초록 ▼

A liquid herbicidal composition is disclosed which retains its penetrating and systemic activity after application to susceptible flora under normal ambient conditions for a period of at least six hours by combining at least two different salts of at least one herbicidally active compound and a poly

A liquid herbicidal composition is disclosed which retains its penetrating and systemic activity after application to susceptible flora under normal ambient conditions for a period of at least six hours by combining at least two different salts of at least one herbicidally active compound and a polyhydric alcohol having 2 to 6 carbon atoms. The salts are preferably amine, ammonium or alkali metal salts of herbicidally active acid halogenated phenoxy acids. The herbicidal composition upon application to noxious vegetation has the unexpected property of retaining its phytotoxic activity throughout the maximum residence time necessary for effective weed and brush control by virtue of the fact that the composition resists crystallization and displays no tendency to either burn or otherwise damage the external cellular layers of the plant being treated.

대표청구항 ▼

An aqueous liquid herbicidal composition especially adapted for ultralow volume aircraft application while retaining the properties of extended penetrating and systemic activity consisting essentially of: a mixture consisting essentially of at least two different salts of at least one herbicidally a

An aqueous liquid herbicidal composition especially adapted for ultralow volume aircraft application while retaining the properties of extended penetrating and systemic activity consisting essentially of: a mixture consisting essentially of at least two different salts of at least one herbicidally active compound, said salts having a stable pH of no less than about 6, present in amounts providing from 10 to 90 parts by weight of one of said salts and from 10 to 90 parts by weight of a second different salt, and each being selected from the group consisting of methylamine, ethylamine, isopropylamine, monomethanolamine, monoethanolamine, monoisopropanolamine, dimethylamine, diethylamine, diisopropanolamine, dimethanolamine, diethanolamine, diisopropanolamine, trimethylamine, triethylamine, triisopropylamine, trimethanolamine, triethanolamine, triisopropanolamine, ammonium sodium, potassium, and lithium salts of herbicidally active acidic compounds selected from the group consisting of 2,4-dichlorophenoxyacetic acid, 2,4-dichlorophenoxypropionic acid, 2,4-dichlorophenoxybutyric acid, 2-methyl-4-chlorophenoxyacetic acid, 2-methyl-4-chlorophenoxypropionic acid, 2-methyl-4-chlorophenoxybutyric acid, 2,4,5-trichlorophenoxyacetic acid; a sufficient quantity of water to cause said mixture to be in liquid form; and a sufficient quantity of a polyhydric alcohol selected from the group consisting of polyhydric diols having from 2 to 6 carbon atoms and glycerine which is capable of causing the liquid herbicidal composition to remain noncrystalline as a viscous liquid concentrate and exhibit a pH of no less than about 6 under normal ambient conditions following application to susceptible flora for a period of at least six-hours. A method of controlling noxious vegetation comprising the steps of: applying to said vegetation by aircraft an effective amount of a liquid herbicidal composition, said composition consisting essentially of a mixture of at least two different salts of at least one herbicidally active compound, said salts having a stable pH of no less than about 6, present in amounts providing from 10 to 90 parts by weight of one of said salts and from 10 to 90 parts by weight of a second different salt, and each being selected from the group consisting of methylamine, ethylamine, isopropylamine, monomethanolamine, monoethanolamine, monoisopropanolamine, dimethylamine, diethylamine, diisopropanolamine, dimethanolamine, diethanolamine, diisopropanolamine, trimethylamine, triethylamine, triispropylamine, trimethanolamine, triethanolamine, triisopropanolamine, ammonium sodium, potassium, and lithium salts of herbicidally active acidic compounds selected from the group consisting of 2,4-dichlorophenoxyacetic acid, 2,4-dichlorophenoxypropionic acid, 2,4-dichlorophenoxybutyric acid, 2-methyl-4-chlorophenoxyacetic acid, 2-methyl-4-chlorophenoxybutyric acid, 2,4,5-trichlorophenoxyacetic acid; a sufficient quantity of water to cause said mixture to be in liquid form; and a sufficient quantity of a polyhydric alcohol selected from the group consisting of polyhydric diols having from 2 to 6 carbon atoms and glycerine which is capable of causing the liquid herbicidal composition to remain noncrystalline as a viscous liquid concentrate and exhibit a pH of no less than about 6 under normal ambient conditions following application to susceptible flora for a period of at least six hours.