NO743390L - - Google Patents

Description

"Method of combat

of unwanted plants"

Pyridazones and thiol carbamates are known to have a herbicidal effect. However, their herbicidal effect is not always t i 1 s traction-freeT)

A method was found for combating unwanted plants, where, before sowing the cultivated plants, the soil in which the growth of the unwanted plants is to be prevented is treated with

a) a compound with the formula

where R means hydrogen or chlorine, and

b) the compound 1-phenyl-4-amino-5-chloro-pyridazone-(6)

and or

c) between the sowing of the cultivated plants and their emergence treat with the compound

l-phenyl-4-amino-5-chloro-pyridazone-(6)

and or

d) after the unwanted plants have emerged from the soil, this or the plants treat the Sed compound

1-phenyl-4-amino-5-chloro-pyridazone-(6),

whereby the unwanted plants are destroyed} while the useful plants grow without damage.

The amount used of the active ingredients can vary. The quantity used depends mainly on the species,

of the desired effect. The quantity is generally between 0.1 and 30 or more, preferably 0.2-6, kg of active substance per

hectares.

The application is, for example, in the form of directly sprayable solutions, powders, suspensions or dispersions, emulsions, oil dispersions, pastes, dusty agents, flow agents or granules, by spraying atomisation, spreading or pouring out. The forms of application depend entirely on the purpose of application; the aim is always to achieve the finest possible distribution of the active substances according to the invention.

For the production of directly sprayable solutions, emul-

. tions, pastes and oil dispersions, you can use mineral oil fractions with high boiling points, such as kerosene or diesel oil, further coal tar oils, etc., as well as oils of vegetable or animal origin, aliphatic, cyclic and aromatic hydrocarbons, such as benzene, toluene, xylene, paraffin, tetrahydronaphthalene, alkylated naphthalenes or derivatives thereof, for example methanol, ethanol, propanol, butanol, chloroform, carbon tetrachloride, cyclohexanol, cyclohexanone, chlorobenzene, isophorone, etc., strongly polar solvents such as, for example, dimethylformamide, dimethylsulfoxide, N-methylpyr(ilidone, water etc

Aqueous forms of use can be prepared from emulsion concentrates, pastes or wettable powders (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 using wetting, adhesive, dispersing or emulsifying agents. However, it is also possible to prepare concentrates consisting of active substance, wetting, adhesive, dispersing or emulsifying agent and any solvent or oil, which concentrates are suitable for diluting with water.

Surfactants include:

alkali, alkaline earth and ammonium salts of lignin sulfonic acid, naphthalene sulfonic acids, phenol sulfonic acids, alkylaryl sulfonates, alkyl sulfates, alkyl sulfonates, 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-octyl-phenol ether, ethoxylated isooctylphenol?, -octylphenol'-,j nonylphenol, alkylphenol polyglycol ether, tributylphenyl 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, lignin, sulphite liquors and methyl 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/of the active substances on solid carrier materials. Solid carrier materials are, for example, mineral materials such as silica gel, silicic acids, silica gels, silicates, talc, kaolin, attaclay, limestone, lime, chalk, bolus, loess, clay, dolomite, diatomaceous earth, calcium and magnesium sulphate, magnesium oxide, ground resins, fertilizers such as for example ammonium sulphate, 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 substance, preferably between 0.5 and 90% by weight.

Adhesives or wetting agents, oils of various types, herbicides, fungicides, nematocides, (insecticides, bactericides, trace elements, fertilisers, anti-foaming agents (for example silicones), growth regulators, 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 carbamoylalkyl thiols or dithiophosphates substituted conazoles

substituted cycloalkylamidocarboxylic acids and their salts,

esters and amides

substituted cycloalkylcarbonamidothiazoles

substituted dicarboxylic acids and their salts, esters and amides substituted dihydrobenzofuranyl sulphonates substituted disulphides

substituted dipyridylium salts

substituted"dithiocarbamates

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

substituted hexahydro-1-H-carbotiates substituted thiydantoins

substituted hydrazides

substituted hydrazonium salts substituted isoxazolepyrimidones substituted imidazoles

substituted isothiazolepyrimidones substituted ketones

substituted naphthoquinones

substituted aliphatic nitriles substituted aromatic nitriles substituted oxadiazoles

substituted oxadiazinones

substituted oxadiazolidinediones substituted oxadiazinediones substituted phenols and their salts|and esters substituted phosphonic acids and their salts, esters and amides substituted phosphonium chlorides substituted phosphonalkylglycines substituted phosphites

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

substituted pyrazoles

substituted pyrazolealkylcarboxylic 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 py r ife id i ne i

substituted pyrimidones

substituted pyrrolidine carboxylic acid^and its salts, esters

and amides

substituted pyrrolidines

substituted pyrrolidones

substituted arylsulfonic 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 tetrahydrothiadiazolediones

substituted aromatic thiocarboxylic acid amides

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

substituted/thioureas

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

substituted triazoles

substituted uracils

substituted uretidine diones.

The latter herbicidal compounds can, if desired, be used before or after the active single substances or mixtures according to the invention.

The addition of these agents to the herbicides according to the invention can take place in a weight ratio of 1:10 to 10:1. The same applies to oils, adhesives or wetting agents, fungicides, pnematocides, insecticides, bactericides, antidotes and growth regulators.

The agents have a strong herbicidal effect and can therefore be used as weed killers or to combat unwanted plant growth. Whether the agents act as total or selective agents mainly depends on the amount of active substance used per unit area.

By weeds or unwanted plant growth is meant here all monocotyledonous and dicotyledonous plants which grow in places where they are not wanted.

Thus, for example, the following plants can be combated:

Plants of the grass family, such as

Spinacia spp.

Solanaceae, e.g.

Solarium spp.

Nicotiania spp.

Linaceae, e.g.

Linum spp.

Liliaceae, e.g.

Allium spp.

Vitaceae, e.g.

Vitis vinifera

Bromeliaoeae, e.g.

Pineapple sativus.

Example 1

In a greenhouse, loamy sandy soil was filled in experimental boxes, and various seeds were sown. The treatment with the active substances I N,N-diisopropyl-thiolcarbamic acid-2,3-dichloroallyl ester

II N/N-diisOprrogyl-thiolcarbamic acid-2 , 3 , 3-trichloroallyl ester

III 1-phenyl-4-amino-5-chloro-pyridazone-(6)

IV 2-chloro-4,6-diethylamino-1,3,5-triazine

was carried out as follows:

A Treatment with the active substances I and II as an emulsion which

was incorporated before sowing;

B Treatment with the active substance III as dispersion after

the sowing of the cultivated plant;

C Treatment with the active substances I or II incorporated before sowing and further treatment with the active substance

substance III after sowing the cultivated plant and in comparison with treatment A with the active substance IV,

B. with the active substance III,

C with the active substance IV as treatment A + the active substance III as treatment -B.

From the following table, it will appear that treatment method c, with the use of the substances I and II together with III, in comparison with IV and III showed better compatibility with cultural

in '—r——i

the plants by the same herbicidal action.

The test result will appear in the following table.

Example 2

In a greenhouse, loamy sandy soil was filled in experimental boxes, and different seeds were sown. The treatment with the active substances

In N,N-diisopropyl-thiolcarbamic acid-2,3-dichloroallyl ester

II N,N-diisopropyl-thiocarbamic acid-2,3,3-trichloroallyl ester III 1-phenyl-4-amino-5-chloro-pyridazone-(6)

was carried out as follows:

A treatment with substances I and II incorporated before sowing;

B treatment with the substance III after sowing the cultivated plants; C treatment with the substances I or II incorporated before sowing and also treatment with the substance III after the sowing of the culture plant.

From the table below, it will appear that treatment method C compared to treatment methods A and B showed a better herbicidal effect with the same compatibility with the cultivated plants.

The test result will appear in the following table.

Example 3

In a greenhouse, clayey sandy soil was filled in experimental boxes, and different seeds were sown. The treatment with the active substances. , - ■■■

In N/Nr-diisopropyl-thiocarbamic acid-2, 3-dichloroallyl ester

II N,N-Diisopropyl-thiocarbamic acid-2,3,3-trichloroallyl ester

III 1-phenyl-4-amino-5-chloro-pyridazone-(6)

was made as a result<1>?!

A .• treatment with substances I and II incorporated before sowing;

B treatment with the substance or after the appearance of the weed plants;

C treatment with substances I or II incorporated before sowing and also treatment with substance III after the appearance of the weed plants.

It will be seen from the following table that treatment method C in comparison with treatment methods A and B showed a better herbicide effect with the same compatibility with the cultivated plants.

The test result will appear in the following table.

Example 4

In a greenhouse, loamy sandy soil was filled in experimental boxes, and different seeds were sown. The treatment with the active substances

In N,N-diisopropyl-thiolcarbamic acid-2,3-dichloroallyl ester

II N,N-diisopropyl-thiocarbamic acid-2,3,3-trichloroallyl ester III 1-phenyl-4-amino-5-chloro-pyridazone-(6)

IV 2-chloro-4,6-diethylamino-1,3,5-triazine

was carried out as follows:

A treatment with substances I and II incorporated before sowing;

B treatment with substance III after the emergence of the weed plants; C treatment with the substances I or II incorporated before sowing and also treatment with the substance III after the appearance of the weed plants;

in comparison with

treatment A with the active ingredient, substance IV

.. B ii .i i. •■ riI

" C " " " " IV as treatment A + substance III as treatment B.

From the table below, it will be seen that the treatment method C, with the use of the substance I and II together with III, in comparison with IV + III, showed a better compatibility with the cultivated plants due to the same herbicidal effect.

The test result will appear in the following table.

Example 5

In a greenhouse, loamy sandy soil was filled in supply boxes, and various seeds were sown. The treatment with the active substances

I N,N-di-isopropyl-thiolcarbamic acid—2,3-dichloroallyl ester

II N,N-di-isopropyl-thiocarbamic acid-2,3,3-trichloroallyl ester III 1-phenyl-4~amino-5-chloro-pyridazone-(6)

as emulsion or dispersion

was performed as f01ge!r7\

A treated with substances I and II, in each case 1 and 3

kg/ha active substance, III in amounts of 2 and 3 kg/ha active

material incorporated before sowing;

B treatment with substances I and II, in each case 1 kg/ha active substance incorporated before sowing, and also treatment with substance III in quantities of 2 kg/ha active [substance incorporated directly or shortly after the first treatment before sowing the cultivated plant.

It will be seen from the table below that, in comparison with treatment method A, treatment method B showed a better compatibility with the cultivated plants and a better herbicidal effect.

The test result will appear in the following table.

Example 6

In a greenhouse, clayey sandy soil was filled in experimental boxes, and different seeds were sown. The treatment with the active substances

In N,N-di-isopropyl-thiolcarbamic acid-2,3-dichloroallyl ester

II N,N-di~isopropyl-thiolcarbamic acid~2,3,3-trichloroallyl ester

III 1-phenyl-4-amino-5-chloro-pyridazone-(6)

as granules

was carried out as follows:

A treatment with substances I and II, in each case 1 and 3

kg/ha active substance incorporated before sowing;

B treatment with substance III in quantities of 2 d' 3 kg/ha active substance directly or up to a few days after treatment A

but before the sowing of the cultivated plants;

C treatment with substances I and II, in each case 1 kg/ha active substance incorporated before sowing and also treatment with substance III in an amount of 2 kg/ha active substance in accordance with B.

From the following table it will be seen that the treatment method

C in comparison with treatment methods A and B showed a better compatibility with the cultivated plants and a better herbicidal effect.

The test result will appear in the following table.

Example 7

In a greenhouse, loamy sandy soil was filled in experimental boxes, and different seeds were sown. The treatment with the active substances

In N,N-di-isopropyl-thiolcarbamic acid-2,3-dichloroallyl ester

II N,N-di-isopropyl-1-thiocarbamic acid-2, 3, 3-trichloroallyl ester III 1-phenyl-4-amino-5-chloro-pyridazone-(6)

as emulsion, dispersion or oil dispersion

was carried out as follows:

A treatment with substances I and II, in each case 1 and 3

kg/ha active spo. ff, and III in amounts of 2 and 3 kg/ha active

material incorporated before sowing;

B treatment with substances I and II, in each case 1 and 3

kg/ha of active substance, and III in amounts of 2 and 3 kg/ha of active substance directly or up to a few days after sowing the cultivated plants;

C treatment with substances I and II, in each case 1 kg/ha active substance incorporated before sowing and also treatment with substance III in amounts of 2 kg/ha active substance incorporated directly or up to a few days after sowing the cultivated plants.

From the table below, it will be seen that treatment method C, in comparison with treatment methods A and B, showed a better compatibility with the cultivated plants and a better herbicide effect.

The test result will appear in the following table.

Example 8

In a greenhouse, loamy sandy soil was filled in experimental boxes, and different seeds were sown. The treatment with the active substances

In N,N-di-isopropyl-thiolcarbamic acid-2,3-dichlorally ester

II N, N-^i-i]isopropyl-thiocarbamic acid—2, 3, 3-trichloroallyl ester

III 1-phenyl-4-amino-5-chloro-pyridazone-(6)

as emulsion or dispersion

was carried out as follows:

A treatment with substances I, II, III, in each case 1.5 and

3 kg/ha of active substance incorporated before sowing;

B treatment with substances I, II, III, in each case 1.5 and

3 kg/ha of active substance after the appearance of the weed plants until

the isolation of the cultivated plants;

C treatment with substances I and II, in each case 1.5 kg/ha active substance incorporated before sowing and also treatment with substance III in an amount of 1.5 kg/ha active substance after the appearance of the weed plants until the isolation of the cultivated plants.

From the table below, it will be seen that treatment method C compared to treatment methods A and B showed a better compatibility with the cultivated plants and a better herbicidal effect.

The test result will appear in the following table.

Example 9

In a greenhouse, loamy sandy soil was filled in experimental boxes, and different seeds were sown. The treatment with the active substances

In N/N-di-isopropyl-thiocarbamic acid-2/3-dichloroallyl ester

II N,N-di-isopropyl~thiolcarbamic acid-2, 3, 3-trichloroallyl ester

III 1-phenyl-4-amino-*5-chloro-pyridazone-(6)

as granules

was carried out as follows:

A treatment with substances I and II, in each case 1 and 3 kg/ha active substance, and substance III in amounts of 1.5 and 3 kg/ha

active substance incorporated before sowing the cultivated plants;

B treatment with substances I and II, in each case 1 and 3 kg/ha active substance, and substance III in amounts of 1.5 and 3 kg/ha active substance applied directly or up to a few days after the

r—■—r

first treatment, but before sowing the cultivated plants, incorporated or not incorporated. Treatment with 1 kg/ha active substance of I and II incorporated before sowing the culture plant j6g\ also with 1.5 kg/ha active substance of III applied directly or until a few days after the first treatment, but before sowing the culture plant, incorporated or not incorporated «C jtreatment with substances I and II, in each case 1 and 3

kg7ha active-sto f fi~ Jpg~ "stoffe t III in quantities of 1.5 and 3 kg/ha active substance used directly or until a few dalgeW after [the cutting of the cultivated plants, incorporated or not • incorporated.

D treatment with substances I and II, in each case - 1 kg/ha

active substance incorporated before sowing the cultivated plants and also with lQ> kg/ha active substance of substance III applied directly or up to a few days after the first treatment,

but before sowing the cultivated plants> incorporated or not incorporated, and also 1.5 kg/ha of active substance of III applied.

directly or up to a few days after sowing the cultivated plants, incorporated or not incorporated.

It will be seen from the table below that the treatment method D compared to the treatment methods A, B and C showed a better herbicidal effect with more favorable compatibility with the cultivated plants.

The test result will appear in the following table.

Example 10

In a greenhouse, loamy sandy soil was filled in experimental boxes, and different seeds were sown.' The treatment with the active substances I N,N-di-isopropyl-thiolcarbamic acid~2,3-dichloroallyl ester

II N,N-di-isopropyl-thiocarbamic acid-2,3,3-trichloroallyl ester III 1-phenyl-4-amino-5-chloro-pyridazone-(6)

as emulsion or dispersion

was carried out as follows:

A treatment with substances I, II and III, in each case 1 and 3

kg/ha of active substance incorporated before sowing the cultivated plants;

B treatment with substances I, II and III, in each case 1 kgi^ogj.

3 kg/ha of active substance used.directly or up to a few days

after the first treatment as well as before and after sowing the cultivated plants, incorporated or not incorporated. Treatment

with 1 kg/ha of active substance of I and II incorporated before sowing the culture plants and also with 1 kg/ha of active substance of III applied directly or up to a few days after sowing the culture-. the plants;

C treatment with the substances I, II and III, in each case 1 kgT3g 3. kg/ha of active substance during or after the appearance of the unwanted plants and during .til. after the appearance of the cultivated plants - until

.the insulation; D treatment with substances I and II, in each case 1 kg/ha active substance incorporated before sowing the cultivated plants and also with substance III in a quantity of 1 kg/ha active substance applied directly or up to a few days after the first treatment both before and after sowing the cultivated plants, incorporated or not incorporated, and in addition^ a treatment with >QTkg/ha active substance of III during or after the emergence of the unwanted plants and during the emergence of the cultivated plants until isolation.

Claims (1)

Method for combating unwanted plants, characterized by treating the soil before sowing the cultivated plants, in which the growth of the unwanted plants is to be prevented, meda) a compound with the formula where R means hydrogen or chlorine, and b) the compound and or c) immediately after the sowing of the cultivated plants until the emergence of the cultivated plants treat with the compound 1-phenyl-4-amino-5-chloro-pyridazone-(6) and/or d) after the unwanted plants have appeared, treat the soil or plants with the compound 1-phenyl-4-amino-5-chloro-pyridazone-(6).