ont été établies selon diverses formulations : solutions aqueuses, poudres ou granulés de (a) un ou plusieurs sels de glyphosate amine, métal alcalin, alkylsulfonium, alkylphosphonium, sulfonylamine et/ou aminoguanidine comme le ou les seuls herbicides ou phytorégulateurs de croissance entrant dans ladite composition et acceptables dans le domaine agricole ; et (b) un surfactant oxyde trihydrocarbyl aminé comme le seul composant de traitement de surface entrant dans ladite composition. L'oxyde aminé est (i) un oxyde aminé simple alkyl diméthyl aminé dans lequel le groupe alkyl est un groupe alkyl linéaire possédant une plage atomique de 10 à 14 atomes de carbone, ou (ii) une combinaison de deux oxydes aminés alkyl diméthyl aminés de (i), ou (iii) une combinaison d'un oxyde alkyl diméthyl aminé dans lequel le groupe alkyl est un groupe alkyl linéaire possédant une plage atomique de 10 à 14 atomes de carbone et/ou d'un oxyde dialkyl diméthyl aminé dans lequel les groupes alkyl sont des groupes alkyl linéaires possédant une plage atomique de 8 à 12 atomes de carbone. On peut, à titre de variante, inclure dans la formulation une ou plusieurs autres substances acceptables dans le domaine agricole mais ne pouvant constituer ni un herbicide ni un phytorégulateur de croissance ni un surfactant.

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