NO750265L - - Google Patents

Description

"Herbicide mixture"

The present invention relates to a herbicide containing a mixture of active substances. It is known that benzothiadiazinone dioxides and substituted urea derivatives have a herbicidal effect. However, their herbicidal effect is not always satisfactory.

It was found that a mixture of

a) a compound with the formula

where means a lower alkyl residue, or their salts, and

b) a urea derivative from the group

N-3-chloro-4-isopropyl-phenyl-N * -methyl-N • -metc-oxyurea f

N-3-methyl-4-bromopheny1-N•-N•-dimethylurea N-[4-(4'-chlorophenoxy)-pheny1]-*»,• pl •-dimethylurea N-3-methyl-4- chlorophenyl-N'-N<*>-dimethylurea

N-[4-(4•-methoxy-phenoxy)-phenyl]-H',N'-dimethylurea

has a better herbal effect than the individual active substances.

The mixtures may contain one or more compounds with the formula a and compounds with the formula b.

The mixing ratios can be chosen as desired. The mixing ratio between the active substances a and b is 0.1 to 10 parts by weight

a per part by weight b, preferably 0.3-3 parts by weight a per weight part b.

The amount used of the agent according to the invention can vary. The amount used depends mainly on the nature of the desired effect. The amount is usually between 0.1 and 30

or more, preferably 0.2-6, kg of active substance per hectares. The agents according to the invention can, among other things, be used before planting, after planting, before sowing, before the plants emerge from the soil, after the plants have emerged from the soil or while the cultivated plants or the unwanted plants are about to emerge from the field, and the agents can used one or more times.

The mixtures are suitable for combating unwanted plants in useful plants, for example Triticum aestivum, Hordeum vulgare|i Secale cereale, zea mays, Sorghum spp., Glyeine max., Solanum tube-rosum, Pisum sativum.

Furthermore, the mixtures can be used as a total solution at graves, along rivers and streams, along railway tracks, on deserted surfaces, etc.

The application takes place, for example, in the form of directly sprayable solutions, powders, suspensions of different consistencies (for example, flowable suspensions) or dispersions, emulsions, oil dispersions, pastes, dusty agents, stream media, granules, by spraying, atomizing, spreading or spreading. The Anvendelees forms are completely adapted to the purpose of use" however, the aim is always to achieve the best possible distribution of the active substances.

In the production of directly sprayable solutions, emulsions, pastes and oil dispersions, you can use mineral oils, especially raks ions, with high boiling point agents, such as kerosene or diesel oil, as well as low-risk oils, etc., as well as oils of vegetable or animal origin, aliphatic, cyclic and aromatic hydrocarbons, for

for example benzene, toluene, xylene, paraffin, tetrahydronaphthalene, alkylated naphthalenes or their derivatives, for example methanol, ethanol, propanol, butanol, chloroform, carbon tetrachloride, cyclohexanol, cyclohexanone, chlorobenzene, isophorone etc., strongly polar solvent agents, such as dimethylformamide, dimethylsulphoxide, H-methyl-pyrrolidone, water etc. Aqueous forms of use can be prepared from emulsion concentrates, pastes or wettable powders (spray powders) or oil dispersions by adding water. When producing emulsions, pastes or oil dispersions, the substances as such or dissolved in oil or solvent can be homogenised in water by means of wetting, adhesive, dispersing or emulsifying agents. However, concentrates consisting of active substance, moisturizing,

adhesive, dispersing or emulsifying agent and any solvent or oil, which concentrates are suitable for diluting with water.

Among surfactants can be mentioned: alkali, alkaline earth, ammonium sites of ligninsulfonic acid, naphthalene sulfonic acids, phenolsulfonic acids, alkylarylsulfonates, alkyl sulfates, alkylsulfonates, alkali and alkaline earth salts of dibutyl naphthalene sulfonic acid, -lauryl ether sulfate, fatty alcohol sulfates, fatty acid alkali and alkaline earth salts, salts of sulfated hexadecanols, heptadecanols, octadecanols, salts of sulfated fatty alcohol glycol ether, condensation products of sulfonated naphthalene and naphthalene derivatives with formaldehyde, condensation products of naphthalene or naphthalene sulfonic acids with phenol and formaldehyde, polyoxyethylene octylphenol ether, ethoxylated iso-octylphenol, octylphenol, nonylphenol, alkylphenol polyglycol ether, tri-butylphenyl polyglycol ether, alkylaryl polyether alcohols, isotridecyl alcohol, fatty alcohol ethylene oxide condensates, ethoxylated castor oil, polyoxyethylene alkyl ether, ethoxylated polyoxypropylene, lauryl alcohol polyglycol ether acetal, sorbitol ester, equation, sulphite alcohols and methylc cellulose.

Powders, sprinkles and dust-like agents can be prepared by mixing or grinding together the active substances with a solid carrier material.

Granules, for example encasing, impregnation and homogenous granules, can be produced by binding the active substances to solid carrier materials. Solid carrier materials are, for example, mineral materials such as silica gel, silicic acids, silica gels, silicates, talc, kaolin, attack clay, limestone, lime, chalk, bolus, loess,

clay, dolomite, diatomaceous earth, calcium and magnesium sulfate, magnesium oxide, ground resins, fertilizers such as ammonium sulfate, ammonium phosphate, ammonium nitrate, urea and vegetable products, such as grain flour, bark, wood and nut shells, cellulose powder and other solid carrier materials.

The preparations contain between 0.1 and 95% by weight of active ingredients

substance, preferably between 0.5 and 90 wt%.

Oils of different types, herbicides, fungicides, nematocides, insecticides, bactericides, trace elements, fertilizers,

anti-foam agents, (for example silicones), growth regulators,

■ moe?

antidotes or other herbicidally active compounds, such as

substituted anilines

substituted aryloxycarboxylic acids and their salts, esters and amides

substituted ethers

substituted arsonic acids and their salts, esters and amides substituted benzimidazoles

substituted benzisothiazoles

substituted benzthiadiazine dioxides

substituted benzoxazines

substituted benzoxazinones

substituted benzthiadiazoles

substituted biurets

substituted quinolines

substituted carbamates

substituted aliphatic carboxylic acids and their salts, esters and amides

substituted aromatic carboxylic acids and their salts, esters

and amides

substituted carbaraoylalkyl thiols or dithiophosphates substituted quinazolines

substituted cycloalkylamidocarbonthiolic acids and their salts, esters and amides

substituted cycloalkylcarbonamidothiazoles

substituted dicarboxylic acids and their salts, esters and agarides substituted dihydrobenzofuranylsulfonates

substituted disulfides

substituted dlpyridylium salts

substituted dithiocarbamates

substituted dithiophosphoric acids and their salts, esters and amides substituted ureas

substituted hexahydro-1-H-carbothioates

substituted hydantoins

substituted hydrazides

substituted hydrazonium salts

substituted isoxazolepyrimidones

substituted imidazoles

substituted isothiazolepyrimidones

substituted ketones

substituted naphthoquinones

substituted aliphatic nitriles * substituted aromatic nitriles

substituted oxadiazoles

V • ■ ■

substituted oxadiazinons

substituted oxadiazolidinedones

substituted oxadiazinediones

substituted phenols and their salts, and esters substituted phosphonic acids and their salts, esters<p>g amides substituted phosphonium chlorides

substituted phosphonalkylglycines

substituted phosphites

substituted phosphoric acids and their salts, esters and amides substituted piperidines

substituted pyrazoles

substituted pyrazole alkylcarboxylic acids and their salts, esters and amides substituted pyrazolium salts

substituted pyrazolium alkyl sulfates

substituted pyridazines

substituted pyridazones substituted pyridine carboxylic acids and their salts, esters and amides

substituted pyridines

substituted pyridine carboxylates

substituted pyridinones

substituted pyrimidines

substituted pyrimidones substituted pyrrolidine carboxylic acid and its salts, esters and amides

substituted pyrrolidines substituted pyrrolidones

substituted aryl sulfonic acids and their salts, esters and amides substituted styrenes

substituted tetrahydro-oxadiazindiones

substituted tetrahydro-oxadiazolediones

substituted tetrahydromethanoindenes

substituted tetrahydrodiazole ions

substituted tetrahydro-thiadiazine ions

substituted tetrahydro-thiadiazolediones substituted aromatic thiocarboxylic acid amides

substituted thiocarboxylic acids and their salts, esters and amides substituted thiol carbamates

-substituted thioprines

substituted thiophosphoric acids and their salts, esters and amides substituted triazines

substituted triazoles

substituted uracils

substituted uretidine diones.

The latter herbicide© compounds can also be used before or after the individual active substances or mixtures according to the invention.

The addition of these agents to the herbal substances according to the invention can take place in a weight ratio of 10 to 10:1. The same applies to oils, fungicides, nematoclders, insecticides, bactericides, antidotes and growth regulators. The agents show a strong herbicidal effect and can therefore be used as weed killers or to combat unwanted plant growth. Whether the agents are used as total or selective agents mainly depends on the amount of active substance per surface unit.

By weeds or unwanted plant growth is meant all monocots

and dicots that grow in places where they are not wanted.

Thus, for example, the following plants can be combated with the agents according to the invention:

Plants of the grass family, such as

In greenhouses and on land, mixtures of the following compounds were tested against the above-mentioned plants:

and

N-3-chloro-4-isopropyl-phenyl-N•-methyl-N•-methoxyurea N-3-raethyl-4-bromophenyl-N•-N•-dimethylurea

N-[4-(4'-chlorophenoxy)-phenyl]-N',N<*>-dimethylurea N-3-methyl-4-chloropheny1-N•-N*-dimethylurea

N-[4-(4'-methoxy-phenoxy)-phenyl]-N',N<*->dimethylurea.„

The listed agents have a similar biological effect to the compounds in examples 1-3.

Example 1

In a greenhouse, different plants at a growth height of 5-22 cm were treated with the following single active substances and their mixtures as emulsion, dispersion

I 3-isopropyl-2,1,3-benzo-thiadiazinone-(4)-2,2-dioxide

II 3-isopropyl-2,1,3-benzothiadiazinone-(4)-2,2-dioxide sodium salt

III 3-isopropyl-2,1,3-benzo-thiadiaeinone-(4)-2,2-dioxide-dimethylamine salt

IV 3-isopropyl#2,1,3-benzo-thiadiazinone-(4)-2,2-dioxide-diethanolaminesaIt V N-S-chloro^-isopropyl-phenyl-N*-methyl-N'-methoxyurea f

in each case 0.25 - 0.5 - 0.75 and 1 kg/ha

I + V, II + V, III + V, IV + V, 1 each case 0.25 + 0.75» 0.75 + 0.25 and 0.5 + 0.5 kg/ha.

Example 2

In a greenhouse, different plants at a growth height of 5-22 cm were treated with the following single active substances and their mixtures as emulsion, dispersion

I 3-isopropyl-2,1,3-benzo-thiadiazinone-(4)-2,2-dioxide

II 3-isopropyl-2,1,3-benzo-thiadiazinone-(4)-2,2-dioxide sodium salt

III 3-isopropyl-2,1,3-benzo-thiadiazinone-(4)-2,2,-dioxide-dimethylamine salt

IV 3-isopropyl-2,1,3-benzo-thladiazinone-(4)-2,2-dioxide-diethanolamine salt

V N-3-chloro «*4-isopropyl-phenyl-N • -methyl-N • -methoxyurea in each case 1 - 1.5 - 2 and 3 kg/ha

I + V, II + V, III + V, IV + V, in each case 2 + 1* 1* + 2 and 1.5 + 1.5 kg/ha

and to the same equation ing

VI N-p-chlorophenyl-N'N• -dimethylurea

in each case 2 and 3 kg/ha

I + VI, II + VI in each case 1+2 kg/ha.

After 2-3 weeks it was established that the mixtures I + V,

II + V, III + V and IV + V showed a better compatibility with the cultivated plants at the same herbicidal effect than the substance VI and the mixtures I + VI and II + VI.

The test result will appear in the following table.

Example 3

X a greenhouse, different plants at a growth height of 4-20 cm were treated with the following active single substances and their mixtures as aqueous solution or dispersion as tank-mix

I 3-isopropyl-2,1,3-benzo-thiadiazinone-(4)-2,2-dioxide

II 3-isopropyl-2,1,3-benzo-thiadiazinone-(4)-2,2-dioxide sodium salt

III 3-isopropyl-2,1,3-benzo-thiadiazinone-(4)-2,2-dioxide diroethylamine salt

IV 3-isopropyl-2,1,3-benzo-thiadiazinone-(4)-2,2-dioxide-diethanolamine salt

V N-3-methyl-4-bromo-phenyl-N'N'-dimethylurea

VI N-3-methyl-4-chloro-phenyl-N,N' ^dimethylurea f

in each case 0.25 - 0.5 - 0.75 and 1 kg/ha

I + V, II + V, III + V, IV + V, I + VI, II + VI, III + VI,

IV + VI

in each case 0.25 + 0.75 and 0.75 + 0.25 and 0.5 + 0.5 kg/ha.

After 2-3 weeks, it was established that the mixtures showed a better herbicidal effect at the same compatibility with the cultivated plants than the active single substances.

The test result will appear in the following table.

Example 4

In a greenhouse, different plants at a growth height of 4-20 cm were treated with the following active substances and their mixtures as aqueous solutions

I 3-isopropyl-2,1,3-benzo-thiadiazinone-(4)-2,2-dioxide

II 3-isopropyl-2,1,3-benzo-thiadiazinone-(4)-2,2-dioxide sodium salt

III N-[4-(4'-chlorophenoxy)-phenyl]-4J<*>,N'-dimethylurea

in each case 1-1.5 -2 and 3 kg/ha of active substance.

I + III, II + III in each case 2 + lt 1+ 2 and 1.5 + 1.5 kg/ha active substance.

After 12-17 days, it was established that the mixtures showed a better herbicidal effect at the same compatibility with the cultivated plant than the active single substances.

The test result will appear in the following table.

Claims (2)

1. Herbicide, characterized in that it contains a mixture ava) a compound with the formula where R^ means a lower alkyl residue, or salts thereof, and b) a urea derivative from the group s N-3-chloro-4-isopropyl-phenyl-N'-methyl-N *-methoxyurea N-3-methyl-4-bromophenyl-N'-N'-dimethylurea N-[4-(4•-chlorophenoxy) -phenyl]-N•,N•-dimethylurea N-3-methyl-4-chlorophenyl-N'-N*-dimethylurea N-[4-(4'-raethoxy-phenoxy)-phenyl]-N*,N' -dimethylurea 2. Herbicide according to claim 1, characterized in that it contains a mixture of 3-isopropyl-2,1,3-benzothiadiazinone-(4)-2,2-dioxide-diethanolamine salt and N-3-chloro-4-isopropylphenyl- N'-methyl-N'-methoxyurea.